TLE8881-2-TN [INFINEON]
Alternator Control IC with LIN Interface;
| 型号： | TLE8881-2-TN |
| 厂家： | 
Infineon |
| 描述： | Alternator Control IC with LIN Interface |
| 文件： | 总116页 (文件大小：5601K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLE8881-2
Alternator Control IC with LIN Interface
Features
•
Single-chip alternator control IC
•
High-side n-channel DMOS output stage with RDSON of 60 mΩ typ. (at 25°C)
/ 110 mΩ max.
•
•
•
•
Excitation PWM duty cycle range from 0% up to 100%
Full digital and fast PI regulator
EEPROM for customization to the target application
Compliant to both communication standard specifications LIN 2.1 (on
physical layer and data link layer) and LIN 1.3 (on data link layer) with baudrate up to 19200 bit/s -
selectable via EEPROM
•
•
•
•
•
•
•
•
Compatible to several OEM specification variants
Digital temperature setpoint compensation
Excitation current limitation depending on LIN commands
Extensive voltage measurement range of 8 V up to 24 V
Very low stand-by current of less than 80 μA @ 25°C
High ESD resistivity of 8 kV on all lines (ESD HBM)
High temperature range of -40°C up to 175°C
Green product (RoHS-compliant)
Potential applications
•
Voltage regulator for externally excited alternator/generator machine
Product validation
Qualified for automotive applications. Product validation according to AEC-Q100.
Table 1
Type
Product Variants
Sales code
Package
Marking
n.a.
TLE8881-2-CH
TLE8881-2-TN
TLE8881-2-CH
TLE8881-2-TN
Bare Die
PG-TO-220-5-12 Straight Leads
TLE8881-2
Data Sheet
www.infineon.com
Rev. 1.00
2019-05-29
1
TLE8881-2
Alternator Control IC with LIN Interface
Description
The device is based on Infineon’s power technology SPT which allows bipolar and CMOS control circuitry to
be integrated with DMOS power devices on the same monolithic circuitry.
The battery voltage is regulated at a precise value between 10.6 V and 16 V. In case of communication loss, the
regulator is able to proceed with the voltage regulation by using adjustable default values. A fixed frequency
PWM voltage is set at an output pin to excite the excitation coil of the alternator.
The TLE8881-2 is equipped with special protection circuitry as well as circuitry to control the excitation
voltage slew rate to reduce EMI. Therefore the device meets the specific ESD and EMC requirement of the harsh
automotive environment.
The following main features are implemented:
Closed loop voltage control
By controlling the excitation PWM duty cycle of the excitation output stage, the TLE8881-2 regulates the
output voltage to an internal default voltage setpoint or to a voltage setpoint controlled by the engine
management or energy management ECU via the LIN interface. The regulation is processed in a full digital and
fast PI regulator.
Load Response Control (LRC)
The load response control (LRC) prevents engine speed hunting and vibration due to electrical loads which
cause abrupt torque loading of the engine at low speeds.
Self start detection
The TLE8881-2 automatically wakes up the state machine if the frequency and amplitude of the phase signal
is above a specific threshold. This allows the alternator to function in spite of interrupted or broken LIN
communication.
Pre-excitation
The excitation coil is pre-energized with a small fixed excitation PWM duty cycle coming from the excitation
output stage of the TLE8881-2 to provide a stable phase voltage input signal.
Phase Signal Boost (PSB)
The phase signal boost system of the TLE8881-2 maintains a proper phase signal for rotor speed
measurement.
Low Voltage Excitation Switch On (LEO)
At very low battery voltage loading is immediately induced by increasing the current in the excitation coil until
a minimal defined voltage is achieved.
High Voltage Excitation Switch Off (HEO)
At very high boardnet voltage, the excitation is immediately switched off in order to stop generating power.
Excitation current measurement
The measurement of the excitation current inside the rotor is used by the ECU to calculate and monitor the
torque on the engine.
Data Sheet
2
Rev.1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Excitation current limitation
The current limitation is used to set a boundary on the excitation current (meaning on the torque) via the LIN
interface.
Frequency-dependent Excitation Current Limitation (FEXLIM)
The current limitation is used to set a boundary on the current (meaning on the torque) and is dependent on
rotation speed.
Temperature measurement
The TLE8881-2 is able to send its own measured junction temperature to the ECU via the LIN interface.
Temperature setpoint compensation
The voltage setpoint is gradually compensated depending on the measured temperature.
Voltage measurement
The TLE8881-2 is able to send the measured voltage at VBA input via the LIN interface.
Speed measurement
The TLE8881-2 is able to send the measured rotor speed to the ECU via the LIN interface.
Speed-dependent Ki-Kp parameter sets (KiKp)
TLE8881-2 allows to use different regulation KiKp parameter sets for the regulation of the EXC duty cycle
dependent on the rotation speed nR of the alternator. The device provides 4 different but fixed KiKp parameter
sets which can be selected.
F-para switching
The PI controller’s parameter sets can be adjusted during operation. This function offers the possibility to
adjust the parameters depending on the pre-programmed parameter set and the activation via a LIN frame.
Voltage-dependent KiKp function (VoKiKp function)
In order to avoid a slow reaction of the IC on relatively high VBA voltages compared to VSET, especially if slow
KiKp parameter sets are chosen, the TLE8881-2 offers a voltage dependent KiKp function (VoKiKp).
Speed-dependent Lowering of the HEO limit (LowHEO function)
In order to optimize the reaction to high VBA voltages in case of a low rotation speed, the TLE8881-2 offers a
function to lower the HEO limit in order to assure a fast reaction to high VBA voltages.
LIN interface
In addition to the classical functions of voltage regulation, this regulator offers a bi-directional serial data
interface which is fully compliant to the standard specification LIN 2.1 (on the physical layer and the data link
layer) and LIN 1.3 (on the data link layer) for communication with the engine management or energy
management ECU. A dedicated EEPROM switch provides the possibility to change between LIN 1.3 or LIN 2.1
on the data link layer.
This communication link offers the following functions:
•
•
Control of the voltage setpoint as regulation input
Control of the LRC parameters
Data Sheet
3
Rev.1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
•
•
•
•
•
•
•
•
•
•
•
•
•
Control of the excitation current limitation
Control of what regulation loop parameter set is used for optimized behavior with and without battery
Control of the temperature voltage compensation offset
Different frame configurations for VDA-A, VDA-B, OEM1, OEM2
Transmission of the excitation PWM duty cycle value at excitation output stage to ECU
Transmission of the excitation current value (determined by excitation current measurement) to ECU
Transmission of the voltage at VBA (determined by voltage measurement) to ECU
Transmission of the chip junction temperature to ECU
Transmission of the rotation speed (using speed measurement) to ECU
Transmission of the alternator’s system supplier code to ECU
Transmission of the alternator’s class code to ECU
Transmission of the regulator identification code to ECU
Transmission of diagnosis (defects detection) to ECU: high temperature (F-HT), rotor failure (F-ROT),
electrical failure (F-EL, debounced)
•
Transmission of the LIN diagnosis: communication error failure (F-CEF), communication time-out (F-CTO)
Data Sheet
4
Rev.1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Table of Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2
Pin and pad configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1
Pin assignment for PG-TO-220-5-12 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3
General product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Reduced operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1
3.2
3.3
3.4
4
4.1
4.2
4.3
Main control block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
State diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Rotational speed events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LIN communication events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
State description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Feature priorities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
“Stand-by” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
State “ComActive” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
State “pre-excitation” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
State “normal operation” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
State “excitation off” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
State “default operation“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
State “overtemperature” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Diagnostic flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
High-temperature diagnostic flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Mechanical error flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Electrical error flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
4.4.7
4.4.8
4.5
4.5.1
4.5.2
4.5.3
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
Regulation functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Excitation output driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Excitation current measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Limitation of Excitation Current (CLIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Temperature measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Temperature Setpoint Compensation (TSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Voltage measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Speed measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Low Voltage Excitation On (LEO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
High Voltage Excitation Off (HEO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Phase Signal Boost (PSB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Load Response Control (LRC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Frequency-dependent Excitation Current Limitation (FEXLIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Parameters and limitation areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Function activation/deactivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
FEXLIM vs. RCLIM register value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Transition behaviors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Function characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Behavior with restore state function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.8
5.9
5.10
5.11
5.12
5.13
5.13.1
5.13.2
5.13.3
5.13.4
5.13.5
5.13.6
Data Sheet
5
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
5.14
5.15
5.16
5.17
Regulation parameters control via LIN (F-Para function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Speed-dependent KiKp parameter sets (KiKp function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Voltage-dependent KiKp function (VoKiKp function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Speed-dependent lowering of the HEO limit (LowHEO function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6
6.1
6.2
6.3
LIN interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Bus topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Signal specification (physical layer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Message frames (data link layer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
LIN frame structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
LIN frame identifier recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
LIN RX frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
LIN TX1 frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
LIN TX2 frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
LIN TX3 frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
LIN registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Register RVSET (voltage setpoint) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
RVSET reporting via LIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Registers LRC (load response control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Register RCLIM (excitation current limitation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Register RFPARA (F-Para function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Register RHT (adjustment of high temperature threshold) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Register RDI (response data indicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Register RDC (excitation PWM duty cycle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Register RMC (measured excitation current) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Register RMT (measured temperature on chip) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Register RMV (measured voltage at VBA terminal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Register RMS (measured speed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Register RSUPP and RCLASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Default register content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Register output filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Filter for excitation PWM duty cycle (RDC filter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Filter for voltage measurement (RMV Filter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Excitation current filter (RMC filter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
LIN 2.1 diagnostic frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Node configuration / identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
NAD, supplier ID, function ID and variant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Assign frame ID range (LIN 2.1 service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Read by identifier (LIN 2.1 service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Internal LIN timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.3.6
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.4.7
6.4.8
6.4.9
6.4.10
6.4.11
6.4.12
6.4.13
6.5
6.6
6.6.1
6.6.2
6.6.3
6.7
6.7.1
6.7.2
6.7.3
6.7.4
6.8
6.9
7
Phase monitoring block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Self-start wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Speed detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Phase monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.1
7.2
7.3
7.4
8
Core functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Data Sheet
6
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
8.1
8.2
8.3
8.4
8.5
8.5.1
8.5.2
Voltage reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Internal supply reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Charge pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Restore state function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Supply micro-cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Restore state event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
9
9.1
9.2
9.2.1
9.2.2
Non-Volatile Memory (NVM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
NVM characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
NVM register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
List overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Detailed description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
10
10.1
10.2
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
EMC and ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
11
12
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Data Sheet
7
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Block diagram
1
Block diagram
The Alternator Control IC TLE8881-2 has a communication line to the ECU (LIN), 2 external alternator lines
(VBA and GND) and 2 pins for the alternator-internal connections (EXC and PH). The device consists of several
blocks to provide relating functions.
The device consists of 6 main function blocks as shown in Figure 1.
Regulation Block
Current sense,
Temperature sense
Input filtering
ADC
VBA
Digital Block
Excitation Output Stage,
Free-wheeling Diode,
Over-Current Shut-Down,
Exc<1V detection, Slope
Control
ADC Control,
EXC
Voltage / Current / Temperature / Speed measurement,
Voltage Set-Point calculation,
Excitation Current Limitation,
PWM signal generation,
LEO, HEO, PSB, LRC ...
LIN Interface
Main Control
Register
LIN Protocol-Handler
GND
State control,
Voltage Setpoint, LRC configuration,
Excitation Current, Excitation
Frame receive,
Diagnosis,
error detection,
Programming Mode,
Speed Measurement
Current Limitation, EWMA Filter,
Diagnosis, Alternator Information
data response generation
Stator Monitoring
Core Functions
LIN Transceiver
LIN wake-up, Filtering,
Receiver, Transmitter,
Over-Current Protection
Voltage reference,
EEPROM
Speed detection,
Phase voltage
monitoring,
Oscillator,
Charge pump,
Internal supply,
Biasing
Storage for
customization switches/
values
Self-start wake-up
PH
LIN
Figure 1
Block diagram
LIN interface
The TLE8881-2 is controlled and monitored by a communication master device using the standard LIN
interface. Therefore, TLE8881-2 always behaves as a LIN slave device. All the information exchange with the
ECU is done via the bi-directional one-wire LIN connection.
The LIN interface block is divided into two functional blocks: 1) the LIN transceiver which is used to handle the
physical layer, and 2) the LIN protocol handler which is responsible for the data link layer processing. The LIN
transceiver is also able to detect a LIN wake-up condition on the physical layer.
Stator monitoring
In the stator monitoring block, the frequency measurement for rotor speed information, phase wake-up, self
start mechanism and the phase voltage measurement of the generator stator are processed.
Main control
The main control is the central logic of the system. Based on several parameters, this block determines in
which state the system operates. Furthermore, this block is responsible for the system diagnosis.
Data Sheet
8
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Block diagram
Register
The TLE8881-2 configuration and monitoring information are stored in a set of internal registers. These
registers can be set or read out via the LIN interface. Writable registers can be loaded either via LIN
communication or via values stored in the EEPROM. In case of missing communication, a default setting is
used by the TLE8881-2. Readable registers are loaded internally with its default values.
Regulation block
The excitation current in the rotor coil of the alternator which is adjusted by regulating the Excitation PWM
Duty Cycle at the excitation output stage determines the field strength. The output voltage to the battery
depends on the magnetic field strength and the rotor speed.
The battery voltage at the alternator (terminal VBA) is filtered and converted to a digital value. Also, the
excitation current and the junction temperature are filtered and converted to a digital value. These digital
values feed the digital regulator which is responsible for the voltage regulation, current limitation and LRC
(load response control). The generated digital duty cycle value (0 to 100%) can be modified by the LEO and
HEO functions to avoid low or high voltage conditions on the board net. The phase signal boost (PSB) function
triggers high-side DMOS to quickly re-generate the phase signal output if the amplitude of the phase signal is
not high enough. The excitation current limitation (CLIM) can apply a limitation of the excitation current. The
frequency-dependent excitation current limitation (FEXLIM) can apply a limitation of the excitation current
depending on the measured rotor speed.
An overcurrent detection and an overtemperature detection circuit switches the DMOS off to avoid
destruction in case of an excitation pin shorted to ground or thermal overload.
Core functions and EEPROM
The core functions block consists of supporting circuitry such as the internal references, an oscillator, internal
voltage supply, a charge pump for the high-side DMOS and the EEPROM (electrically erasable programmable
read-only memory). The voltage reference for the output voltage regulation is generated within this block as
well.
Data Sheet
9
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Pin and pad configuration
2
Pin and pad configuration
The Alternator Control IC TLE8881-2 is provided in industry standard PG-TO-220-5-12 Straight Leads package.
2.1
Pin assignment for PG-TO-220-5-12 package
Figure 2 shows the pin assignment for the PG-TO-220-5-12 Straight Leads package.
The related dimensions are provided in Chapter 11.
3
1
3
5
2
4
Figure 2
Pin configuration for PG-TO-220-5-12 Straight Leads
Table 2
Pin definitions and functions for PG-TO-220-5-12 Straight Leads
Pin
Symbol
Function
1
EXC
Excitation output; output to be connected with the excitation coil of the
generator.
2
3
4
5
VBA
GND
LIN
PH
Supply voltage; connected to the battery
Ground; signal ground
LIN; terminal of the LIN interface
Phase input; to be connected with one of the phases of the generator
Cooling tab; Internally connected to GND
Cooling Tab GND
Data Sheet
10
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
General product characteristics
3
General product characteristics
3.1
Absolute maximum ratings
Table 3
Absolute maximum ratings1)
All parameters are valid for: -40°C < TJ < 150°C; all voltages with respect to ground, positive current flowing into
pin (unless otherwise specified):
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min.
Typ. Max.
Voltages
Supply input voltage
(battery and alternator
voltage)
VBA
VBA
VBA
-0.3
–
–
–
40
50
–
V
V
V
static
P_3.1.0.1
Supply input voltage
(battery and alternator
voltage)
–
dynamic: pulse ISO 2 P_3.1.0.2
(ISO7637-2: 2004),
clipped to 50 V;
Supply input voltage
(battery and alternator
voltage)
-2.7
10 s; TJ = 25°C;
P_3.1.0.3
RthJA < 4 K/W
Phase input voltage
VPH
-7.5
-2.2
-40
–
–
–
35
40
40
V
V
V
–
–
–
P_3.1.0.4
P_3.1.0.5
P_3.1.0.6
Voltage on excitation pin
VEXC
Voltage difference VBA - LIN VLIN
pin
Temperature
Junction temperature
Storage temperature
ESD susceptibility
TJ
-40
–
–
175
150
°C
°C
–
–
P_3.1.0.7
P_3.1.0.8
TSTORAGE -45
ESD resistivity
pin to GND
VESD
-8
-2
–
–
8
2
kV
kV
HBM according to
ANSI/ESDA/JEDEC JS-
001
P_3.1.0.9
ESD resistivity
all pins
VESD
HBM according to
ANSI/ESDA/JEDEC JS-
001
P_3.1.0.10
1) Not subject to production test.
Notes
1. Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
2. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Data Sheet
11
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
General product characteristics
3.2
Functional range
Table 4
Functional range
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Supply voltage for
full operation
VBA
VBA
6
–
18
V
For full operation;
BA decreasing
P_3.2.0.1
P_3.2.0.2
V
Supply voltage for
operation without
LIN Communication
5.5
–
18
V
VBA decreasing
Supply voltage for
jumpstart
VBA
–
–
27
5.5
80
V
1); TJ = 25°C
P_3.2.0.3
P_3.2.0.4
P_3.2.0.5
Supply voltage for
reduced operation
VBA
3.8
–
–
V
see Chapter 3.41)
Stand-by current
IBA,standby
60
μA
TJ = 25°C;
VBA = 12.5 V;
V
PH = 0 V;
EXC open circuit;
LIN = VBA
V
Current
consumptioninstate
“COM active”
IBA
–
–
18
–
24
25
mA
mA
VBA = 12.5 V;
VPH = 0 V;
EXC open circuit;
P_3.2.0.6
P_3.2.0.7
V
LIN = VBA or
LIN open circuit
Current
IBA
VBA = 12.5 V;
consumptioninstate
“normal operation”
EXC open circuit;
V
LIN = VBA or
LIN open circuit
Operation
temperature
TJ
TJ
-40
–
–
150
°C
°C
–
P_3.2.0.8
P_3.2.0.9
Operation
temperature
150
TSD
1); fully functional.
parameter
deviations
permissible.
Overtemperature
shut-down threshold
TSD
165
–
–
–
185
10
°C
–
P_3.2.0.10
P_3.2.0.11
1)
Time to initialize the tpower-up
system after
ms
power-up
Data Sheet
12
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
General product characteristics
Table 4
Functional range (cont’d)
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
1)
Time to exit mode
“stand-by”
texit-stby
–
–
200
μs
P_3.2.0.12
P_3.2.0.14
High-battery voltage VHIGHMAR 0.4
threshold margin to
the typ. VSETmax
–
–
V
1); margin to the
maximum set
voltage VSET of
16.0 V
1) Not subject to production test.
3.3
Thermal resistance
This thermal data was generated in accordance with JEDEC JESD51 standards.
For more information, go to www.jedec.org.
Table 5
Thermal resistance
Symbol
Parameter
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
1)
Junction to case
RthJC
–
–
1.9
K/W
;
P_3.3.0.1
TA = 125°C; PV = 7 W;
only for packaged
device
1) Not subject to production test.
3.4
Reduced operating range
If the voltage drops into the reduced operation range, all functions except the LIN communication of the
TLE8881-2 are ensured, but parameters may be out of limit.
The LIN communication voltage range is defined in Table 54.
If coming from stand-by mode, a voltage above the reduced operation range must be reached to ensure that
internal voltage is activated and the TLE8881-2 will safely wake up from stand-by mode.
Data Sheet
13
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
4
Main control block
4.1
State diagram
The functional behavior of the TLE8881-2 is described in the state diagram in Figure 3.
The number in front of the state-change condition represents its priority in case multiple conditions are valid
simultaneously (the lower number has higher priority).
TLE8881-2 allows the following operating states:
•
•
•
•
•
•
•
Stand-by
ComActive
Pre-excitation
Normal operation
Default operation
Excitation-off
Overtemperature
Please refer to Figure 3 and the following chapters for state transitions and detailed state descriptions. The
related rotation parameters and the respective rotational speed events are shown in Table 6 and Table 7.
List of abbreviations:
2: „Restore State“ and „Normal operation data flag“=0
Default Operation 1)
VSET:
DC:
CTO:
TJ:
Voltage Setpoint Register
Excitation PWM Duty Cycle
LIN Communiction Timeout
Junction Temperature
2: nR<nCUT1
1: TJ > TSD
DC regulated
TSD
PH=1:
PH=0:
:
Over Temperature Threshold
Phase Signal detected
Loss off Phase Signal
EXC Toggling
LIN ON
Over-
1: PH=0 or TJ < (TSD - 5°C)
Temperature
3: CTO=1
3: Valid LIN frame
Set CTO:=0
Full digital
Self-Reset
EXC OFF
LIN OFF
3: (PH=0 and CTO=1)
or LIN sleep command
1: TJ > TSD
1: TJ > TSD
1: LIN wake-up
Set CTO:=0
Normal Operation 1)
4: (VSET>10.6V and valid LIN RX frame)
or (nR>nCUT2 and CTO=1)
ComActive
Pre-Excitation
4: nR>nCUT1
2: nR<nCUT1
DC regulated
Stand-by
EXC Toggling
LIN ON
DC := 0%
DC := NVM-PEXCDC
2: Self-Start wake-up
Set CTO:=1
2: (CTO=0 and VSET=10.6V)
or (PH=0 and CTO=1)
or (PH=1 and LIN sleep command)
EXC OFF
LIN ON
EXC Toggling
LIN ON
Power-Up
4: VSET=10.6V
and NVM-EOFF=1
1: VSET>10.6V
3: PH=0 and LIN sleep command
Excitation-Off
EXC OFF, LIN OFF
1: „Restore State“ and „Normal operation data flag“=1
DC := 0%
2: CTO=1
EXC OFF, LIN ON
EXC OFF
LIN ON
EXC Toggling, LIN ON (no regulation)
EXC Toggling, LIN ON (active regulation)
1) The functions LRC (Load Response Control), PSB (Phase Signal Boost),
LEO (Low voltage switch Excitation On) and HEO („High voltage switch
Excitation Off“) are not shown in this state diagram.
Figure 3
State diagram
Data Sheet
14
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
4.2
Rotational speed events
The rotational speed nR is determined by measuring the frequency of the phase input. The phase frequency
depends on the rotor speed as well as on the alternator pole pairs. The alternator pole pairs are configurable
via NVM-PP. The self-start speed can be configured in the NVM field NVM-SSS.
The parameters as shown in Table 6 influence the rotational speed events.
Table 6
Parameter rotor speed measurement
All parameters are valid for: -40°C < TJ < 150°C; VBA=14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or Test Condition
Number
Min.
Max.
1)
Cut-in rotor speed 1 nCUT1
(cranking speed
threshold)
500
560
610
rpm
P_5.2.0.1
Cut-in rotor speed 2 nCUT2
(self start detection
threshold)
Typ.
value -
10%
Typ.
value
Typ.
value
+10%
rpm
rpm
1); typ. value adjustable via P_5.2.0.2
NVM-SSS
LRC disable rotor
speed
nLRCDIS Typ.
Typ.
value
Typ.
value
+10%
1); typ. value adjustable via P_5.2.0.3
RLRCDIS register
(Chapter 6.4.3), or via
NVM-LRCDIS
value -
10%
1) Not subject to production test.
The rotational speed nR influences several state-transition events. Such events are detected according to the
conditions in Table 7.
Table 7
Event
Rotational speed events and conditions
Description
Set condition
(event is
Clear condition
(event is cleared)
generated)
“nCUT1” event
“nCUT2” event
Necessary event for normal operation;
If the event is detected, TLE8881-2 changes measurements with measurements with
from pre-excitation to the normal
operation state)
8 consecutive
3 consecutive
nR > nCUT1
nR < nCUT1
Related to self-start speed (emergency
start-up);
5 consecutive
measurements with nR < nCUT2
1 measurement with
1)
If the event is detected, TLE8881-2 changes nR > nCUT2
from stand-by to the pre-excitation state
without waiting for the command of
VSET > 10.6 V
“LRC disable”
event
Used by the LRC function, refer to
Chapter 5.11
5 consecutive
measurements with measurements with
3 consecutive
nR > nLRCDIS
nR < nLRCDIS
1) No state transition associated.
Data Sheet
15
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
4.3
LIN communication events
The “CTO” event in the state diagram indicates the state of the LIN communication time-out flag:
•
CTO = 1: The LIN communication timer expired, no valid LIN frame received within tCTO time frame, or
wake-up via phase signal detected
•
CTO = 0: Valid LIN frame received or transmitted - LIN communication OK
Valid LIN frames contain LIN IDs such as 0x3C and 0x3D as well as the related IDs for a LIN RX/TX1/TX2/TX3
frame.
Table 8
Parameters for internal LIN timers
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
LIN Communication
time-out
tCTO
2.7
3
3.3
s
1); If time is
expired, then
CTO := 1, else
CTO := 0
P_5.3.0.1
1) Not subject to production test.
4.4
State description
TLE8881-2 includes the following functions which are available in each state according to Table 9:
•
•
•
•
•
•
•
•
•
•
Current Limitation (CLIM), refer to Chapter 5.4
Low Excitation On (LEO), refer to Chapter 5.9
High-Voltage Excitation Off (HEO), refer to Chapter 5.9
Phase Signal Boost (PSB), refer to Chapter 5.11
Load Response Control (LRC), refer to Chapter 5.12
Frequency-dependent Excitation Current Limitation (FEXLIM), refer to Chapter 5.13
Regulation Parameters Control via LIN (F-Para), refer to Chapter 5.14
Speed-dependent KiKp parameter sets (KiKp function), refer to Chapter 5.15
Voltage-dependent KiKp function (VoKiKp), refer to Chapter 5.16
Speed-dependent lowering of the HEO limit (LowHEO), refer to Chapter 5.17
4.4.1
Feature priorities
The availability of these mentioned features in the states of the state machine is shown in Table 9.
Occasionally, some features can be enabled/disabled or adjusted via NVM fields. In addition to the
information in Table 9, some features can be tuned using NVM fields.
Table 9 also includes a column to represent the related priority, if more than the features’ conditions are
fulfilled at the same time. Lower priority numbers have higher priorities.
As an example: While the TLE8881-2 state machine is in normal operation mode and the conditions are fulfilled
for high-voltage excitation off (VBA > 16.5 V) and phase signal boost (VPH < 7 V), only the high-voltage excitation
off will be activated. This means that the excitation driver stage will be switched off completely (DC := 0%).
Data Sheet
16
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Table 9
Feature
Available features in state machine
Priority States of state machine
Com
Pre-
Normal
Default
Excitation- Overtem-
active
excitation operation operation off
perature
HEO / LowHEO
PSB
1
–
–
–
–
–
–
✓
–
–
–
–
–
✓
✓
✓
✓
✓
✓
✓
✓
✓
–
–
–
–
–
–
–
–
–
–
–
–
–
2
LEO
3
41)
CLIM
FEXLIM
5
51)2)
✓
LRC
✓
1) LRC and CLIM have the same priority. Excitation PWM duty cycle is limited by the lower limiting value.
2) If LRC and CLIM/FEXLIM are active at the same time, the excitation PWM duty cycle is limited by the lower limiting
value.
Note: Load Response Control (LRC) may control the rising gradient of the excitation PWM duty cycle and can be
overridden by the immediate switch-on of the excitation output stage if the conditions for LEO are fulfilled
(VBA < NVM-LEO voltage).
4.4.2
“Stand-by”
The TLE8881-2 is generally in stand-by mode when the engine of the vehicle is off. No voltage is induced into
the stator because the rotor is standing still. The LIN communication is off. To avoid draining the battery, the
stand-by mode current is defined to be very low. The only active circuits are “LIN wake-up” and “self-start
detection”.
There are three ways to wake-up and to transfer from state “stand-by” to state “ComActive”:
•
On the communication line of the LIN interface, pulses are detected which are longer than the specified
bus dominant time for LIN wake-up, tLINWK (refer to Table 54).
•
•
The amplitude of the AC signal at the phase input surpasses the self-start wake-up threshold.
Power-up at supply (from un-powered state).
The TLE8881-2 will return to stand-by from the ComActive state if no valid communication is received for a
certain period of time (CTO = 1) and if the signal at the phase input is below the self-start wake-up threshold,
or a LIN sleep command has been received.
For detailed definitions of all registers refer to Chapter 6.4.
Table 10 State “stand-by” entry conditions
Entry from state
State entry condition
ComActive
(PH = 0 (loss of phase signal) AND CTO = 1 (no valid LIN frame received for tCTO)) OR LIN
sleep command
Pre-excitation
PH = 0 (loss of phase signal) AND LIN sleep command
Table 11 State “stand-by” exit conditions
Exit to state
State exit condition
ComActive
LIN activity (set CTO := 0)
Data Sheet
17
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Table 11 State “stand-by” exit conditions (cont’d)
Exit to state
ComActive
ComActive
State exit condition
Self-start wake-up (set CTO := 1)
Power-up
Table 12 State “stand-by” behaviors
Function
Behavior mode
0%
Excitation PWM duty cycle
LIN bus communication
Restore state function
Only wake-up detection
Disabled
4.4.3
State “ComActive”
While in ComActive state, the device is ready for communication, but the rotor coil of the alternator is not yet
energized through the excitation output stage.
Table 13 State “ComActive” entry conditions
Entry from state
-
State entry condition
Power-up
Every state
Stand-by
Logic reset
LIN activity (set CTO = 0)
Self-start wake-up (set CTO = 1)
nR < nCUT1
Stand-by
Default operation
Overtemperature
PH = 0 (loss of phase signal) OR
no overtemperature detected (TJ < (TSD - 5°C))
Pre-excitation
(CTO = 1 (no valid LIN frame received for tCTO) AND PH = 0 (loss of phase signal)) OR
(VSET = 10.6 V AND CTO = 1 (valid LIN frame received)) OR
(LIN sleep command AND PH = 1 (phase signal detected))
Table 14 State “ComActive” exit conditions
Exit to state State exit condition
Normal operation1) Restore state information is valid AND “normal operation data bit flag” = 1
(Chapter 8.5)
Stand-by
(PH = 0 (loss of phase signal) AND (CTO = 1 (no valid LIN frame received for tCTO)) OR LIN
sleep command)
Pre-excitation
(Valid LIN RX frame received AND VSET > 10.6 V) OR
(nR > nCUT2 AND CTO = 1 (no valid LIN frame received for tCTO
)
Default operation1) Restore state information is valid AND “normal operation data bit flag” = 0
1) In case of an inadvertent logic reset
Data Sheet
18
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Table 15 State “ComActive” behaviors
Function
Behavior mode
Excitation PWM duty cycle
LIN bus communication
Restore state function
0%
Fully functional
Inactive (register data not updated)
4.4.4
State “pre-excitation”
Pre-excitation state is the entering state for normal and/or default operation state. The pre-excitation state is
designed to energize the rotor coil of the alternator during the engine cranking phase. In this state, the
alternator should generate almost no power to the output, but enough energy to have a proper phase signal.
The pre-excitation state provides a fixed excitation PWM duty cycle at the excitation output stage which can
be adjusted via NVM-PEXCDC.
Table 16 State “pre-excitation” entry conditions
Entry from state
State entry condition
ComActive
(Valid LIN RX frame received AND VSET > 10.6 V) OR
(nR > nCUT2 AND CTO = 1 (no valid LIN frame received for tCTO
)
Normal operation
nR < nCUT1
Table 17 State “pre-excitation” exit conditions
Exit to state
ComActive
State exit condition
Logic reset
Overtemperature
Normal operation
ComActive
Overtemperature detected (TJ > TSD
nR ≥ nCUT1
)
(CTO = 1 (no valid LIN frame received for tCTO) AND PH = 0 (loss of phase signal)) OR
(VSET = 10.6 V AND CTO = 0 (valid LIN frame received) OR
(LIN sleep command AND PH = 1 (phase signal detected))
IC in stand-by
PH = 0 (loss of phase signal) AND
(LIN sleep command)
Table 18 State “pre-excitation” behaviors
Function
Behavior mode
Excitation PWM duty cycle
LIN bus communication
Restore state function
Fixed - adjustable in EEPROM
Fully functional
Inactive (register data not updated)
4.4.5
State “normal operation”
The normal operation state is used to deliver power to the board net with control of the ECU. The entry and
exit conditions are shown in the following tables.
Data Sheet
19
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Table 19 “Normal operation” entry conditions
Entry from state
State entry condition
ComActive
Restore state information is valid AND “normal operation data bit flag” = 1
(Chapter 8.5)
Pre-excitation
Default operation
Excitation off
nR ≥ nCUT1
Valid LIN frame received (CTO := 0)
VSET > 10.6 V, if NVM-EOFF = 1B
Table 20 State “normal operation” exit conditions
Exit to state
State exit condition
Logic reset
ComActive
Overtemperature
Pre-excitation
Default operation
Excitation off
Overtemperature detected (TJ > TSD
)
nR < nCUT1
CTO = 1 (no valid LIN frame received for tCTO
)
VSET = 10.6 V, if NVM-EOFF = 1B
Table 21 State “normal operation” behaviors
Function
Behavior mode
Excitation PWM duty cycle
LIN bus communication
Restore state function
According to control characteristics (Table 36)
Fully functional
Active AND “normal operation data bit flag” = 1; (some
register data is updated)
4.4.6
State “excitation off”
The excitation-off state is used to quickly switch off the EXC output, setting the internal register VSET to 10.6 V
via the LIN communication. This state is only available, if NVM-EOFF = 1B.
Table 22 State “excitation off” entry conditions
Entry from state
State entry condition
Normal operation
VSET = 10.6 V, when NVM-EOFF = 1
Table 23 State “excitation off” exit conditions
Exit to state
State exit condition
ComActive
Logic reset
Normal operation
Default operation
VSET > 10.6 V, if NVM-EOFF = 1B
CTO = 1 (no valid LIN frame received for tCTO
)
Data Sheet
20
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Table 24 State “excitation off” behaviors
Function
Behavior mode
Excitation PWM duty cycle
LIN bus communication
Restore state function
0%
Fully functional
Inactive (register data not updated)
4.4.7
State “default operation“
The default operation state is defined for the case that no LIN communication and rotating alternator are
available.
The state machine will enter the default operation state if the LIN communication is not functional for more
than tCTO. For this reason, while entering this state TLE8881-2 will reset the internal LIN RX registers to their
default configuration.
The TLE8881-2 will apply the default register values upon entry (see Chapter 6.5). As soon as a valid LIN frame
is received, the TLE8881-2 will leave default operation and enter the normal operation state.
Table 25 State “default operation” entry conditions
Entry from state
Normal operation
Excitation off
State entry condition
CTO = 1 (no valid LIN frame received for tCTO
CTO = 1 (no valid LIN frame received for tCTO
)
)
ComActive
Restore state information is valid AND “normal operation data bit flag” = 0
(Chapter 8.5)
Table 26 State “default operation” exit conditions
Exit to state
ComActive
State exit condition
Logic reset
Overtemperature
ComActive
Overtemperature detected (TJ > TSD
nR < nCUT1
)
Normal operation
Valid LIN frame received
Table 27 State “default operation” behaviors
Function
Behavior mode
Excitation PWM duty cycle
LIN bus communication
Restore state function
According to control characteristics (Table 36)
Available, but communication is timed out (CTO = 1)
Active AND “normal operation data bit flag” = 0; (some
register data is updated)
4.4.8
State “overtemperature”
If the TLE8881-2 detects an overtemperature, a critical condition is generally assumed and all outputs are
switched off and the internal power consumption is reduced to a minimum. After returning from an
overtemperature state (hysteresis avoids toggling around TSD value), a self-reset is triggered and the default
values are set.
Data Sheet
21
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Table 28 State “overtemperature” entry conditions
Entry from state
Pre-excitation
State entry condition
Overtemperature detected (TJ > TSD
)
Normal operation
Default operation
Table 29 State “overtemperature” exit conditions
Exit to state
ComActive
State exit condition
Logic reset
ComActive1)
PH = 0 (loss of phase signal) OR
no overtemperature detected (TJ < (TSD - 5°C))
1) Additional action: Logic reset, all internal registers will be initialized (see Table 5)
Table 30 State “overtemperature” behaviors
Function
Behavior mode
Excitation PWM duty cycle
LIN bus communication
Restore state function
0%
Not available
Inactive (register data not updated)
4.5
Diagnostic flags
The TLE8881-2 supplies a set of status-, abnormality- and LIN communication error flags readable via the LIN
interface. These error flags generally have specific root causes.
The following diagnosis flags are available:
F-HT, F-ROT, F-EL, F-CTO, F-CEF
The LIN communication error flags are stated in Table 31. The LIN communication error flags such as F-CTO
and F-CEF are cleared by a logic reset or by a LIN read-out via TX1 or TX3.
Table 31 Diagnosis table for LIN communication error flags
Abnormality
Conditions
Action
LIN communication time-out detected
No valid LIN frame detection for more than F-CTO := 1
tCTO
LIN 1.3 error detected
At least one of these errors is detected:
F-CEF := 1
•
•
•
•
•
Parity error
Sync field error
Checksum error
Bit error
Frame error
LIN 2.1 error detected
At least one of these errors is detected:
F-CEF := 1
•
•
•
Checksum error
Bit error
Frame error
Data Sheet
22
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
4.5.1
High-temperature diagnostic flag
The high-temperature diagnostic flag F-HT is set when the junction temperature of the chip reaches the TCOMP
threshold. The F-HT flag is communicated without debouncing (refer to Chapter 5.6 for detailed information).
Table 32 Error table: F-HT flag
Failure case
Conditions
States
ComActive
Pre-
excitation
Normal
operation
Excitation-
off
No abnormality
Normal conditions
0
-
0
-
0
1
0
-
High temperature
TJ > TCOMP
Note: In some states the condition cannot be detected or it does not influence the value of the flag
(indicated with “-”).
4.5.2
Mechanical error flag
The mechanical error flag F-ROT can be configured in EEPROM via NVM-FROT_SEL, see Table 33.
Table 33 Error table: F-ROT flag
Failure case
Conditions
NVM settings States
ComActive Pre-
excitation
Normal
Excitation-
operation off
10.6 V VBA <
< VSE VSET
T ≤
VBA
No abnormality1) Normal conditions NVM-
FROT_SEL =
0
1
1
1
1
0
0
0
1
00B (VDA)
NVM-
1
FROT_SEL =
01B
1) F-ROT flag is a state indicator and can be configured by NVM-FROT_SEL. A mechanical error is indicated by a
unexpected state transition which can be detected with the F-ROT flag.
4.5.3
Electrical error flag
The electrical error flag F-EL is debounced as specified in Table 35.
The electrical error flag F-EL is set if one of the conditions described in Table 34 is detected for longer than the
deglitch filter time tF-EL,Set (see Table 35).
If none of the condition is detected for longer than the deglitch filter time tF-EL,Reset (see Table 35), the flag
returns to the initial value described by the “normal conditions” row.
All analogue protection functions (analogue HEO, over-current protection, over-temperature protection,
watchdog monitoring) will trigger the conditions for “field voltage too low” or “loading error”. Thus, F-EL will
be set according to these failure cases.
Data Sheet
23
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Table 34 Error table: F-EL flag
Failure case
Conditions
NVM settings / States
speed
ComActive Pre-
Normal
Excitation
excitation operation off
No abnormality
Normal conditions –
0
0
0
0
Broken drive belt,
phase circuit
broken, EXC system VPH,max < 7 V or
Phase signal
error;
nR < nCUT1
-
-
-
-
-
-
-
nR > nCUT1
1
broken, stalled
alternator
VPH,min > 1 V for 1
PSB period
(Chapter 5.11)
EXC terminal short Continuous full
–
1
-
-
-
-
1
1
1
1
-
to B+,
field;
excitation output
VEXC > 1 V during
stage in short circuit low-time of EXC
PWM1)
EXC terminal short Field voltage too
–
–
to GND,
low;
free-wheeling diode VEXC < 1 V during
in short circuit2)
high-time of EXC
PWM3)
Excitation coil
broken
Loading error;
DC = 100% and
four
-
-
measurements
with IEXC < IEXC,100
4)
Double battery,
battery charger,
broken regulator
EXC control
VBA too high;
NVM-
HEO_ERR_EN
-
-
-
-
V
HIGH < VBA
(Chapter 5.10) or = 0B
V
LowHEO < VBA if
NVM-
HEO_ERR_EN=
1B
1
1
1
1
LowHEO is active
(Chapter 5.17)
Overloading,
broken rectifier
system of
alternator, broken
stator system
VBA too low;
NVM-
LEO_ERR_EN
= 0B
-
-
-
-
-
5)
V
LOW > VBA
,
(Chapter 5.9)
NVM-
LEO_ERR_EN =
1
1
1
1B
1) No detection of short to B+ if DC > 85%
2) The same error reporting can be caused by internal error conditions like e.g. OT of excitation output stage or over
current protection of excitation output stage.
3) No detection of short to GND if DC < 15%
4) Refer to Chapter 5.3 for information on the sample update rates.
5) If the LEO function is activated. Refer to Chapter 5.9 for more details.
Data Sheet
24
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Main control block
Note: In some states the condition cannot be detected or it does not influence the value of the flag
(indicated with “-”).
The F-EL debounce filter is active according to the selection in NVM-T_EL_ERR . The filter time is specified in
Table 35.
Table 35 Parameters for diagnostic flag delays
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Delay time to set
diagnostic flag F-EL
tF-EL,Set
tF-EL,Set
tF-EL,Reset
150
250
350
ms
ms
ms
1); NVM-
T_EL_ERR = 0B
1); NVM-
T_EL_ERR = 1B
P_5.5.3.1
P_5.5.3.3
P_5.5.3.2
Delay time to set
diagnostic flag F-EL
900
20
1000
62.5
1100
100
1)
Delay time to reset
diagnostic flag F-EL
;
1) Not subject to production test.
Data Sheet
25
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
5
Regulation functions
5.1
Control system
Table 36 Parameter control system
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min.
Typ. Max.
1) 2) 3)
Control accuracy VBA
VSET - 0.2
–
VSET + 0.2
V
P_6.2.0.1
of output voltage
Closed loop operation;
TSC function not limiting
VSET;
Control accuracy VBA
at load variations
-150
-50
–
–
150
150
–
mV 1) 3); Relative to static value P_6.2.0.2
Test condition:
5 A < IALT < 0.9 * IALTMAX
;
nROT = 6000 rpm
Control accuracy VBA
at speed variations
–
mV 1) 3); Relative to static value P_6.2.0.3
Test condition:
IALT = 5 A, TJ = +25°C
2500 ≤ nROT < 18000 rpm
Excitation PWM
frequency
fEXC
220
Hz
Hz
In state
P_6.2.0.4
“normal operation” and
“default operation”. In
state “pre-excitation”, if
NVM-
PREEXC_27HZ5_DIS = 1B
See oscillator tolerance
(Chapter 8.3)
Excitation PWM
frequency
fEXC
–
27
–
In state “pre-excitation”, if P_6.2.0.5
NVM-
PREEXC_27HZ5_DIS = 0B
See oscillator tolerance
(Chapter 8.3)
1) 4)
Average excitation DC
PWM duty cycle
0%
-
-
99.8%
+ 10
-
P_6.2.0.6
8 bits resolution (= 0.39%)5)
1)
Excitation PWM
duty cycle
DCacc
- 10
%
;
P_6.2.0.8
L
Load = 5mH;
accuracy in state
normal operation
RLoad = 10 Ω;
TJ = 25°C;
6)
Excitation PWM
duty cycle in state
pre-excitation
DC
Typ. value Typ. Typ. value
-
P_6.2.0.7
- 10%
value + 10%
Typ. value adjustable by
NVM field NVM-PEXCDC
1) Not subject to production test.
Data Sheet
26
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
2) Test condition: IALT = 5 A, nR = 6000 rpm, VSET = 14.3 V
3) VBA measured between BA terminal and GND terminal.
4) Maximum average PWM duty cycle of 99.8% may not be completely applied to the excitation output stage because
the current measurement function requires a periodic switch-off at the excitation pin which results in a reduced
average PWM duty cycle (refer to Chapter 5.3).
5) This value represents the internal accuracy of the digital circuit. Externally the duty-cycle accuracy is dependent on
the applied load and may vary.
6) The excitation PWM duty cycle in pre-excitation state should be adjusted in a way that the alternator provides an
appropriate phase signal.
5.2
Excitation output driver
The excitation output stage is protected with a dedicated overtemperature sensor and a dedicated
overcurrent protection. The characteristics related to the excitation output stage are stated in Table 37.
The excitation MOSFET is driven with a curve shaping technique in order to improve the EMC behavior.
Depending on NVM-CSHT, the curve shaping can be deactivated at temperatures above 135°C.
Table 37 Parameter “excitation output driver”
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
On resistance on die RDSON,DIE
level
–
53
95
60
95
–
65
mΩ
mΩ
mΩ
mΩ
IEXC = 1 A; TJ = 25°C P_6.3.0.1
On resistance on die RDSON,DIE
level
–
110
–
IEXC = 1 A
P_6.3.0.2
P_6.3.0.3
P_6.3.0.4
P_6.3.0.5
P_6.3.0.6
P_6.3.0.7
On resistance in
package
RDSON,PCK
RDSON,PCK
SLON
–
IEXC = 1 A;
TJ = 25°C
On resistance in
package
–
110
3
IEXC = 1 A
Switch on slew rate
0.8
0.8
–
V/μs Test condition:
Resistive load only
Switch off slew rate
SLOFF
–
3
V/μs Test condition:
Resistive load only1)
DMOS overcurrent
IEXC
–
typ. NVM- A
CLIM
TJ = -40°C
protection threshold
NVM field NVM-CLIM
+1.5A
DMOS overcurrent
protection threshold
IEXC
IEXC
–
typ. NVM- –
CLIM
A
A
TJ = 25°C
NVM field NVM-CLIM
P_6.3.0.8
P_6.3.0.9
DMOS overcurrent
typ.
–
–
TJ = 150°C
protection threshold
NVM-
CLIM -
1.0A
NVM field NVM-CLIM
Excitation free
wheeling voltage
VEXC
-2.0
-1.7
–
V
IEXC = 8 A; TJ = 25°C, P_6.3.0.11
measured between
EXC terminal and
GND terminal
1) Not subject to production test.
Data Sheet
27
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
5.3
Excitation current measurement
The excitation current flowing through the free-wheeling path is measured while the excitation DMOS is
switched off by using a dedicated shunt resistor. The sampled excitation current is averaged over several
excitation PWM duty cycle periods.
The excitation current measurement functionality forces a single measurement cycle of the excitation current
at least every 32 PWM periods. This single measurement cycle results in a maximum ON-time of the excitation
PWM duty cycle of 93% and a minimum OFF-time of the excitation PWM duty cycle of 7% for one single PWM
period.
The TLE8881-2 attempts to achieve a good balance between the maximum average excitation PWM duty cycle
and a good sample rate of the excitation current. For all target duty cycle values below 93%, a sampling of the
excitation current will be performed in every excitation PWM cycle. Achieving higher duty cycle values is
managed by decreasing the sampling rate of the excitation current measurement. In such cases, the
measurement is executed at frequencies up to fEXC/32.
If the excitation current limitation function (Chapter 5.4) as well as the LIN Filters (Chapter 6.6) are active, the
excitation DMOS is forced off with a higher frequency (up to the nominal excitation PWM frequency fEXC) to
perform new measurements more often.
Table 38 Parameter excitation current measurement
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or Test Condition
Number
Min.
Max.
Excitation current fCUPD
update rate
fEXC/32
–
fEXC
Hz
–
P_6.4.0.1
P_6.4.0.2
Accuracy of the
excitation current
measurement
IEXCACC
IEXCACC
IEXCACC
–
–
–
–
250
–
mA IEXC ≤ 5 A; resistive or
inductive load for 0 A (no
open EXC)
Accuracy of the
excitation current
measurement
5%
10%
–
–
-
-
-
5 A < IEXC ≤ 8 A
P_6.4.0.3
P_6.4.0.4
P_6.4.0.5
Accuracy of the
excitation current
measurement
–
IEXC > 8 A
Maximum average DCMAX,avg
excitation PWM
99.8%
Current limitation
disabled;
duty cycle
current measurement
performed at minimum
frequency of fEXC/32 (higher
values possible)
Data Sheet
28
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Table 38 Parameter excitation current measurement (cont’d)
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or Test Condition
Number
Min.
Max.
Maximum average DCMAX,avg
excitation PWM
duty cycle
–
–
99.125%
-
Active filter for excitation
Current (RMC Filter),
Chapter 6.6.3;
P_6.4.0.6
current measurement
performed at minimum
frequency of fEXC/8 (higher
values possible)
Maximum average DCMAX,avg
excitation PWM
duty cycle
–
–
99.6%
-
Enabled excitation current P_6.4.0.7
limitation function (both
CLIM or FEXLIM);
current measurement
performed at minimum
frequency of fEXC/16 (higher
values possible)
5.4
Limitation of Excitation Current (CLIM)
The Excitation Current Limitation (short: CLIM) limits the average output current of the excitation output stage
to an adjusted upper current threshold.
CLIM can be active only in the normal and default operation states. The current thresholds are set differently
according to the operation states in which TLE8881-2 is functioning, both via NVM or LIN fields. When changing
the state from normal or excitation off mode to default mode, the excitation current limit (CLIM) is ramped to
the new setting with 0.375A/s.
In case multiple thresholds for the same function are active simultaneously, TLE8881-2 shall use the more
restrictive one. Basically, the limitation value (parameter CLIM) can be configured via the LIN interface
(TLE8881-2 register “RCLIM”). For the limitation values, refer to Chapter 6.4.4. Beside the LIN-controlled
limitation value, the FEXLIM function can adjust a specific limitation value (refer to Chapter 5.13).
If the excitation current limitation is activated, the configured voltage setpoint (VSET) may not be achieved,
since the voltage regulator might require a higher excitation current.
5.5
Temperature measurement
The junction temperature, TJ, is measured every 4.5 ms.
A change of the temperature value is limited by the rise/fall gradient, TFRF, while in the normal and default
operation states only. For other operation states, changes of the temperature values are immediately applied
(no usage of rise/fall gradient, TFRF)
The temperature value, which is driven by TFRF, is used for:
•
•
•
F-HT diagnosis flag, or
Temperature compensation of the voltage setpoint (VSET) in case of TJ > THT
Frequency dependent excitation current limitation (FEXLIM)
The detection of overtemperature, TSD, is always derived from the non-limited temperature value (no usage of
rise/fall gradient, TFRF).
Data Sheet
29
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Table 39 Parameter temperature measurements
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified:
Parameter
Symbol
Values
Typ.
28
Unit Note or Test Condition Number
Min.
Max.
Temperature rise/fall
gradient
TFRF
–
–
K/s
Used in normal
operation, default
operation
P_6.6.0.1
P_6.6.0.2
Junction temperature
measurement tolerance
ΔTJ
ΔTJ
-10
-5
–
–
+10
+5
K
K
–
Junction temperature
measurement tolerance
Device in “ComActive” at P_6.6.0.3
25°C ambient
temperature1)
1) Only wafer test
5.6
Temperature Setpoint Compensation (TSC)
The temperature compensation gradually decreases the voltage setpoint (VSET) based on the measured
junction temperature of the device. To compensate the produced energy at the excitation output stage, VSET
is decreased at higher temperatures.
The behavior of the temperature compensation in normal operation can be adjusted via EEPROM and LIN
frames. Figure 4 shows the behavior including the influence factors of the two parameters THT and the high-
temperature gradient HTG.
THT is the high-temperature threshold from where the temperature compensation would be activated if the
voltage setpoint is set to 16 V. THT can be adjusted in EEPROM via NVM field NVM-THT and via HTADJ
(modifiable via RHT register in LIN RX frame). The adjustment via EEPROM is an absolute threshold value,
whereas the adjustment via LIN adds a relative offset (positive or negative) to the EEPROM adjustment of the
absolute threshold value. NVM-HTG defines the gradient of the temperature compensation phase for the
voltage setpoint of 16 V.
The temperature compensation is activated as soon as the actual VSET intersects with the gradient HTG -
intersection point is called TCOMP. Calculation of TCOMP (as shown in Figure 4), is stated in Equation (5.1)
(5.1)
VSET - 16 V
= “NVM-THT“ + HTADJ +
TComp
“NVM-HTG“
The lower the HTG gradient, the later the compensation will be activated. The higher the actual voltage
setpoint, the earlier the compensation will be activated.
As soon as TJ > TCOMP, the high-temperature diagnostic flag (F-HT) is set to 1.
Data Sheet
30
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Voltage Set-
point
16 V
VSET
“NVM-HTG“
“NVM-THT“ +
HTADJ
10.6 V
Temperature
-42 °C
20 °C
THT
TComp
TSD
Figure 4
Temperature compensation example for specific values
5.7
Voltage measurement
The voltage measurement is performed at the VBA terminal with reference to the GND (ground) terminal.
TLE8881-2 has two different voltage measurement ranges:
•
•
Measurement path with higher accuracy for the regulation range (10.6 V to 16 V).
Measurement path with lower accuracy covering voltages outside the regulation range (8 V to 10.6 V and
16 V to 24 V).
The voltage measurement at the VBA terminal relative to the GND terminal is based on the accuracy as stated
in Table 40.
The overall voltage measurement is in the range between 8 V and 24 V.
Table 40 Parameter voltage measurement
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Accuracy of
voltage
measurement
VBATACC
–
–
–
–
500
mV
mV
mV
VBA < 8.75 V
P_6.8.0.1
Accuracy of
voltage
measurement
VBATACC
–
–
400
300
8.75 V ≤ VBA < 9.5 V P_6.8.0.2
9.5 V ≤ VBA < 10.0 V P_6.8.0.3
Accuracy of
voltage
VBATACC
measurement
Data Sheet
31
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Table 40 Parameter voltage measurement (cont’d)
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Accuracy of
voltage
measurement
VBATACC
–
–
–
–
–
250
mV
mV
mV
mV
10.0 V ≤ VBA
10.5 V
<
P_6.8.0.4
Accuracy of
voltage
measurement
VBATACC
VBATACC
VBATACC
–
–
–
200
400
700
10.5 V ≤ VBA
16.0 V
<
P_6.8.0.5
Accuracy of
voltage
measurement
16 V ≤ VBA ≤ 16.5 V P_6.8.0.6
16.5 V < VBA ≤ 24 V P_6.8.0.7
Accuracy of
voltage
measurement
5.8
Speed measurement
The measurable speed is limited in the range from 500 rpm to 25500 rpm. The determination of the speed is
done by measuring the frequency of the signal at the phase terminal and normalizing to the alternator pole
pairs (NVM field NVM-PP).
The speed measurement is only available in the normal operation state.
The representation of the speed measurement value is based on the accuracy as stated in Table 41 and on the
register resolution (capability of lowest significant bits).
Table 41 Parameter speed measurement
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
10
Unit Note or
Test Condition
Number
Min.
Max.
1)
Accuracy of speed wmeasACC
measurement
–
–
%
P_6.9.0.1
1) Not subject to production test.
5.9
Low Voltage Excitation On (LEO)
At a very low battery voltage, loading of the excitation coil is immediately induced by providing the maximum
excitation current (excitation PWM duty cycle set to 100%) at the excitation output stage, until a defined
threshold (VLOW) is achieved. This feature is called Low-Voltage Excitation On (LEO).
The enabling of the LEO function in normal mode depends on the NVM-LEOTIMERdis.
If the NVM-LEOTIMERdis = 1B, the LEO function is enabled immediately after the Normal Operation is entered.
If the LEO function gets activated, the excitation PWM duty cycle is set to 100%.
If the NVM-LEOTIMERdis = 0B, a timer is started when VBA exceeds VLOW
.
If VBA falls below VLOW while the timer is running, the timer is reset and starts to run as soon as VBA exceeds VLOW
again.
Data Sheet
32
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
If VBA stays above VLOW during the runtime of the timer, the LEO function is enabled when the timer expires after
tLEODEL
.
While LEO function is activated, the F-EL will be set with the respective debounce time, if NVM field NVM-
LEO_ERR_EN set to 1B.
While the LEO function is enabled, the regulation loop as well as any LRC ramp (Load Response Control
specified in Chapter 5.12) continue their regular operation in the background.
The behavior after deactivating the LEO function (VBA > VLOW) can be selected via NVM-LEOLRC. The TLE8881-
2 will set the LRC value to 100% DC , if NVM-LEOLRC = 0B, or stays at the actual value if NVM-LEOLRC = 1B.
LEO is not available for all states (refer to Table 9). For longer LEO periods the DC can be reduced for one PWM
period in order to conduct a current measurement as mentioned in Chapter 5.3.
Table 42 Parameter low-voltage excitation on
All parameters are valid for: -40°C < TJ < 150°C; unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
1)
LEO threshold
VLOW
8.25
8.75
9.15
V
V
V
V
V
V
V
;
P_6.10.0.1
NVM field NVM-
LEO = 000B;
1)
LEO threshold
LEO threshold
LEO threshold
LEO threshold
LEO threshold
LEO threshold
VLOW
VLOW
VLOW
VLOW
VLOW
VLOW
8.6
9
9.4
;
P_6.10.0.2
P_6.10.0.3
P_6.10.0.4
P_6.10.0.5
P_6.10.0.6
P_6.10.0.7
NVM field NVM-
LEO = 001B
1)
8.85
9.2
9.25
9.5
9.65
9.8
;
NVM field NVM-
LEO = 010B
1)
;
NVM field NVM-
LEO = 011B
1)
9.45
9.75
10
9.75
10.0
10.25
10.05
10.25
10.5
;
NVM field NVM-
LEO = 100B
1)
;
NVM field NVM-
LEO = 101B
1)
;
NVM field NVM-
LEO = 110B
Data Sheet
33
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Table 42 Parameter low-voltage excitation on (cont’d)
All parameters are valid for: -40°C < TJ < 150°C; unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
1)
LEO threshold
VLOW
10.3
10.5
10.7
V
;
P_6.10.0.8
NVM field NVM-
LEO = 111B
1)
LEO enable timer
tLEODEL
425
475
525
ms
;
P_6.10.0.1
0
(VBA > VLOW
)
If NVM-
LEOTIMERdis = 0B;
Timer initiated
after transition
from Pre-
Excitation to
Normal Operation
state
1) Not subject to production test, specified by design and functional test.
5.10
High Voltage Excitation Off (HEO)
At overshooting above a very high on-board power supply voltage level (VHIGH), the excitation output stage is
immediately disabled (lock to DMOS switch-off). As soon as the voltage level is below this threshold, the DMOS
lock is released (DMOS can switch-on and switch-off as requested by regulation loop). This feature is called
High-Voltage Excitation Off (HEO).
HEO is a safety feature to switch-off the excitation output stage at dangerous high voltage levels (e.g. caused
by load dump in the on-board power supply). This feature has the highest priority above all other functions
and is not available in all operation states (refer to Table 9).
The HEO threshold, VHIGH, is stated in Table 43.
The analogue HEO function can be activated/deactivated by NVM-HEO_ANdis. It is working independently
parallel to the regular HEO function. It is not displayed with a LIN flag.
Table 43 Parameter High Voltage Excitation OFF
All parameters are valid for: -40°C < TJ < 150°C; VBA=14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or Test Condition Number
Min.
Max.
1)
High-battery
VHIGH
16.1
16.5
16.9
V
P_6.11.0.1
voltage threshold
Data Sheet
34
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Table 43 Parameter High Voltage Excitation OFF (cont’d)
All parameters are valid for: -40°C < TJ < 150°C; VBA=14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or Test Condition Number
Min.
VHIGHan,en 16.4
Max.
Analogue HEO
activation voltage
threshold
17.4
18.7
V
V
Operating in parallel to P_6.11.0.2
digitally implemented
Over-Voltage
Excitationoff if NVM-
HEO_ANdis = 0B
Analogue HEO
deactivation
voltage threshold
VHIGHan,dis 16.3
17.4
18.6
Operating in parallel to P_5.11.0.1
digitally implemented
Over-Voltage
Excitationoff if NVM-
HEO_ANdis = 0B
1) Not subject to production test.
Data Sheet
35
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
5.11
Phase Signal Boost (PSB)
Phase Signal Boost (PSB) is an essential function to maintain a proper phase signal detection.
Conditions and behavior
The PSB is activated by default within the respective states (see Table 9). Deactivation will happen beyond
those states. Enabling and disabling conditions as well as the behavior of the PSB function is described in the
following.
The PSB function is activated if the upper peak voltage of VPH is below the upper deactivation level or the lower
peak voltage of VPH is above the lower deactivation level.
The PSB function is deactivated if the upper peak voltage of VPH is above the upper deactivation level and the
lower peak voltage of VPH is below the lower deactivation level.
If the PSB Function is activated the EXC output is set to 100% duty cycle for the PSB ON-time.
If the PSB Function is activated the EXC output is set to 0% duty cycle during the PSB OFF-time.
If the PSB function is active for longer than tPSB,ON+tPSB,OFF, a “PSB error” event (Trigger condition: PSB enabled
for longer than 1 PSB period) is emitted and an F-EL event is triggered (see Chapter 4.5).
For the prioritization of different functions and their availability in different states see Table 9.
Table 44 Parameter phase signal boost timer
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
1
Unit Note or Test Condition
Number
Min.
Max.
Minimum required
phase voltage level
for PSB activation
VPSB,on,min
0.4
1.3
V
V
PSB is enabled as soon as P_6.12.0.1
phase voltage level (VPH
goes below the specified
voltage level
)
Maximum required
phase voltage level
for PSB activation
VPSB,on,max 6.1
7
7.6
PSB is enabled as soon as P_6.12.0.2
phase voltage level (VPH
)
overshoots the specified
voltage level
1)
ON time for PSB
tPSB,ON
Typical Typ.
value - value value +
Typical ms
;
P_6.12.0.3
P_6.12.0.4
Typ. value depends on
NVM register NVM-
T_PSB_ON_MAX
1)
10%
253
10%
311
OFF time for PSB
tPSB,OFF
282
ms
1) Not subject to production test.
5.12
Load Response Control (LRC)
Load Response Control (LRC) prevents engine speed hunting and vibration due to electrical loads which cause
abrupt torque loading of the engine at lower speeds. This prevention is achieved by limiting the rise gradient
of the excitation PWM duty cycle at the output stage.
Data Sheet
36
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Duty cycle
[%]
(seen at output DMOS)
“Blind-zone“
DC + α
Blind-zone left
Æ LRC activated
(rising gradient)
DC
No LRC enabled
LRC active
No LRC enabled
No LRC enabled
Sample time [τ]
Figure 5
Principle of load response control
If the LRC function is disabled, the targeted Duty Cycle (DC) will be directly set to the regulator output value.
If the LRC function is enabled and the targeted DC of the internal regulator is higher than the sum of current
DC and LRC blind-zone value, the LRC function applies a rising gradient to the duty cycle of the excitation
Output Stage.
The LRC blind-zone restrains the application of the LRC function for a defined range of DC changes. This
prevents a continuous applied rise gradient of the DC especially for small DC changes and assures a better
dynamic behavior.
If the LRC function is enabled and the targeted DC of the internal regulator is lower than the subtraction of
current DC and LRC blind-zone value, the LRC function internally calculates a falling gradient which is not
applied to the excitation Output Stage and therefore not seen at the excitation DMOS. This internally
calculated falling gradient is used as the starting point for next re-application of a LRC rising gradient (e.g. the
targeted DC is higher than the sum of the current DC and the LRC blind-zone value). This assures a better
dynamic behavior.
Behavior of the LRC function after special conditions:
•
•
If the state of the IC is restored to normal operation after an inadvertent reset, the LRC value is set to 100%.
The behavior of the LRC function after an LEO event can be programmed by NVM-LEOLRC.
Once LEO is deactivated, the LRC value is set to 100% if NVM-LEOLRC = 0B or stays at the actual value if
NVM-LEOLRC = 1B
The principle of LRC and the LRC blind-zone is shown in Figure 5.
LRC rise-time (LRCRT)
The rising gradient is given by the LRC rise time (parameter LRCRT). This parameter can be configured via LIN
RX frames (RB in Data Byte 2, refer to Chapter 6.3.3) and in NVM via NVM-LRCRT for default operation. The
LRC rise-time is defined as the ramp-up time to go from 0% to 100% DC value, while the LRC function is
activated (nR < nLRCDIS and the positive DC change exceeds LRC blind-zone).
Data Sheet
37
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
LRC fall-time (LRCFT)
The falling gradient is given by the LRC fall time (parameter LRCFT). In contrast to LRCRT, this parameter can
only be configured in NVM via NVM-LRCFT. It is defined as the ramp down time to go from 100% to 0% DC
value, while the LRC function is activated (nR < nLRCDIS).
LRC blind-zone (LRCBZ)
The blind-zone is defined as the DC range, where the LRC function will not be activated. In case of a DC change
which is higher than the blind-zone value (in percent of current DC), the LRC function will be activated for this
DC change. This parameter can be configured via NVM-LRCBZ and NVM-LRCBZ_0_SEL.
Table 45 Parameter Load Response Control (LRC)
Parameter
Symbol
Values
Typ.
3%
Unit Note or Test Condition
Number
Min.
Max.
1)
Blind zone
BZdigital
3%
4%
-
-
-
;
P_6.13.0.1
NVM-LRCBZ= 0B and NVM-
LRCBZ_0_SEL= 0B
1)
Blind zone
Blind zone
BZdigital
6.25% 6.25% 8%
;
P_6.13.0.2
P_6.13.0.3
NVM-LRCBZ = 0B and NVM-
LRCBZ_0_SEL= 1B
1)
BZdigital
12%
12%
14%
;
NVM-LRCBZ = 1B
1) Not subject to production test. BZ is digitally implemented, so that the typical value can be targeted by design.
Tolerances are related to DC changes on the middle of the PWM on-time.
LRC disable speed (LRCDIS)
If the measured rotor speed is high, the applied engine torque can be strong enough to overcome speed-
hunting and vibration due to a DC change. Therefore, the LRC disable speed can deactivate the LRC depending
on the rotor speed, if nR > nLRCDIS
.
This parameter can be configured via LIN RX frames (RC in Data Byte 2) and for the default mode in NVM via
NVM-LRCDIS.
In summary, the LRC function is disabled in one or more of the following cases:
•
•
nR > nLRCDIS and TLE8881-2 register RLRCDIS is not 1111B.
TLE8881-2 register RLRCRT = 0000B.
If the LRC is enabled by change of the registers LRCRT or LRCDIS, the limitation value starts on the actual
excitation duty cycle value.
5.13
Frequency-dependent Excitation Current Limitation (FEXLIM)
Preventing higher torque loads especially for low temperature ranges as well as preventing heat-up due to
high current flow is an important protection feature. The Frequency-dependent Excitation Current Limitation
(FEXLIM) feature provides the possibility to adjust the limit of the excitation current depending on the
measured rotation speed of the alternator pulley.
The FEXLIM feature limits the excitation current by adjusting the permanent current limitation (PCLIM) values.
FEXLIM can operate in parallel to the excitation current limitation via LIN (Chapter 5.4), which limits the
excitation current by adjusting the RCLIM values (RCLIM register).
Data Sheet
38
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
By using the NVM bit field NVM-FEXLIM_EN in the EEPROM, the FEXLIM function can be enabled/disabled, see
Table 47.
FEXLIM feature is available for all device configurations (VDA-A, VDA-B, OEM2 and OEM1).
5.13.1
Parameters and limitation areas
The frequency dependent current limitation (FEXLIM) has 2 limitation areas separated by a speed-dependent
threshold. This threshold is stated in Table 48.
Table 46 Excitation current limitation values within the different limitation areas
Limitation area Conditions
PCLIM value
PCLIM1
Area 1
Area 4
nR < SLM
SLM < nR
PCLIM2
Figure 6 shows an overview of the limitation areas and the adjustment options.
Perm.
NVM-FEXLIM_PCLIM2
Excitation
Current Limits
[A]
Hysterisis SLM
(while RCLIM >
NVM-FEXLIM_PCLIM1
PCLIMx)
Hysterisis SLM
Speed [rpm]
SLM
Figure 6
Principle of frequency-dependent current limitation overview of FEXLIM limitation areas
and adjustment options (adjustments are red-highlighted, fixed values are black-
contrasting)
5.13.2
Function activation/deactivation
A dedicated switch in the NVM is provided to activate/deactivate the FEXLIM function, NVM-FEXLIM_EN.
Table 47 Activation/deactivation switch for FEXLIM function
Activation/deactivation
switch
Description
Behavior
NVM-FEXLIM_EN = 0B
Deactivate FEXLIM function
CLIM (Excitation Current Limitation) is
defined by the RCLIM register value via LIN
only.
NVM-FEXLIM_EN = 1B
Activate FEXLIM function
CLIM (Excitation Current Limitation) is
defined by the RCLIM register value via LIN
and by PCLIM via the FEXLIM feature.
5.13.3
FEXLIM vs. RCLIM register value
Beside the FEXLIM limitation values (as specified in Table 46 and Table 48), LIN commands can limit the
excitation current.
Data Sheet
39
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
The LIN RX frame rewrites the RCLIM register value. The RCLIM register is used for applying the CLIM (Excitation
Current Limitation) within the normal operation state (refer to Chapter 5.4). While in parallel operation with
FEXLIM, priorities have to be defined which actual limitation values will be used for CLIM.
Depending on the case, the following value for CLIM will be applied while RCLIM (≠0) is provided:
•
•
If FEXLIM is enabled and RCLIM < PCLIM (as defined in Table 48), then CLIM is applied by RCLIM.
If FEXLIM is enabled and RCLIM > PCLIM, then CLIM is applied by PCLIM (as defined in Table 48).
CLIM [A]
RCLIM1
PCLIM
RCLIM2
Time [s]
„RCLIM2“
sent via LIN
„RCLIM1“
sent via LIN
„RCLIM
disbaled“
sent via LIN
NVM-FEXLIM_EN = 0
NVM-FEXLIM_EN = 1
Figure 7
Priorities between FEXLIM and RCLIM
5.13.4
Transition behaviors
Smooth transition ramps between different PCLIM values or RCLIM values avoid hunting or vibration due to
torque changes.
Any change of the PCLIM value over a speed threshold (e.g. PCLIM1 to PCLIM2 due to SLM threshold) will be
handled by a smooth transition ramp, dtFSLOPE (static value of 0.375 A/s, refer to Table 48).
Receiving of a RCLIM value which is different to the previous set RCLIM value can interrupt the transition ramp:
•
Positive transition slopes (transition from a lower to a higher limitation value) are interrupted if a new
RCLIM value is received. The new CLIM value to be adjusted for current limitation is defined by the static
condition as described in Chapter 5.13.3 (The CLIM value is defined by the RCLIM value, if RCLIM < PCLIM,
or the CLIM value is defined by PCLIM, if RCLIM > PCLIM).
•
Negative transition slopes (transition from a higher to a lower limitation value) are interrupted if a new
RCLIM value is received which is lower than the transient PCLIM value (current value on the transition
ramp). The new CLIM value is defined by the received RCLIM value.
Note: “New RCLIM” refers to a RCLIM value received via an RX LIN-Frame which is different to the RCLIM value
received by an earlier RX LIN-Frame.
If the state machine transfers from the normal to the default operation state and NVM-FEXLIM_EN = 0B
(FEXLIM function deactivated), a smooth transition ramp, dtFSLOPE, from the last CLIM value to “no current
limitation” (CLIM disabled) will be applied.
5.13.5
Function characteristics
Table 48 provides all related characteristics of the FEXLIM function.
Data Sheet
40
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
Table 48 FEXLIM characteristics
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified.
All parameter are not subject to production tests.
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min. Typ.
Max.
Excitation current PCLIM1
limitation for lower
speed range
–
–
–
NVM-FEXLIM_PCLIM1
NVM-FEXLIM_PCLIM2
3400
–
A
–
P_6.14.5.3
Excitation current PCLIM2
limitation for
higher speed range
–
–
A
–
P_6.14.5.4
P_6.14.5.7
Speed threshold
SLM
SLM
rpm Dependent on
hysteresis. Actual
value is
SLM ± ΔSLM
Hysteresis SLM
Transition ramp
ΔSLM
–
–
150
–
–
rpm
P_6.14.5.1
0
dtFSLOPE
0.375
A/s Slope between
PCLIM1, PCLIM2.
VDA-A / VDA-B /
OEM1 / OEM2
P_6.14.5.1
2
variants.
5.13.6
Behavior with restore state function
In case of a restore state event (occurred due to micro-cut), the last PCLIM value can be restored. However, if
micro-cuts occur during the drive of a transition slope, the targeted PCLIM value will be restored by the restore
state function. An exemplary behavior is represented in Figure 8.
„Micro-cut“
VBA [V]
PCLIM [A]
Transition ramp
PCLIM1
PCLIM2
Time [s]
„nR > SLM“ event
Figure 8
Example of the behavior of FEXLIM on restore state event
Data Sheet
41
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
5.14
Regulation parameters control via LIN (F-Para function)
The TLE8881-2 makes use of a full digital PI regulator to control the excitation output stage. Both the Ki and
the Kp parameter are significant factors for the regulation dynamic.
Since the regulation dynamic may change depending on the application circumstances, the TLE8881-2 offers
functionalities to change the set of regulation parameters.
The TLE8881-2 offers the F-Para functionality for switching from the normal KiKp setting to a previously
selected regulation parameter set by setting a dedicated bit in the LIN RX frame. As long as that LIN bit is set,
the PI regulator uses that pre-selected set of Ki and Kp factors. As soon as the LIN bit is reset, the default Ki and
Kp factors are used again. The pre-selection is adjusted by the NVM field NVM-RPARA_SEL.
The pre-selection offers the possibility to either adjust a lower regulation dynamic or to not change the
regulation dynamic.
The pre-selected regulation parameter can be activated by the ECU via LIN data field RH in the LIN RX frame
(Chapter 6.3.3).
5.15
Speed-dependent KiKp parameter sets (KiKp function)
The TLE8881-2 allows to use different regulation KiKp parameter sets for the regulation of the EXC duty cycle
dependent on the rotation speed nR of the alternator.
The device provides 4 different KiKp parameter sets fixed which can be selected:
•
•
•
•
“Normal” (default parameter)
“slow”
“slower”
“slowest”
The name of the parameter sets is derived from the reaction speed of the regulation.
The behavior of the function is configured by the parameter NVM-KiKp. This is shown in Table 49.
Table 49 Configuration of KiKp function
Configuration switch
NVM-KiKp= 00B
Description
KiKp function disabled
NVM-KiKp = 01B
NVM-KiKp = 10B
NVM-KiKp = 11B
Simple KiKp function with KiKp set to “slowest”
Simple KiKp function with KiKp set to “slower”
3-stage KiKp function
The function can be operated as a simple KiKp function or a 3-stage KiKp described in Figure 9 and Figure 10
Regelution
KiKp active
Slower or
slowest
Nswitch1
N[RPM]
Figure 9
Simple KiKp function
Data Sheet
42
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
KiKp active
Regulation
normal
slow
slower
slowest
Nswitch1
Nswitch2
Nswitch3
N[RPM]
Figure 10 3-stage KiKp function
The selection of the different KiKp parameter sets is done based on the rotation speed nR. The function allows
up to 3 different speed thresholds Nswitch1.... Nswitch3.
These thresholds can be selected by the parameter NVM-Speed_TH(see Table 50). The table shows the upper
threshold and the lower threshold for the implemented hysteresis.
The change of the used KiKp parameter set is triggered by a KiKp Nswitch event. The criteria for this event are
shown in Table 51.
Table 50 Selection of Nswitch speed thresholds1)
NVM-Speed_TH
000B
Nswitch1 [rpm]
2000 / 1800
2200 / 2000
2400 / 2200
2600 / 2400
2800 / 2600
3000 / 2800
3200 / 3000
3400 / 3200
Nswitch2 [rpm]
2400 / 2200
2600 / 2400
2800 / 2600
3000 / 2800
3200 / 3000
3400 / 3200
3600 / 3400
3800 / 3600
Nswitch3 [rpm]
2800 / 2600
3000 / 2800
3200 / 3000
3400 / 3200
3600 / 3400
3800 / 3600
4000 / 3800
4200 / 4000
001B
010B
011B
100B
101B
110B
111B
1) 2000 / 1800 rpm represent the upper and lower value of the hysteresis
Table 51 KiKp Nswitch events and conditions
Event
Description
Set condition
(event is
Clear condition
(event is cleared)
generated)
“KiKp Nswitch”
event
Event used to trigger the selection of the
KiKp parameter sets
3 consecutive
3 consecutive
measurements with measurements with
nR > Nswitch nR < Nswitch
(upper threshold of (lower threshold of
hysteresis) hysteresis)
If the F-Para function is not active (set to 0 in the LIN-RX frame) and the KiKp function is activated in NVM-KiKp,
the KiKp parameters requested by the KiKp function are applied.
Data Sheet
43
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
If the F-Para function is not active (set to 0 in the LIN-RX frame) and the KiKp function is not activated, the
normal regulation parameters are applied.
If the F-Para function is active (set to 1 in the LIN-RX frame), the parameters requested by the F-Para function
are applied.
5.16
Voltage-dependent KiKp function (VoKiKp function)
In order to avoid slow reaction of the IC on relatively high VBA voltages compared to VSET, especially if slow
KiKp parameter sets are chosen, the TLE8881-2 offers a voltage-dependent KiKp function (VoKiKp).
The function and its parameters can be selected by the NVM parameter NVM-VoKiKp shown in Table 52
Table 52 Configuration of VoKiKp function
NVM-VoKiKp
000B
VoKiKp up threshold
VoKiKp disabled
0.35 V
VoKiKp down threshold
001B
0.25 V
010B
0.5 V
0.4 V
011B
0.65 V
0.55 V
100B
0.8 V
0.7 V
101B
+/- 0.5 V
+/- 0.4 V
+/- 0.65 V
+/- 0.9 V
110B
+/- 0.75 V
+/- 1 V
111B
If the VoKiKp function is active, it overrules the KiKp parameter set selection performed by the F-Para function
or the KiKp function and forces the IC to use the KiKp parameter set “Normal”.
The activation and deactivation of the function is shown in Figure 11.
The function is activated if VBA is higher than VSET + VoKiKp up threshold and deactivated if VBA is lower than
VSET + VoKiKp down threshold. For the values 101B, 110B and 111B the function is also activated if VBA is lower
than VSET - VoKiKp up threshold and deactivated if VBA is higher than VSET - VoKiKp down threshold.
VBa
Measured
voltage
VoKiKp_up
VoKiKp_ down
Vset
t
t
VoKiKp_active
Figure 11 Voltage-dependent activation and deactivation of the VoKiKp function.
Data Sheet
44
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
The VoKiKp function is deactivated as well if the rotation speed is high. The deactivation threshold depends
on the KiKp configuration (Table 49).
If the simple KiKp function is used or if the KiKp function is disabled, the VoKiKp function is deactivated if
nR > Nswitch1.
If the three stage KiKp function is used the VoKiKp function is deactivated if nR > Nswitch3.
The speed dependence of the VoKiKp function can be activated/deactivated by the NVM parameter NVM-
VoKiKp_low_HEO_speed.
Data Sheet
45
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Regulation functions
5.17
Speed-dependent lowering of the HEO limit (LowHEO function)
In order to optimize the reaction to high VBA voltages in case of a low rotation speed, the TLE8881-2 offers a
function to lower the HEO limit. This function is called LowHEO function.
The function and its parameters can be selected by the NVM parameter NVM-LOW_HEO shown in Table 53
Table 53 Configuration of the lowHEO function
NVM-LOW_HEO
LowHEO voltage VLowHEO
00B
01B
10B
11B
15.5 V
15.65 V
15.75 V
LowHEO function disabled (default HEO 16.5 V used)
If the rotation speed nR is lower than Nswitch1, the HEO limit is reduced to the preconfigured value set in the
NVM parameter NVM-LOW_HEO.
In this situation, the VSET voltage is limited to the lower HEO limit -500 mV.
The LowHEO function will trigger the F-EL diagnostic flag if nR < Nswitch1 and the battery voltage is higher than
the LowHEO voltage.
The speed dependence of the LowHEO function can be activated/deactivated by the NVM parameter NVM-
VoKiKp_low_HEO_speed. If the speed dependence is disabled, NVM-LOW_HEO is applied for all rotation
speeds.
For example, if the lower HEO limit is set to 15.5 V, the VSET voltage is limited to 15 V.
This function is shown in Figure 12.
HEO voltage
16.5V
Low-HEO
Nswitch1
N[RPM]
Figure 12 Speed-dependent lowering of the HEO limit
Data Sheet
46
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6
LIN interface
The protocol of the TLE8881-2 communication interface is implemented as LIN bus according to the LIN (Local
Interconnect Network) specification. The physical layer is implemented according to the standard LIN 2.1
specification. The physical layer specification LIN 2.1 is a super set of previous LIN specifications, such as
versions of LIN 2.0 or LIN 1.3.
The TLE8881-2 is qualified according to LIN 2.1 on the physical layer. Conformance test results are available
on request.
The data link layer is implemented according to LIN 1.3 as well as LIN 2.1 specification (selectable via NVM-
LIN).
The data exchange via the serial bi-directional LIN bus line follows the master-slave-principle, where the
engine management ECU or the energy management ECU is arranged as master (LIN 1.3, or LIN 2.1) and the
TLE8881-2 is designed as a slave node.
6.1
Bus topology
The LIN bus line is connected to the LIN terminal of the TLE8881-2 and to any driver/receiver of the bus
connection. VSUP is an internal voltage and supplies the pull-up resistor of the LIN bus line. This voltage is used
for the definition of the voltage thresholds. A polarity protection diode between VSUP and VBA is described in
the LIN standard and may be implemented in the LIN master. The TLE8881-2 uses an active polarity protection
diode which is shorted in operational mode. Therefore, VSUP is more or less equal to VBA
.
While in stand-by mode a wake-up circuitry detects signal pulses on the LIN bus line. If a pulse fulfills the wake-
up pulse requirement, the TLE8881-2 will leave the stand-by mode and changes to ComActive state.
The LIN terminal of the TLE8881-2 is protected against short circuit to the GND terminal or VBA terminal. The
LIN driver is protected against overload.
Battery shift voltage
(specified in LIN 2.1 PL)
VBA
VBA
´
Alternator IC - LIN 1.3/2.1 Slave
(acc. to LIN 2.1 PL Spec)
ECU - LIN 1.3/2.1 Master
Closed when
not in Stand-By
VSUP
VSUP,Master
LIN-Tranceiver
INH
LIN
Edge
detection
RLIN
1kΩ
LIN-RXD
ILIN
LIN-BUS
LIN
RXD
TXD
Wake-up
filter
CLIN
VLIN
VLIN
LIN-TXD
Internal logic
GND
GND
´
Ground shift voltage
(specified in LIN 2.1 PL)
Other LIN Slaves
(second alternator)
Figure 13 LIN bus configuration
Data Sheet
47
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6.2
Signal specification (physical layer)
The transferred data bits are encoded with the value ‘0’ (dominant level, bus line is clamped to GND) or ‘1’
(recessive, bus voltage is near to VBA). For a correct transmission of a bit the bus voltage must be on the
respective voltage level (dominant or recessive) at the bit sampling time of the receiver. Propagation delays
as well as slew rates according the LIN specification have to be considered (refer to Figure 14).
TBIT
TBIT
TBIT
LIN-TXD
t
Voltage drop over the
diodes in pull-up path
VLIN
tBus_rec
VBAT
VSUP
Recessive
0,6 x VSUP
0,4 x VSUP
VLIN,d2r
VLIN,cnt
VLIN,r2d
Dominant
GND
t
t
tBus_dom
LIN-RXD
tRXPDF
tRXPDR
Figure 14 LIN signal specification
The LIN bus communication speed (within the specified limits) is automatically detected by the receiver using
the Synch Byte of the header (for LIN 1.3 and for LIN 2.1). In addition to the associated start bit and stop bit,
the Synch Byte is coded as 55H (refer to Figure 15).
The falling curve of the bus voltage VLIN (bit change from recessive to dominant) is mainly dependent on the
driver implementation, while the rising curve of the bus voltage (bit change dominant to recessive) depends
on the bus time constant tLIN = RLIN x CLIN. The bus time constant, tLIN, has to be between 1 μs and 5 μs.
RLIN is the overall network impedance and its value is depending on the number of bus nodes. Because the
number of nodes should not exceed a maximum of 16, the minimum value is never below RLIN = 500 Ω. CLIN is
the overall network capacitance and must not exceed 10 nF.
CLIN is the overall network capacity and consists of the master capacity, slave node capacities as well as bus
wire length.
For more details concerning the bus line timing and characteristics, refer to the LIN 2.1 specification.
Data Sheet
48
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 54 Parameter LIN signal characteristics
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified:
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min.
Typ. Max.
Receiver input
VLIN
-3
–
40
V
Negative voltages could occur in P_7.2.0.1
voltage for proper
communication
case of ground shift between
master and slave1)
Bit period
TBIT
51
50
–
423
μs
For LIN master: communication P_7.2.0.2
speed between 2400 bit/s and
19200 bit/s (master clock
tolerance ± 0.5%)
Bit period
TBIT
–
432
–
μs
For TLE8881-2 slave node:
maximum clock tolerance for
communication between master
and slave after synchronization
is ± 2%
P_7.2.0.3
Interbyte delay in
response
tBDEL
–
0
–
μs
μs
TLE8881-2 is sending the
response immediately
P_7.2.0.4
Bus dominant time tSYNBRK 13x TBIT
for the synch-break
TBIT is the bit time ascertained in P_7.2.0.5
the synch-byte. Only whole-
numbered (integer) multiples of
T
BIT are applicable.
ms tLINIDLE
(25k x TBIT @ 19200 bit/s)
Bus idle time-out
tLINIDLE
–
1300 –
P_7.2.0.6
only used for LIN 2.1
conformance test
Internal voltage for VSUP
bus pull-up resistor
supply
VBA -1 V
–
–
VBA
V
V
1); maximum voltage drop
(current dependent) on internal
polarity protection diode is 1 V
P_7.2.0.7
P_7.2.0.8
Receiver voltage
threshold for
VLIN,r2d
0.4x
VSUP
–
LIN 2.1 Param 17 (Figure 6.2)
LIN 2.1 Param 18 (Figure 6.2)
LIN 2.1 Param 19 (Figure 6.2)
bit recessive to bit
dominant detection
Receiver voltage
threshold for
VLIN,d2r
–
–
0.6x
VSUP
V
P_7.2.0.9
bit dominant to bit
recessive detection
Receiver center
voltage
VLIN,cnt
0.475x 0.5x 0.525x
VSUP
V
P_7.2.0.10
P_7.2.0.11
P_7.2.0.12
P_7.2.0.13
VSUP VSUP
Receiver hysteresis VLIN,hys
0.07x
VSUP
0.1x 0.175x
VSUP VSUP
V
VLIN,hys = VLIN,d2r - VLIN,r2d
LIN 2.1 Param 20
LIN wake-up
VLINWK
0.4x
VSUP
–
0.6x
VSUP
V
–
–
threshold voltage
Bus dominant time tLINWK
30
–
150
μs
for LIN wake-up
Data Sheet
49
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 54 Parameter LIN signal characteristics (cont’d)
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V, unless otherwise specified:
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min.
Typ. Max.
Bus current
ILINMAX
40
–
200
mA In full VBA range;
P_7.2.0.14
limitation for
dominant stat
LIN 2.1 Param 12
Bus leakage current ILINLEAK -1
–
–
mA LIN-TXD = 1
P_7.2.0.15
(pull-down driver off),
V
LIN = 0 V, VBA = 12 V
LIN 2.1 Param 13
Bus leakage current ILINLEAK -1
(loss of ground)
–
–
–
1
mA VLIN = -18 V to 0 V
P_7.2.0.16
P_7.2.0.17
P_7.2.0.18
GND open on TLE8881-2;
LIN 2.1 Param 15
Bus leakage current ILINLEAK
(loss of battery)
–
–
20
20
μA VLIN = 0 V to 18 V
VBA open on TLE8881-2;
LIN 2.1 Param 16
Bus leakage current ILINLEAK
μA VLIN = 8 V to 18 V
(driver off)
VBA = 8 V to 18 V
VLIN > VBA
LIN 2.1 Param 14
Voltage drop on
serial diode in pull up
resistor path
VLINDPU 0.4
–
1
V
VBA = 6 V to 18 V,
P_7.2.0.19
V
LIN = 2 V
Pull-up resistor for
LIN slave node
RLIN,Slave 20
30
–
60
kΩ LIN 2.1 Param 26
P_7.2.0.20
P_7.2.0.21
P_7.2.0.22
P_7.2.0.23
P_7.2.0.24
P_7.2.0.25
P_7.2.0.26
P_7.2.0.27
P_7.2.0.28
1)
Internal capacity for CLIN.Slave 10
LIN slave node
80
pF
LIN 2.1 Param 37
1) 2) 3)
LIN bus duty cycle
D1 for 20 kbit/s
DCLIN
DCLIN
DCLIN
DCLIN
tRXPDR
tRXPDF
dtRXPD
0.396
–
–
–
LIN 2.1 Param 27
1) 2) 4)
LIN bus duty cycle
D2 for 20 kbit/s
–
–
0.581
–
LIN 2.1 Param 28
1) 2) 5)
LIN bus duty cycle
D3 for 10.4 kbit/s
0.417
–
–
LIN 2.1 Param 29
1) 2) 6)
LIN bus duty cycle
D4 for 10.4 kbit/s
–
–
0.590
LIN 2.1 Param 30
7)
Rising receiver
propagation delay
–
–
6
6
2
μs
LIN 2.1 Param 31
7)
Falling receiver
propagation delay
–
–
μs
LIN 2.1 Param 31
7)
Receiver
-2
–
μs
propagation delay
symmetry (rising
edge versus falling
edge)
LIN 2.1 Param 32
Data Sheet
50
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1) Not subject to production test.
2) Bus loading conditions (CLIN;RLIN) = (1 nF;1 kΩ), (6.8 nF;660 Ω) and (10 nF;500 Ω). For signal specification, refer to
Figure 14 “LIN signal specification” on Page 48.
3) VLIN,d2r = 0.744x VSUP, VLIN,r2d = 0.581x VSUP, VSUP = 7 V to 18 V, TBIT = 50 μs
4) VLIN,d2r = 0.284x VSUP, VLIN,r2d = 0.422x VSUP, VSUP = 7.6 V to 18 V, TBIT = 50 μs
5) VLIN,d2r = 0.778x VSUP, VLIN,r2d = 0.616x VSUP, VSUP = 7 V to 18 V, TBIT = 96 μs
6) VLIN,d2r = 0.389x VSUP, VLIN,r2d = 0.251x VSUP, VSUP = 7 V to 18 V, TBIT = 96 μs
7) Wafer Test only
6.3
Message frames (data link layer)
The TLE8881-2 can communicate with both a LIN 2.1 and a LIN 1.3 master. This is realized by implementing
calculations for both a classic checksum and an enhanced checksum. The selection of the supported LIN
protocol can be adjusted via NVM-LIN.
Note: For backward compatibility reasons, a LIN 2.1 master is able to communicate with a LIN 1.3 slave but not
vice versa. This backward compatibility is assured by the fact that the TLE8881-2 is designed according to
LIN 2.1 on the physical layer, as recommended by the LIN consortium. Thus, and due to the NVM field
switch, the TLE8881-2 can communicate with a master specified according to both LIN 2.1 as well as LIN
1.3.
Every data transfer is initiated from the master by sending a header. This header contains a synch-break field,
a synch byte and a frame identifier byte (ID Byte, or labeled as Protected Identifier in the LIN 2.1 specification).
The frame identifier byte defines the response which is sent by the master or the slave immediately after the
LIN frame header. The response contains 1 to 8 data bytes as well as one checksum byte at the end of the LIN
frame. In the communication protocol of the TLE8881-2 only 2, 4 and 8 data bytes are defined as valid
responses.
Except for the synch-break field, LIN frames are byte-oriented so that the LIN specification allows a delay
between bytes (interbyte delay). Every byte in a single LIN frame is composed of a start bit, 8 data bits and one
stop bit. The bits are encoded with the value ‘0’ (dominant) or ‘1’ (recessive). In a bit stream of one data byte,
the least significant bit (lsb) is indicated as the first arriving bit on the LIN bus, whereas the most significant bit
(msb) is the last bit, respectively.
Figure 15 shows a complete LIN frame for an identifier using 4 data bytes in the response field. The synch-
break field re-initializes the receiver and marks the start of a new LIN frame in any case.
Data Sheet
51
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
LIN Frame
Response - sent from Master (=ECU) or Slave (=Alternator Control IC)
Data1 Field Data2 Field Data3 Field Data4 Field Checksum Field
Header - sent from Master (=ECU)
Synch-Break
Synch Field
ID Field
lsb
ID0 ID1 ID2 ID3 ID4 ID5 P0
msb
P1
0
1
Synchronization
delimiter (tSYNDEL
Interbyte space
Frame Identifier Byte (= 00H to FFH
)
)
ID Field
lsb
S0
msb
lsb
D0
msb
D7
0
S1
S2
S3
S4
S5
S6
S7
1
0
D1
D2
D3
D4
D4
D6
1
Synch Byte (= 55H
)
Data Byte (= 00H to FFH
)
Synch Field
Data Field - Data 1,2,4 or 8
tSYNBRK
lsb
msb
C7
0
C0
C1
C2
C3
C4
C5
C6
1
Checksum Byte (= 00H to FFH
)
Synch-Break (min. 13x 0B)
Checksum Field
Figure 15 LIN frame
If the bus is idle (recessive) for more than tLINIDLE, the receiver is re-initialized. That means that the
synchronization delimiter or any interbyte space must not exceed tLINIDLE of 25.000 bit times of 19200 baud,
which is 1300 ms. Otherwise the frame is lost.
The TLE8881-2 sends its response immediately after the identifier and it will not generate any delay between
bytes in the response field (which results in no interbyte space).
6.3.1
LIN frame structure
Frame identifier byte / protected identifier
On principle, the LIN frame identifier byte (also know as the frame identifier field, or ID field) consists of 6
identifier bits plus 2 parity bits. The coverage of having no pattern with all bits recessive or dominant can be
guaranteed by the 2 parity bits inside the frame identifier field (ID field). The first parity bit is calculated by the
XOR-concatenation between ID bits as indicated in Equation (6.1).
(6.1)
P0 = ID0 ⊕ ID1 ⊕ ID2 ⊕ ID4
The second parity bit is computed by the inverse XOR-concatenation between ID bits as indicated in
Equation (6.2).
(6.2)
P1 = ID1 ⊕ ID3 ⊕ ID4 ⊕ ID5
Thus, the frame identifier byte never consists of 0’s or 1’s only and can be distinguished easily from the synch-
break.
Data Sheet
52
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Checksum byte
For the LIN 1.3 data link layer (EEPROM field NVM-LIN = 1B), a classic checksum calculation is used which
means inverting the sum of modulo 256 (with carry) of all data bytes. An eight bit sum with carry is equivalent
to the sum of all values from which 255 is substracted every time the sum is greater, or equal to 256.
For the LIN 2.1 data link layer (EEPROM field NVM-LIN = 0B), an enhanced checksum calculation is used which
additionally includes the Protected Identifier Field (Identifier Byte including parity bits) in the sum of all data
bytes.
According to the LIN specification, if the ID field is 3CH or 3DH, the classic checksum calculation will always be
used.
Examples for checksum calculation are given in the respective LIN specification documents.
Data byte
Every LIN frame is named with a unique symbol, starting with “R” for received frames (from the LIN master,
also called request frames) and starting with “T” for transmitted frames (from the LIN master, also called
response frames). The “P” indicates fields or frames only used if test mode is active.
TLE8881-2 supports the following data byte structures which can be chosen in NVM via NVM-CFG:
•
•
•
•
VDA-A variant
VDA-B variant
OEM1 variant
OEM2 variant
6.3.2
LIN frame identifier recommendations
The TLE8881-2 supports the flexible configuration of the LIN Frame Identifiers. The identifiers can be
configured via an EEPROM configuration of the fields NVM-LINRX, NVM-LINTX1, NVM-LINTX2, NVM-LINTX3
(refer to Chapter 9.2.1). Table 55 provides recommended examples of the EEPROM configuration for
reference purposes. Since the parity can be calculated via Equation (6.1) and Equation (6.2), the EEPROM
configuration excludes the parity bits from the resulting byte.
The LIN identifier for diagnostic frames is ignored for LIN 1.3 (NVM-LIN =1B) if NVM-3Ddis= 1B. If the TLE8881-
2 is configured for LIN 2.1 (NVM-LIN=0B), it will send the specified response (see Chapter 6.7).
The frames NVM-LINTX1, NVM-LINTX2 and NVM-LINTX3 can be deactivated by programming the frame ID in
the NVM to 0x3C. The TLE8881-2 will not answer to the TX frames and respond to 0x3C with the 0x3C diagnostic
frame.
Table 55 LIN frame identifier
TLE8881-2 Symbol /
Identifier byte
Identifier bits
Byte Bit Bit Bit Bit Bit Bit P0 P1
Data bytes
config-
uration
comment
Parity
Result Length Sent by
byte
0
1
2
3
4
5
All1)
Diagnostic
3CH
0
0
1
1
1
1
0
1
0
0
3CH
8
Master
frame (sleep
command /
programming)
All
Diagnostic
frame 2)
3DH
1
0
1
1
1
1
7DH
8
TLE8881-2
Data Sheet
53
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 55 LIN frame identifier (cont’d)
TLE8881-2 Symbol /
Identifier byte
Identifier bits
Byte Bit Bit Bit Bit Bit Bit P0 P1
Data bytes
config-
uration
comment
Parity
Result Length Sent by
byte
0
1
1
0
1
0
1
0
0
1
-
1
0
0
1
0
1
1
0
1
0
-
2
0
0
0
1
0
0
1
1
0
-
3
1
0
0
0
1
0
0
0
1
-
4
0
1
1
1
0
1
1
1
0
-
5
1
0
0
0
1
0
0
0
1
-
VDA-A
config for
regulator #1
RX3)
TX1
29H
11H
12H
15H
2AH
13H
14H
16H
29H
-
1
0
0
1
1
1
0
1
1
-
1
0
1
0
0
1
0
1
1
-
E9H
11H
92H
55H
6AH
D3H
14H
D6H
E9H
-
4
2
2
4
4
2
2
4
4
Master
TLE8881-2
TLE8881-2
TLE8881-2
Master
TX2
TX33)
RX3)
TX1
VDA-A
config for
regulator
#24)
TLE8881-2
TLE8881-2
TLE8881-2
Master
TX2
TX33)
RX3)
TX1
OEM1 /
VDA-B
config for
regulator #1
-
TX2
12H
15H
2AH
-
0
1
0
-
1
0
1
-
0
1
0
-
0
0
1
-
1
1
0
-
0
0
1
-
0
1
1
-
1
0
0
-
92H
55H
6AH
-
2
4
4
TLE8881-2
TLE8881-2
Master
TX33)
RX3)
TX1
OEM1 /
VDA-B
config for
regulator
#24)
-
TX2
TX33)
14H
16H
0
0
0
1
1
1
0
0
1
1
0
0
0
1
0
1
14H
D6H
2
4
TLE8881-2
TLE8881-2
OEM2
config for
regulator #1
RX3)
TX1
29H
-
1
-
0
-
0
-
1
-
0
-
1
-
1
-
1
-
E9H
-
4
Master
-
TX2
-
-
-
-
-
-
-
-
-
-
-
TX33)
RX3)
TX1
21H
2AH
-
1
0
-
0
1
-
0
0
-
0
1
-
0
0
-
1
1
-
1
1
-
0
0
-
61H
6AH
-
4
4
TLE8881-2
Master
-
OEM2
config for
regulator
#24)
TX2
TX33)
TLE88815) RX3)
-
-
-
-
-
-
-
-
-
-
-
22H
20H
15H
21H
18H
2AH
13H
11H
16H
0
0
1
1
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
1
0
0
0
0
0
1
0
0
0
0
1
1
0
0
0
0
0
1
0
1
0
1
1
1
1
1
0
1
0
1
0
0
0
1
0
1
1
1
1
1
0
1
1
0
0
0
1
0
1
0
1
E2H
20H
55H
61H
D8H
6AH
D3H
11H
D6H
4
4
2
2
4
4
2
2
4
TLE8881-2
Master
TLE8881-2
TLE8881-2
TLE8881-2
Master
TLE8881-2
TLE8881-2
TLE8881-2
config for
TX1
regulator #1
TX2
TX33)
RX3)
TLE8881
config for
regulator
#24)
TX1
TX2
TX33)
1) The sleep mode command (ID byte = 3CH, data byte 1 = 00H) is only accepted by the TLE8881-2 in the states
“ComActive” and “pre-excitation”.
2) LIN identifier ignored for LIN 1.3 (NVM-LIN = 1B AND NVM-3Ddis = 1B). LIN identifier responded by TLE8881-2 for LIN
2.1 (NVM-LIN = 0B).
Data Sheet
54
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
3) These frames are also used for test purposes and NVM programming.
4) For the use in LIN networks with two alternators.
5) The TLE8881-2 can be configured to have the same LIN ID as the legacy product TLE8881. For the same operation as
the TLE8881, the NVM configuration has to be adapted to match the TLE8881 configuration.
6.3.3
LIN RX frame
This chapter describes the content of the different LIN RX frames (request/command from the LIN master to
the TLE8881-2). The mapping between the LIN frame content and the internal register assignments is
described in Chapter 6.4.
Except in case of a test mode entry detection, all bits in the frame RX which are not covered by any information
field are ignored by the TLE8881-2.
first data bit (after LIN ID)
last data bit (before checksum)
Frame RX (Master to Alternator Control IC)
data byte 1
data byte 2
data byte 3
data byte 4
LIN frame Data Byte
0
1
1
2
2
3
4
5
5
6
6
7
7
0
0
1
2
3
3
4
0
5
6
7
3
0
0
1
1
2
2
3
4
5
5
6
6
7
7
0
0
1
RE [2:0]
1
2
2
3
RF
0
4
5
RG [2:0]
1
6
7
RH
0
Bit in LIN frame Data Byte
Information field symbol
Bit in information field
RA [7:0]
RB [3:0]
RC [3:0]
RD [7:0]
0
3
4
1
2
1
2
3
4
0
2
LSB
MSB LSB
MSB LSB
MSB LSB
MSB LSB
MSB LSB LSB
MSB LSB
Figure 16 Frame RX
Table 56 Information fields of the frame RX
Symbol
Bits Description
TLE8881-2 register
RA
8
Regulation voltage setpoint for VDA-A and OEM2 variants
RVSET[7:2] := RA[5:0]
RVSET[1:0] := 00B
Regulation voltage setpoint for VDA-B and OEM1 variants
LRC rise time (positive gradient)
RVSET[7:0] := RA[7:0]
RLRCRT[3:0]
RB
RC
RD
4
4
8
LRC disable frequency
RLRCDIS[3:0]
Excitation current limitation for VDA-A variant
RCLIM[4:0] := RD[4:0]
RCLIM[7:5] := 000B
Excitation current limitation for VDA-B and OEM1 variants
Excitation current limitation for OEM2 variant
RCLIM[6:0] := RD[7:1]
RCLIM[7:0] := RD[7:0]
RDI[2:0] := RE[2:0]
RE
3
Response data indicator for OEM1, VDA-A and VDA-B and
variants (Chapter 6.4.7)
Response data indicator for OEM2 variant (Chapter 6.4.7)
RE[2:0] reserved1)
RDI[2:0] := 000B
RF
1
3
LRC blind zone for OEM1, VDA-A and VDA-B variants
LRC blind zone for OEM2 variant
RLRCBZ := RF
RF ignored
(NVM-LRCBZ is used)
RG
Offset of the threshold for the high temperature regulation RHT[2:0] := RG[2:0]
for OEM1, VDA-A and VDA-B variants
Offset of the threshold for the high temperature regulation RG[2:0] ignored
for OEM2 variant
(RHT[2:0] := 000)
RH
1
Activation of F-Para function (Chapter 5.14).
FPARA := RH
1) Used for Test Mode
Data Sheet
55
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6.3.4
LIN TX1 frame
The chapter describes the content of the LIN TX1 frame (information response from the TLE8881-2 to the LIN
master). The mapping between the LIN frame content and the internal register assignments in described in
Chapter 6.4.
Frame TX1 (Alternator Control IC to Master)
data byte 1
data byte 2
LIN frame Data Byte
0
1
2
3
4
1
5
TD [4:0]
2
6
3
7
0
1
1
2
3
4
4
5
6
7
Bit in LIN frame Data Byte
Information field symbol
Bit in information field
TA TB TC
TE [5:0]
TF TG
0
0
0
0
4
0
2
3
5
0
0
LSB LSB LSB LSB
MSB LSB
MSB LSB LSB
first data bit (after LIN ID)
last data bit (before checksum)
Figure 17 Frame TX1
Diagnosis flags F-HT, F-ROT, F-EL, F-CEF and F-CTO mentioned in Table 57 are described in Chapter 4.5.
Table 57 Information fields of the frame TX1
Symbol
TA
Bits
1
Description
TLE8881-2 register
Diagnosis flag
Diagnosis flag
Diagnosis flag
RDC[4:0]
Diagnosis flag F-HT (high temperature indication flag)
Diagnosis flag F-ROT (mechanical abnormality flag)
Diagnosis flag F-EL (electrical abnormality flag)
Duty cycle value of the excitation PWM (field monitoring)
Measured excitation current
TB
1
TC
1
TD
5
TE
6
RMC6[5:0]
TF
1
Diagnosis flag F-CEF (LIN communication error flag)
Diagnosis flag F-CTO (LIN communication time-out flag)
Diagnosis flag
Diagnosis flag
TG
1
6.3.5
LIN TX2 frame
The chapter describes the content of the LIN TX2 frame (information response from the TLE8881-2 to the LIN
master). The mapping between the LIN frame content and the internal register assignments in described in
Chapter 6.4.
Frame TX2 (Alternator Control IC to Master)
data byte 1
data byte 2
LIN frame Data Byte
0
0
1
TH [2:0]
1
2
3
4
1
5
TI [4:0]
2
6
3
7
0
1
1
2
2
3
4
5
5
6
6
7
Bit in LIN frame Data Byte
Information field symbol
Bit in information field
TJ [7:0]
2
0
4
0
3
4
7
LSB
MSB LSB
MSB LSB
MSB
first data bit (after LIN ID)
last data bit (before checksum)
Figure 18 Frame TX2
Data Sheet
56
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 58 Information fields of the frame TX2
Symbol
TH
Bits
Description
TLE8881-2 register
3
5
3
5
Alternator supplier identification
Alternator class identification
Manufacturer ID: Infineon = 001B
ASIC ID: B11, B12 = 00011B
RSUPP[2:0]
TI
RCLASS[4:0]
TJ [2:0]
TJ [7:3]
–
–
6.3.6
LIN TX3 frame
The chapter describes the content of the LIN TX3 frame (information response from the TLE8881-2 to the LIN
master). The mapping between the LIN frame content and the internal register assignments in described in
Chapter 6.4.
first data bit (after LIN ID)
last data bit (before checksum)
Frame TX3 (Alternator Control IC to Master)
data byte 1
data byte 2
data byte 3
data byte 4
LIN frame Data Byte
0
1
2
3
4
5
TN [4:0]
2
6
3
7
4
0
1
1
2
2
3
4
5
5
6
6
7
0
1
TP [2:0]
1
2
3
4
5
6
7
0
0
1
1
2
2
3
4
5
5
6
6
7
Bit in LIN frame Data Byte
Information field symbol
Bit in information field
TK TL TM
TO [7:0]
TQ TR TS TT TU
TV [7:0]
0
0
0
0
1
0
3
4
7
0
2
0
0
0
0
0
3
4
7
LSB LSB LSB LSB
MSB LSB
MSB LSB
MSB LSB LSB LSB LSB LSB LSB
MSB
Figure 19 Frame TX3
All bits in the LIN TX3 frame which are not covered by any information field are set to ‘0’ (dominant) by the
TLE8881-2.
The diagnosis flags F-HT, F-ROT, F-EL, F-CEF and F-CTO mentioned in Table 59 are described in Chapter 4.5.
Table 59 Information fields of the frame TX3 for OEM1, VDA-A and VDA-B and variants
Symbol
TK
Bits
1
Description
TLE8881-2 register
Diagnosis flag
Diagnosis flag
Diagnosis flag
RDC[4:0]
Diagnosis flag F-HT (high temperature indication flag)
Diagnosis flag F-ROT (mechanical abnormality flag)
Diagnosis flag F-EL (electrical abnormality flag)
Duty cycle value of the excitation PWM (field monitoring)
Measured excitation current
TL
1
TM
1
TN
5
TO
8
RMC8[7:0]
TP
3
Data Indicator for TX3 frame byte 4
RDI[2:0]
(Chapter 6.4.7)
TQ
TR
TS
TT
TU
TV
1
1
1
1
1
8
Reserved; TQ := 0B
Reserved; TR := 0B
Reserved; TS := 0B
Diagnosis flag F-CEF (LIN communication error flag)
Diagnosis flag F-CTO (LIN communication time-out flag)
Diagnosis flag
Diagnosis flag
Multiplex byte to represent measured voltage /
Measured temperature /
Measured speed /
RMV[7:0] /
RMT[7:0] /
RMS[7:0] /
RVSET [7:0]
Voltage set point
Data Sheet
57
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 60 Information fields of the frame TX3 for OEM2 variant
Symbol
TK
Bits
1
Description
TLE8881-2 register
Diagnosis flag
Diagnosis flag
Diagnosis flag
RDC[4:0]
Diagnosis flag F-HT (high temperature indication flag)
Diagnosis flag F-ROT (mechanical abnormality flag)
Diagnosis flag F-EL (electrical abnormality flag)
Duty cycle value of the excitation PWM (field monitoring)
Measured excitation current
TL
1
TM
TN
TO
TP
1
5
8
RMC8[7:0]
3
Reserved; TP := 000B
TQ
TR
1
Reserved; TQ := 0B
1
Reserved; TR := 0B
TS
1
Reserved; TS := 0B
TT
1
Diagnosis flag F-CEF (LIN communication error flag)
Diagnosis flag F-CTO (LIN communication time-out flag)
Measured temperature
Diagnosis flag
Diagnosis flag
RMT[7:0]
TU
1
TV
6.4
LIN registers
The LIN registers are used as the data interface between the ECU and the TLE8881-2. The transmission of
information from the data interface is done via the LIN interface. A specific set of registers is writable and
defines the functional behavior of the TLE8881-2. Another set of registers is readable by the master and can be
used to monitor some kind of information.
For the register content after a wake-up from stand-by mode, after a logic reset and the state “default
operation”, see Chapter 6.5.
6.4.1
Register RVSET (voltage setpoint)
The writable internal register RVSET defines the setpoint of the regulation voltage (control parameter VSET).
The operation range is between 10.6 V and 16 V. The ECU can modify this register by using the LIN data field
RA. The actually applied voltage setpoint VSET can be limited by the Low HEO and TSC functions and does not
always match the value in the RVSET register.
While switching between the relevant states of the state machine, the VSET transition slopes are defined in
Table 61 are applied.
Table 61 Transition slopes of RVSET between states
Exit from state
Default operation
Default operation
Normal operation
Excitation-Off
Entry into state
Normal operation
Excitation-Off
RVSET transition slope
0 V/s (no transition slope)
0 V/s (no transition slope)
0.2 V/s
Default operation
Normal operation
Default operation
0 V/s (no transition slope)
0.2 V/s
Excitation-Off
The LIN frame variants “VDA-B” and “OEM1” offer the full resolution of typically 25 mV (refer to Table 63). In
the frame variants for “VDA-A” and “OEM2”, the most significant 2 bits of RA are always “00B”, so that
RVSET[1:0] := 00B). Therefore this configuration only uses a setpoint resolution of typically 100 mV (refer to
Table 62).
Data Sheet
58
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
For further information on the voltage regulation at high temperatures see Section 5.5.
Table 62 Parameter “voltage setpoint” for “VDA-A” and “OEM2” variants
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min Typ.
.
Max
.
Voltage regulation
setpoint
VSET
VSET
–
VSET := 10.6 V +
RVSET * 0.1 V
–
V
V
TJ < THT and
RVSET in range 0
to 54
P_7.4.1.1
P_7.4.1.2
Voltage regulation
setpoint
–
VSET := 16 V
–
TJ < THT and
RVSET > 54
Table 63 Parameter “Voltage Setpoint” in “VDA-B” and “OEM1” variants
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min Typ.
.
Max
.
Voltage regulation
setpoint
VSET
VSET
–
VSET := 10.6 V +
RVSET * 0.025 V
–
V
V
TJ < THT and
RVSET in range 0
to 216
P_7.4.1.3
P_7.4.1.4
Voltage regulation
setpoint
–
VSET := 16 V
–
TJ < THT and
RVSET > 216
6.4.2
RVSET reporting via LIN
The VSET can be reported in the LIN frame TX3.
The VSET reporting via LIN can be selected:
•
•
The VSET received by the LIN command is reported if NVM-VSET_report = 0B
The applied VSET for the internal regulation is reported if NVM-VSET_report = 1B
The applied VSET can be lower than the VSET sent via LIN if the TSC function reduces the setpoint due to high
temperatures.
6.4.3
Registers LRC (load response control)
The writable internal registers RLRCBZ, RLRCRT and RLRCDIS define the behavior of the LRC function and can
be modified by the ECU via the LIN interface. For a detail description of the LRC (Load Response Control) refer
to Chapter 5.12.
The ECU can modify these registers by using the LIN data fields RB, RC and RF, respectively.
Register implementation for LRC blind zone is indicated in Table 64.
Data Sheet
59
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 64 Parameter “LRC blind zone”
Parameter
Symbol
Values
Unit Note or Test Condition Number
Min. Typ.
Max
.
LRC blind zone
LRC blind zone
LRCBZ
LRCBZ
–
–
Register
RLRCBZ = 0
–
–
–
Blind zone = 3%/6.25%, P_7.4.2.1
depending on NVM
option “LRCBZ_0_SEL”
Register
–
Blind zone = 12%
P_7.4.2.2
RLRCBZ = 1
The register implementation for the LRC Rise Time for the “VDA-A” LIN frame variant is shown in Table 65,
whereas for “VDA-B”, “OEM2” and “OEM1” it is stated in Table 66.
Table 65 Parameter “LRC rise time” in “VDA-A” variant
Parameter
Symbol
Values
Min. Typ.
Unit Note or
Test Condition
Number
Max.
LRC rise time(0% up to
100%)
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
–
–
–
–
–
–
–
–
–
–
–
–
–
–
LRC disabled
–
s
s
s
s
s
s
s
s
s
s
s
s
s
s
0000
P_7.4.2.3
P_7.4.2.4
P_7.4.2.5
P_7.4.2.6
P_7.4.2.7
P_7.4.2.8
P_7.4.2.9
P_7.4.2.10
P_7.4.2.11
P_7.4.2.12
P_7.4.2.13
P_7.4.2.14
P_7.4.2.15
P_7.4.2.16
LRC rise time(0% up to
100%)
1
–
–
–
–
–
–
–
–
–
–
–
–
–
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
LRC rise time(0% up to
100%)
2
LRC rise time(0% up to
100%)
3
LRC rise time(0% up to
100%)
4
LRC rise time(0% up to
100%)
5
LRC rise time(0% up to
100%)
6
LRC rise time(0% up to
100%)
7
LRC rise time(0% up to
100%)
8
LRC rise time(0% up to
100%)
9
LRC rise time(0% up to
100%)
10
11
12
13
LRC rise time(0% up to
100%)
LRC rise time(0% up to
100%)
LRC rise time(0% up to
100%)
Data Sheet
60
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 65 Parameter “LRC rise time” in “VDA-A” variant (cont’d)
Parameter
Symbol
Values
Min. Typ.
Unit Note or
Test Condition
Number
Max.
LRC rise time(0% up to
100%)
LRCRT
LRCRT
–
14
–
s
1110
P_7.4.2.17
P_7.4.2.18
LRC rise time(0% up to
100%)
–
15
–
s
1111
Table 66 Parameter “LRC rise time” in “VDA-B”, “OEM2” and “OEM1” variants
Parameter
Symbol
Values
Min. Typ.
Unit Note or
Test Condition
Number
Max.
LRC rise time(0% up to
100%)
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
LRCRT
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
LRC disabled
–
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
0000
P_7.4.2.19
P_7.4.2.20
P_7.4.2.21
P_7.4.2.22
P_7.4.2.23
P_7.4.2.24
P_7.4.2.25
P_7.4.2.26
P_7.4.2.27
P_7.4.2.28
P_7.4.2.29
P_7.4.2.30
P_7.4.2.31
P_7.4.2.32
P_7.4.2.33
P_7.4.2.34
LRC rise time(0% up to
100%)
0.28
0.5
0.75
1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
LRC rise time(0% up to
100%)
LRC rise time(0% up to
100%)
LRC rise time(0% up to
100%)
LRC rise time(0% up to
100%)
2
LRC rise time(0% up to
100%)
3
LRC rise time(0% up to
100%)
4
LRC rise time(0% up to
100%)
5
LRC rise time(0% up to
100%)
6
LRC rise time(0% up to
100%)
7
LRC rise time(0% up to
100%)
8
LRC rise time(0% up to
100%)
9
LRC rise time(0% up to
100%)
10
12
15
LRC rise time(0% up to
100%)
LRC rise time(0% up to
100%)
Data Sheet
61
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Register implementation for LRC disable speed is indicated in Table 67.
Table 67 Parameter “LRC disable speed”
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min. Typ.
Max.
LRC disable rotor
speed
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
nLRCDIS
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
2400
2530
2670
2830
3000
3200
3430
3690
4000
4360
4790
5320
5990
6860
8010
–
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
0000
P_7.4.2.35
P_7.4.2.36
P_7.4.2.37
P_7.4.2.38
P_7.4.2.39
P_7.4.2.40
P_7.4.2.41
P_7.4.2.42
P_7.4.2.43
P_7.4.2.44
P_7.4.2.45
P_7.4.2.46
P_7.4.2.47
P_7.4.2.48
P_7.4.2.49
P_7.4.2.50
LRC disable rotor
speed
–
–
–
–
–
–
–
–
–
–
–
–
–
–
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC disable rotor
speed
LRC not disabled –
by rotor speed
6.4.4
Register RCLIM (excitation current limitation)
The writable internal register RCLIM defines the limitation value of the excitation current.
While switching between the relevant states of the state machine, RCLIM transition slopes as defined in
Table 68 are applied.
Data Sheet
62
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 68 Transition slopes of RCLIM between states
Exit from state
Entry into state
RCLIM transition slope
Normal operation
Default operation
0.375 A/s
If the limitation is removed or increased, a positive jump of the duty cycle value can occur. If LRC is enabled,
LRC becomes active to avoid changes of torque.
The mapping between RCLIM and CLIM for the “VDA-A” variant is stated in Table 69, whereas for the “VDA-B”
and “OEM1” variants it is given in Table 70. The “OEM2” variant is stated in Table 71.
Table 69 Parameter “excitation current limitation” for “VDA-A” variant
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min. Typ.
Max.
Register current
limitation
RCLIM
CLIM
CLIM
CLIM
CLIM
0
–
–
–
–
–
31
-
–
P_7.4.3.1
Excitation current
limitation
RCLIM disabled
2 A
–
–
–
–
A
A
A
A
Normal operation P_7.4.3.2
and RCLIM = 01)
Excitation current
limitation
Normal operation P_7.4.3.3
and RCLIM < 91)
Excitation current
limitation
CLIM :=
RCLIM * 0.25 A
Normal operation P_7.4.3.4
and 9 ≤ RCLIM ≤ 311)
Excitation current
limitation
No current
limitation
Default operation1) P_7.4.3.5
1) The shown values don’t include the current measurement tolerance.
Table 70 Parameter “excitation current limitation” for “VDA-B” and “OEM1” variants
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min Typ.
.
Max
.
Register current
limitation
RCLIM
CLIM
CLIM
CLIM
CLIM
0
–
–
–
–
–
127
-
–
P_7.4.3.6
P_7.4.3.7
P_7.4.3.8
P_7.4.3.9
Excitation current
limitation
RCLIM disabled
–
A
A
A
A
Normal operation
and RCLIM = 01)
Excitation current
limitation
CLIM :=
RCLIM * 0.1 A
–
Normal operation
and 0 < RCLIM ≤ 1101)
Excitation current
limitation
No current
limitation
–
Normal operation
and RCLIM > 1101)
Excitation current
limitation
No current
limitation
–
Default operation1) P_7.4.3.10
1) The shown values don’t include the current measurement tolerance.
Data Sheet
63
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 71 Parameter “excitation current limitation” for “OEM2” variant
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min. Typ.
Max.
Register current
limitation
RCLIM
CLIM
CLIM
CLIM
0
–
–
–
–
255
-
–
P_7.4.3.11
P_7.4.3.12
P_7.4.3.13
Excitation current
limitation
RCLIM disabled
–
–
–
A
A
A
Normal operation
and RCLIM = 01)
Excitation current
limitation
CLIM :=
RCLIM * 0.04 A
Normal operation
and 0 < RCLIM ≤ 2551)
Excitation current
limitation
No current
limitation
Default operation1) P_7.4.3.14
1) The shown values don’t include the current measurement tolerance.
6.4.5
Register RFPARA (F-Para function)
The writable internal register RFPARA allows the activation of the pre-selected regulation parameter set (Ki
and Kp factors of the PI regulation loop) as defined in NVM-RPARA_SEL. During normal operation state (LIN
communication available), the ECU can modify this register by using the LIN data field RH in the LIN RX frame.
For a detailed description of this function refer to Chapter 5.14.
Table 72 Parameter “F-Para regulation parameters”
Parameter
Symbol
Values
Min. Typ.
Unit Note or Test Condition
Number
Max.
F-Para regulation FPARA
parameters
–
RFPARA
–
–
–
Normal dynamic regulation
behavior:
RFPARA = 0;
P_7.4.4.1
F-Para regulation FPARA
parameters
–
RFPARA
–
–
–
–
Normal dynamic regulation
behavior:
RFPARA = 1;
P_7.4.4.2
P_7.4.4.3
P_7.4.4.4
P_7.4.4.5
NVM-RPARA_SEL = 11B
F-Para regulation FPARA
parameters
–
–
–
RFPARA
RFPARA
RFPARA
–
–
–
Slow dynamic regulation
behavior:
RFPARA = 1;
NVM-RPARA_SEL = 10B
F-Para regulation FPARA
parameters
Slower dynamic regulation
behavior:
RFPARA = 1;
NVM-RPARA_SEL = 01B
F-Para regulation FPARA
parameters
Slowest dynamic regulation
behavior:
RFPARA = 1;
NVM-RPARA_SEL = 00B
Data Sheet
64
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6.4.6
Register RHT (adjustment of high temperature threshold)
The writable internal register RHT allows an adjustment of the THT high temperature behavior as mentioned
in the Temperature Setpoint Compensation (see Chapter 5.6).
The related mapping is stated in Table 73.
Table 73 Parameter “HT adjustment”
Parameter
Symbol
Values
Typ.
Unit
Note or
Test Condition
Number
Min.
Max.
HT adjustment
HT adjustment
HT adjustment
HT adjustment
HT adjustment
HT adjustment
HT adjustment
HT adjustment
HTADJ
HTADJ
HTADJ
HTADJ
HTADJ
HTADJ
HTADJ
HTADJ
–
0
–
°C
°C
°C
°C
°C
°C
°C
°C
Register
RHT[2:0] := 000
P_7.4.5.1
P_7.4.5.2
P_7.4.5.3
P_7.4.5.4
P_7.4.5.5
P_7.4.5.6
P_7.4.5.7
P_7.4.5.8
–
–
–
–
–
–
–
-16
-12
-8
–
–
–
–
–
–
–
Register
RHT[2:0] := 001
Register
RHT[2:0] := 010
Register
RHT[2:0] := 011
-4
Register
RHT[2:0] := 100
+4
+8
+12
Register
RHT[2:0] := 101
Register
RHT[2:0] := 110
Register
RHT[2:0] := 111
6.4.7
Register RDI (response data indicator)
The data field TV[7:0] in the LIN frame TX3 is dependant on the data response indicator RDI sent in the LIN
frame RX.
Table 74 Response Data Indicator Coding
LIN frame Function
RX, RE[2:0]
LIN frame TX3, LIN frame TX3, TV[7:0]
TP[2:0]
000B
001B
010B
011B
100B
101B
LRCBZ, RHT and F-Para set to default1)
000B
001B
010B
011B
100B
101B
00000000B
As requested in RX-Frame
As requested in RX-Frame
As requested in RX-Frame
As requested in RX-Frame
RVSET (see Chapter 6.4.1)
RMV (see Chapter 6.4.11)
RMT (see Chapter 6.4.10)2)
RMS (see Chapter 6.4.12)
00000000B
Reserved for Infineon; Function settings as
requested in the last valid RX-Frame.
110B
111B
Used for special PRX frame;
LRCBZ, RHT and F-Para set to default1)
110B
111B
00000000B
00000000B
1) If RDI=000B or RDI=111B, the F-Para function is set to default (“0”) and any F-PARA=”1” in the LIN-RX frame is ignored.
Data Sheet
65
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
2) RDI internally adjusted to 011B, if OEM2 variant is active (NVM-CFG = 11B). However, via LIN communication,
RDI := 000B is reported.
6.4.8
Register RDC (excitation PWM duty cycle)
The readable internal register RDC shows the excitation PWM duty cycle (DC). The ECU can monitor this
register by using the LIN data fields TD and TN.
The register RDC as provided via LIN can be filtered using a dedicated EWMA filter (refer to Chapter 6.6.1).
Table 75 Parameter “excitation duty cycle”
Parameter Symbol
Values
Unit Note or
Test Condition
Number
Min. Typ.
Max.
Excitation DC
PWM duty
cycle
–
n * 100%/32 ≤ DC < (n+1) * 100%/32 –
-
Register
RDC[4:0] = n
P_7.4.7.1
6.4.9
Register RMC (measured excitation current)
The readable internal register RMC[7:0] shows the measured excitation current.
The ECU can monitor this register by using the respective LIN data fields TE[5:0] (RMC6) in LIN TX1 frame as
well as TO[7:0] (RMC8) in LIN TX3 frame.
The register RMC as provided via LIN can be filtered using a dedicated EWMA filter (refer to Chapter 6.6.3).
Table 76 Parameter “measured excitation current” in “VDA-A” variant
Parameter
Symbol
Values
Typ.
RMC6 * 0.125
Unit Note or
Test Condition
Number
Min.
Max.
Measured excitation MC
current
–
–
A
0 ≤ RMC6 ≤ 63
P_7.4.8.1
Table 77 Parameter “measured excitation current” in “OEM1” and “VDA-B” variants
Parameter
Symbol
Values
Typ.
RMC8 * 0.05
Unit Note or
Test Condition
Number
Min.
Max.
Measured excitation
current
MC
–
–
A
0 ≤ RMC8 ≤ 255 P_7.4.8.3
Table 78 Parameter “measured excitation current” in “OEM2” variant
Parameter Symbol Values Unit Note or
Test Condition
Number
Min.
Typ.
Max.
Measured excitation MC
current
–
RMC8 * 0.04 0 ≤ RMC8 ≤ 255 P_7.4.8.5
–
A
6.4.10
Register RMT (measured temperature on chip)
The readable internal register RMT[7:0] shows the measured chip temperature. For the OEM2 variant, RMT is
always given in the LIN TX3 frame (Data Byte 4). For all variants except of OEM2 (VDA-A, VDA-B, OEM1), the
selection of RDI[2:0] is required to choose the output of the measured temperature in the LIN TX3 frame.
Data Sheet
66
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
The ECU can monitor this register by using the LIN data field TV of TX3.
Table 79 Parameter “measured temperature on chip” for OEM1, VDA-A and VDA-B variants
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min. Typ.
Max
.
Register measured
temperature on chip
RMT
0
–
–
63
–
All LIN frame variants P_7.4.9.1
1)
Measured temperature MT
-42 + RMT *
–
°C
P_7.4.9.2
4 ≤ TJ < -38 + RMT *
4
1) The shown values for the measured temperature on chip do not include the temperature measurement tolerance.
Table 80 Parameter “measured temperature on chip” for OEM2 variant
Parameter
Symbol
Values
Unit Note or
Test Condition
Number
Min. Typ.
Max
.
Register measured
temperature on chip
RMT
0
–
–
255
–
All LIN frame variants P_7.4.9.3
1)
Measured temperature MT
-42 + RMT ≤ TJ < -41 –
°C
P_7.4.9.4
+ RMT
1) The shown values for the measured temperature on chip do not include the temperature measurement tolerance.
6.4.11
Register RMV (measured voltage at VBA terminal)
The readable internal register RMV[7:0] shows the measured voltage VBA. It is necessary to address RDI[2:0] to
select the output of the measured voltage in the LIN TX3 frame. This is only possible for the OEM1, VDA-A and
VDA-B variants.
The ECU can monitor this register by using the LIN data field TV of TX3. The measurable voltage is constrained
to the range of 8 V to 24 V.
The register RMV as provided via LIN can be filtered using a dedicated EWMA filter (refer to Chapter 6.6.2).
Table 81 Parameter “measured voltage at terminal VBA”
Parameter
Symbol
Values
Typ.
Uni Note or
Number
t
Test Condition
Min.
Max.
Register “measured
voltage at VBA terminal”
Measured voltage at VBA MV1)
terminal
RMV
0
–
255
-
All LIN frame
variants
P_7.4.10.1
P_7.4.10.2
Typ.value 8V+ RMV Typ.value mV 0 ≤ RMV < 161
- 50 mV
* 100 mV + 50 mV
Measured voltage at VBA MV
terminal
24
–
–
V
161 ≤ RMV < 255 P_7.4.10.3
1) The shown values for the voltage on terminal BA don’t include the voltage measurement tolerance.
Data Sheet
67
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6.4.12
Register RMS (measured speed)
The readable internal register RMS[7:0] shows the measured speed of the alternator in RPM. It is necessary to
address RDI[2:0] to select the output of the measured speed in the LIN TX3 frame. This is only possible for the
OEM1, VDA-A and VDA-B variants.
The ECU can monitor this register by using the LIN data field TV of TX3. The measurable speed is constrained
to the range of 500 rpm to 25600 rpm.
There are two options to report the measured speed:
•
•
The speed is reported in the classical way shown in Table 82 if NVM-RMS_report = 0B.
The speed is reported with a linear function if NVM-RMS_report = 1B.
In this case RMS = measured rotation speed [rpm] / 100 rpm.
1)
Table 82 Parameter “measured speed” for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
–
Max.
–
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
<567
567
569
571
574
576
578
581
583
585
588
590
593
595
598
600
603
605
608
610
613
615
618
621
623
626
629
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
rpm
0
P_7.4.11.1
P_7.4.11.2
P_7.4.11.3
P_7.4.11.4
P_7.4.11.5
P_7.4.11.6
P_7.4.11.7
P_7.4.11.8
P_7.4.11.9
P_7.4.11.10
P_7.4.11.11
P_7.4.11.12
P_7.4.11.13
P_7.4.11.14
P_7.4.11.15
P_7.4.11.16
P_7.4.11.17
P_7.4.11.18
P_7.4.11.19
P_7.4.11.20
P_7.4.11.21
P_7.4.11.22
P_7.4.11.23
P_7.4.11.24
P_7.4.11.25
P_7.4.11.26
P_7.4.11.27
–
–
1
2
3
4
5
6
7
8
9
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
rpm 10
rpm 11
rpm 12
rpm 13
rpm 14
rpm 15
rpm 16
rpm 17
rpm 18
rpm 19
rpm 20
rpm 21
rpm 22
rpm 23
rpm 24
rpm 25
rpm 26
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Data Sheet
68
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1)
Table 82 Parameter “measured speed” (cont’d) for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
632
634
637
640
643
646
649
652
655
658
661
664
667
670
673
676
679
682
686
689
692
696
699
702
706
709
713
716
720
724
727
731
735
738
742
746
750
rpm 27
rpm 28
rpm 29
rpm 30
rpm 31
rpm 32
rpm 33
rpm 34
rpm 35
rpm 36
rpm 37
rpm 38
rpm 39
rpm 40
rpm 41
rpm 42
rpm 43
rpm 44
rpm 45
rpm 46
rpm 47
rpm 48
rpm 49
rpm 50
rpm 51
rpm 52
rpm 53
rpm 54
rpm 55
rpm 56
rpm 57
rpm 58
rpm 59
rpm 60
rpm 61
rpm 62
rpm 63
P_7.4.11.28
P_7.4.11.29
P_7.4.11.30
P_7.4.11.31
P_7.4.11.32
P_7.4.11.33
P_7.4.11.34
P_7.4.11.35
P_7.4.11.36
P_7.4.11.37
P_7.4.11.38
P_7.4.11.39
P_7.4.11.40
P_7.4.11.41
P_7.4.11.42
P_7.4.11.43
P_7.4.11.44
P_7.4.11.45
P_7.4.11.46
P_7.4.11.47
P_7.4.11.48
P_7.4.11.49
P_7.4.11.50
P_7.4.11.51
P_7.4.11.52
P_7.4.11.53
P_7.4.11.54
P_7.4.11.55
P_7.4.11.56
P_7.4.11.57
P_7.4.11.58
P_7.4.11.59
P_7.4.11.60
P_7.4.11.61
P_7.4.11.62
P_7.4.11.63
P_7.4.11.64
Data Sheet
69
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1)
Table 82 Parameter “measured speed” (cont’d) for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
754
758
762
766
770
774
778
783
787
791
796
800
804
809
814
818
823
828
832
837
842
847
852
857
862
867
873
878
883
889
894
900
906
911
917
923
929
rpm 64
rpm 65
rpm 66
rpm 67
rpm 68
rpm 69
rpm 70
rpm 71
rpm 72
rpm 73
rpm 74
rpm 75
rpm 76
rpm 77
rpm 78
rpm 79
rpm 80
rpm 81
rpm 82
rpm 83
rpm 84
rpm 85
rpm 86
rpm 87
rpm 88
rpm 89
rpm 90
rpm 91
rpm 92
rpm 93
rpm 94
rpm 95
rpm 96
rpm 97
rpm 98
rpm 99
rpm 100
P_7.4.11.65
P_7.4.11.66
P_7.4.11.67
P_7.4.11.68
P_7.4.11.69
P_7.4.11.70
P_7.4.11.71
P_7.4.11.72
P_7.4.11.73
P_7.4.11.74
P_7.4.11.75
P_7.4.11.76
P_7.4.11.77
P_7.4.11.78
P_7.4.11.79
P_7.4.11.80
P_7.4.11.81
P_7.4.11.82
P_7.4.11.83
P_7.4.11.84
P_7.4.11.85
P_7.4.11.86
P_7.4.11.87
P_7.4.11.88
P_7.4.11.89
P_7.4.11.90
P_7.4.11.91
P_7.4.11.92
P_7.4.11.93
P_7.4.11.94
P_7.4.11.95
P_7.4.11.96
P_7.4.11.97
P_7.4.11.98
P_7.4.11.99
P_7.4.11.100
P_7.4.11.101
Data Sheet
70
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1)
Table 82 Parameter “measured speed” (cont’d) for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
935
rpm 101
rpm 102
rpm 103
rpm 104
rpm 105
rpm 106
rpm 107
rpm 108
rpm 109
rpm 110
rpm 111
rpm 112
rpm 113
rpm 114
rpm 115
rpm 116
rpm 117
rpm 118
rpm 119
rpm 120
rpm 121
rpm 122
rpm 123
rpm 124
rpm 125
rpm 126
rpm 127
rpm 128
rpm 129
rpm 130
rpm 131
rpm 132
rpm 133
rpm 134
rpm 135
rpm 136
rpm 137
P_7.4.11.102
P_7.4.11.103
P_7.4.11.104
P_7.4.11.105
P_7.4.11.106
P_7.4.11.107
P_7.4.11.108
P_7.4.11.109
P_7.4.11.110
P_7.4.11.111
P_7.4.11.112
P_7.4.11.113
P_7.4.11.114
P_7.4.11.115
P_7.4.11.116
P_7.4.11.117
P_7.4.11.118
P_7.4.11.119
P_7.4.11.120
P_7.4.11.121
P_7.4.11.122
P_7.4.11.123
P_7.4.11.124
P_7.4.11.125
P_7.4.11.126
P_7.4.11.127
P_7.4.11.128
P_7.4.11.129
P_7.4.11.130
P_7.4.11.131
P_7.4.11.132
P_7.4.11.133
P_7.4.11.134
P_7.4.11.135
P_7.4.11.136
P_7.4.11.137
P_7.4.11.138
941
947
954
960
966
973
980
986
993
1000
1007
1014
1021
1029
1036
1043
1051
1059
1067
1075
1083
1091
1099
1106
1116
1125
1134
1143
1152
1161
1171
1180
1190
1200
1210
1220
Data Sheet
71
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1)
Table 82 Parameter “measured speed” (cont’d) for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
1231
1241
1252
1263
1274
1286
1297
1309
1321
1333
1346
1358
1371
1385
1398
1412
1426
1440
1455
1469
1485
1500
1516
1532
1548
1565
1582
1600
1618
1636
1655
1674
1694
1714
1735
1756
1778
rpm 138
rpm 139
rpm 140
rpm 141
rpm 142
rpm 143
rpm 144
rpm 145
rpm 146
rpm 147
rpm 148
rpm 149
rpm 150
rpm 151
rpm 152
rpm 153
rpm 154
rpm 155
rpm 156
rpm 157
rpm 158
rpm 159
rpm 160
rpm 161
rpm 162
rpm 163
rpm 164
rpm 165
rpm 166
rpm 167
rpm 168
rpm 169
rpm 170
rpm 171
rpm 172
rpm 173
rpm 174
P_7.4.11.139
P_7.4.11.140
P_7.4.11.141
P_7.4.11.142
P_7.4.11.143
P_7.4.11.144
P_7.4.11.145
P_7.4.11.146
P_7.4.11.147
P_7.4.11.148
P_7.4.11.149
P_7.4.11.150
P_7.4.11.151
P_7.4.11.152
P_7.4.11.153
P_7.4.11.154
P_7.4.11.155
P_7.4.11.156
P_7.4.11.157
P_7.4.11.158
P_7.4.11.159
P_7.4.11.160
P_7.4.11.161
P_7.4.11.162
P_7.4.11.163
P_7.4.11.164
P_7.4.11.165
P_7.4.11.166
P_7.4.11.167
P_7.4.11.168
P_7.4.11.169
P_7.4.11.170
P_7.4.11.171
P_7.4.11.172
P_7.4.11.173
P_7.4.11.174
P_7.4.11.175
Data Sheet
72
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1)
Table 82 Parameter “measured speed” (cont’d) for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
1800
1823
1846
1870
1895
1920
1946
1973
2000
2028
2057
2087
2118
2149
2182
2215
2250
2286
2323
2361
2400
2441
2483
2526
2571
2618
2667
2717
2769
2824
2880
2939
3000
3064
3130
3200
3273
rpm 175
rpm 176
rpm 177
rpm 178
rpm 179
rpm 180
rpm 181
rpm 182
rpm 183
rpm 184
rpm 185
rpm 186
rpm 187
rpm 188
rpm 189
rpm 190
rpm 191
rpm 192
rpm 193
rpm 194
rpm 195
rpm 196
rpm 197
rpm 198
rpm 199
rpm 200
rpm 201
rpm 202
rpm 203
rpm 204
rpm 205
rpm 206
rpm 207
rpm 208
rpm 209
rpm 210
rpm 211
P_7.4.11.176
P_7.4.11.177
P_7.4.11.178
P_7.4.11.179
P_7.4.11.180
P_7.4.11.181
P_7.4.11.182
P_7.4.11.183
P_7.4.11.184
P_7.4.11.185
P_7.4.11.186
P_7.4.11.187
P_7.4.11.188
P_7.4.11.189
P_7.4.11.190
P_7.4.11.191
P_7.4.11.192
P_7.4.11.193
P_7.4.11.194
P_7.4.11.195
P_7.4.11.196
P_7.4.11.197
P_7.4.11.198
P_7.4.11.199
P_7.4.11.200
P_7.4.11.201
P_7.4.11.202
P_7.4.11.203
P_7.4.11.204
P_7.4.11.205
P_7.4.11.206
P_7.4.11.207
P_7.4.11.208
P_7.4.11.209
P_7.4.11.210
P_7.4.11.211
P_7.4.11.212
Data Sheet
73
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1)
Table 82 Parameter “measured speed” (cont’d) for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
nR
3349
3429
3512
3600
3692
3789
3892
4000
4114
4235
4364
4500
4645
4800
4966
5143
5333
5538
5760
6000
6261
6545
6857
7200
7579
8000
8471
9000
9600
10266
11077
12000
13091
14400
16000
18000
20571
rpm 212
rpm 213
rpm 214
rpm 215
rpm 216
rpm 217
rpm 218
rpm 219
rpm 220
rpm 221
rpm 222
rpm 223
rpm 224
rpm 225
rpm 226
rpm 227
rpm 228
rpm 229
rpm 230
rpm 231
rpm 232
rpm 233
rpm 234
rpm 235
rpm 236
rpm 237
rpm 238
rpm 239
rpm 240
rpm 241
rpm 242
rpm 243
rpm 244
rpm 245
rpm 246
rpm 247
rpm 248
P_7.4.11.213
P_7.4.11.214
P_7.4.11.215
P_7.4.11.216
P_7.4.11.217
P_7.4.11.218
P_7.4.11.219
P_7.4.11.220
P_7.4.11.221
P_7.4.11.222
P_7.4.11.223
P_7.4.11.224
P_7.4.11.225
P_7.4.11.226
P_7.4.11.227
P_7.4.11.228
P_7.4.11.229
P_7.4.11.230
P_7.4.11.231
P_7.4.11.232
P_7.4.11.233
P_7.4.11.234
P_7.4.11.235
P_7.4.11.236
P_7.4.11.237
P_7.4.11.238
P_7.4.11.239
P_7.4.11.240
P_7.4.11.241
P_7.4.11.242
P_7.4.11.243
P_7.4.11.244
P_7.4.11.245
P_7.4.11.246
P_7.4.11.247
P_7.4.11.248
P_7.4.11.249
Data Sheet
74
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
1)
Table 82 Parameter “measured speed” (cont’d) for NVM-RMS_report = 0B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
Measured speed
nR
nR
nR
nR
nR
nR
nR
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
rpm 249
rpm 250
rpm 251
rpm 252
rpm 253
rpm 254
rpm 255
P_7.4.11.250
P_7.4.11.251
P_7.4.11.252
P_7.4.11.253
P_7.4.11.254
P_7.4.11.255
P_7.4.11.256
1) Speed values represent the threshold for switching to the coding shown in the table. The shown values do not include
the speed measurement tolerance.
Table 83 Parameter “measured speed” for NVM-RMS_report = 1B
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Register “Measured
speed”
RMS
6
-
255
–
–
P_7.4.12.1
P_7.4.12.3
1)
Measured speed
nR
–
RMS*100
–
rpm 6≤RMS≤255
1) The shown values for the measured speed do not include the speed measurement tolerance.
6.4.13
Register RSUPP and RCLASS
The readable internal register RSUPP[2:0] contains the alternator supplier code. The ECU can monitor this
register by using the LIN data field TH.
The readable internal register RCLASS[4:0] contains the alternator class code. The ECU can monitor this
register by using the LIN data field TI.
The registers RSUPP and RCLASS are loaded from the EEPROM.
6.5
Default register content
The registers shown in table Table 84 are writable registers. Therefore, these registers will be set by the device
if:
•
•
•
a logic reset occurs, or
the TLE8881-2 wakes up from stand-by, or
the state machine enters the state “default operation”.
Data Sheet
75
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 84 Default writable register content
TLE8881-2 register Description
Reference
RVSET[7:0]
Dependent on NVM-VSET.
Register RVSET (voltage setpoint),
Without NVM modification (default values):
VSET = 14.3 V
Section 6.4.1
VDA-A/OEM2: RVSET[7:2] := 100010B (= 34)
VDA-B/OEM1: RVSET[7:0] := 10001000B (= 136)
RLRCBZ
Dependent on NVM-LRCBZ and NVM-
LRCBZ_0_SEL.
Registers LRC (load response
control), Section 6.4.3
Without NVM modification (default values):
LRCBZ = 3 %
RLRCBZ := 0B
RLRCRT[3:0]
RLRCDIS[3:0]
Dependent on NVM-LRCRT and NVM-LRCRT_1s. Registers LRC (load response
Without NVM modification (default values):
LRCRT = 5 s
control), Section 6.4.3
VDA-A: RLRCRT[3:0] := 0011B (= 3)
VDA-B/OEM1/OEM2: RLRCRT[3:0] := 0110B (= 6)
Dependent on NVM-LRCDIS.
Without NVM modification: nLRCDIS = 4000 rpm
RLRCDIS[3:0] := 1000B
Registers LRC (load response
control), Section 6.4.3
RCLIM[7:0]
RDI[2:0]
Excitation current limitation disabled:
RCLIM[7:0] := 00000000B (= 0)
Register RCLIM (excitation current
limitation), Section 6.4.4
Request data indicator
RDI[2:0] := 000B
Register RDI (response data
indicator), Section 6.4.7
RHT[2:0]
THT = 160°C
RHT[2:0] := 000B (0°C temperature delta to THT)
Register RHT (adjustment of high
temperature threshold),
Section 6.4.6
RFPARA
RFPARA = 0B
Register RFPARA (F-Para
function), Section 6.4.5
The registers shown in Table 85 are readable registers. These register will be initialized if:
•
•
a logic reset occurs, or
the TLE8881-2 wakes up from stand-by state.
Table 85 Default readable register content
TLE8881-2
register
Description
Reference
RDC[4:0]
RMC6[5:0]
RMC8[7:0]
RMV[7:0]
Excitation PWM duty cycle DC = 0%
RDC[4:0] := 00000B
Register RDC (excitation PWM duty cycle),
Section 6.4.8
Measured excitation current MC = 0 A
RMC6[5:0] := 000000B (= 0)
Register RMC (measured excitation current),
Section 6.4.9
Measured excitation current MC = 0 A
RMC8[7:0] := 00000000B (= 0)
Register RMC (measured excitation current),
Section 6.4.9
Measured voltage MV = 8 V
RMV[7:0] := 00000000B (= 0)
Register RMV (measured voltage at VBA
terminal), Section 6.4.11
Data Sheet
76
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 85 Default readable register content (cont’d)
TLE8881-2
register
Description
Reference
RMT[7:0]
VDA-A/VDA-B/OEM1:
Register RMT (measured temperature on
Measured temperature MT = 24…28°C
RMT[7:0] := 00010010B (= 18)
OEM2:
chip), Section 6.4.10
Measured temperature MT = 31°C
RMT[7:0] := 01001001B (= 73)
RMS[7:0]
RMS[7:0] := 00000000B (< 560 rpm)
Register RMS (measured speed),
Section 6.4.12
RCLASS[4:0]
RSUPP[2:0]
Without NVM modification: 11111B (= 31)
Register RSUPP and RCLASS, Section 6.4.13
Without NVM modification: 0000001B (= 1) Register RSUPP and RCLASS, Section 6.4.13
Diagnosis flags
F-HT := 0
-
F-EL := 0
F-ROT := 0
F-CEF := 0
F-CTO depends on state machine (refer to
Chapter 4.4)
6.6
Register output filters
The TLE8881-2 includes Exponentially Weighted Moving Average (EWMA) filters of the first-order with its cut-
off frequency fFILT at τ = 63%. These filters are used for the output of some internal registers which are
communicated via LIN TX frames. The filtered values are not applied to the excitation output stage and
excitation DMOS.
6.6.1
Filter for excitation PWM duty cycle (RDC filter)
The excitation PWM duty cycle calculated by the TLE8881-2 during the regulation activity is readable via LIN
at the register RDC of the TX1 and TX3 commands after the EWMA filtering (see Chapter 6.4.8). The filtered
value is not applied to the excitation output stage.
The activation of the filter and its characteristics are configurable via NVM-DC_EWMA_K and depend on NVM-
CFG.
If the PSB (Phase Signal Boost) function is active, leading to switching between 100% (on-time) and 0% (off-
time) of the excitation PWM duty cycle, the input of the filter is regulated by the NVM-DC_EWMA_MODE.
PSB is an internal function to maintain the phase signal and is not relevant for computation models inside
ECU. The duty cycle which is communicated via LIN TX frames is used as input for most computation models.
With the NVM-DC_EWMA_MODE parameter, a different input value during an activated PSB function can be
selected to blank out this internal maintenance.
With the DC_EWMA_mode_DC0 parameter, the input value of the filter during activated PSB function can be
forced to zero. This parameter has priority over any setting in NVM-DC_EWMA_MODE.
Data Sheet
77
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Table 86 Parameter for “RDC filter” if NVM-CFG = 10B
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
RDC filter deactivated fDCF
–
–
–
Hz
Hz
Hz
Hz
1); NVM-
DC_EWMA_K = 00B
1); NVM-
DC_EWMA_K = 01B
1); NVM-
DC_EWMA_K = 10B
1); NVM-
P_7.6.1.5
P_7.6.1.1
P_7.6.1.2
P_7.6.1.3
RDC filter time
RDC filter time
RDC filter time
fDCF
fDCF
fDCF
0.5
3
1
1.5
7
5
7
10
13
DC_EWMA_K = 11B
1) Not subject to production test
Table 87 Parameter for “RDC filter” if NVM-CFG ≠ 10B
All parameters are valid for: -40°C < TJ < 150°C; VBA=14.5 V unless otherwise specified:
Parameter Symbol Values Unit Note or
Test Condition
Number
Min.
Typ.
Max.
1)
Duty cycle filter time tDCF
-15%
NVM-
+15%
ms
P_7.6.1.4
DC_EWMA_K
1) Not subject to production test
6.6.2
Filter for voltage measurement (RMV Filter)
The measured voltage at the VBA pin is readable via LIN at the register RMV after the EWMA filtering (see
Chapter 6.4.11).
The activation of the filter and its characteristics are configurable via the NVM field NVM-MV_EWMA_K.
Table 88 Parameter for “RMV filter”
All parameters are valid for: -40°C < TJ < 150°C; unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
RMV filter deactivated fMVF
–
–
–
Hz
Hz
Hz
Hz
1); NVM-
MV_EWMA_K = 00B
1); NVM-
MV_EWMA_K = 01B
1); NVM-
MV_EWMA_K = 10B
1); NVM-
P_7.6.2.4
P_7.6.2.1
P_7.6.2.2
P_7.6.2.3
RMV filter time
RMV filter time
RMV filter time
fMVF
fMVF
fMVF
0.5
3
1
1.5
7
5
7
10
13
MV_EWMA_K = 11B
1) Not subject to production test
Data Sheet
78
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6.6.3
Excitation current filter (RMC filter)
The measured current is readable via LIN at the register RMC after the EWMA filtering (see Chapter 6.4.9).
The activation of the excitation current filter and its characteristics are configurable via the NVM field NVM-
MC_EWMA_K.
Table 89 Parameter for “RMC filter”
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
RMC filter deactivated fMCF
–
–
–
Hz
Hz
Hz
Hz
1); NVM-
MC_EWMA_K = 00B
1); NVM-
MC_EWMA_K= 01B
1); NVM-
MC_EWMA_K = 10B
1); NVM-
P_7.6.3.1
P_7.6.3.1
P_7.6.3.2
P_7.6.3.3
RMC filter time
RMC filter time
RMC filter time
fMCF
fMCF
fMCF
0.5
3
1
1.5
7
5
7
10
13
MC_EWMA_K = 11B
1) Not subject to production test
Data Sheet
79
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6.7
LIN 2.1 diagnostic frames
Diagnostic frames are part of the LIN 2.1 data link layer specification only.
The TLE8881-2 is defined as a Class-1 device in the LIN 2.1 network.
By design, the TLE8881-2 supports two dedicated LIN 2.1 services:
•
•
Assign frame ID range (Chapter 6.7.3)
Read by identifier (Chapter 6.7.4)
6.7.1
Node configuration / identification
If the frame identifier 3CH or 3DH is identified, the upcoming frames are going to carry configuration and
identification data. It has to be distinguished between the Master Request Frame (MRF) and the Slave
Response Frame (SRF), whereas the respective frame are notified by:
•
•
Master Request Frame (MRF): 3CH
Slave Response Frame (SRF): 3DH
The requests are executed by the slave device as soon as the MRF is received and found to be valid (i.e. no bit
errors, checksum ok, etc).
MRF and SRF may be interleaved with an unconditional frame, e.g. MRF → RX → SRF.
As defined in the LIN specification MRF with NAD = 00H (where the following data is neglected) is interpreted
as a go-to-sleep command, regardless of the frame’s data bytes.
6.7.2
NAD, supplier ID, function ID and variant
In order to enable the LIN 2.1 services, the device’s node address (NAD) and at least the wildcard values of the
function ID and the supplier ID should be known. The NAD is used in the MRF and SRF frames to address one
particular slave node in a cluster, or to indicate the source of a response. The supplier ID is assigned to one
supplier by the LIN Consortium. Distinguishing between the different application functions of distinct devices
can handled by the function ID. The wildcard values are defined in the LIN 2.1 Protocol Specification. The
specific values for the TLE8881-2 are given in Table 90.
Table 90 Overview of LIN2.1 diagnostic frames identification codings
Message Type
Identification
0066H
7007H
00H
Wildcard / broadcast NAD
7FFFH (Wildcard)
FFFFH (Wildcard)
-
Supplier ID
Function ID
Variant
Alternator 1 NAD (if NVM-ALT = 0B)
Alternator 2 NAD (if NVM-ALT = 1B)
46H
7FH (Broadcast NAD)
7FH (Broadcast NAD)
47H
All values are hard-wired. The NAD is implemented as a metal option (8 bit) and can be changed via NVM-ALT.
Wildcards (= broadcasts) are fully supported by the TLE8881-2.
Beside these fixed supplier ID, function ID and variant, the TLE8881-2 offers the alternator’s supplier ID
(3 bits), the alternator class ID (5 bits), the ASIC Manufacturer ID (001B for Infineon) and the ASIC ID (5 bits) in
the TX2 frame, as given in Chapter 6.4.13.
It has to be considered that the LIN master is responsible for collision-avoidance (e.g. requests for SRF after
broadcast MRF).
Data Sheet
80
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
Broadcast NAD
Broadcast NAD will be used to send one MRF Frame to multiple LIN slaves in parallel. A LIN frame containing a
broadcast NAD is sent to all LIN 2.1 slave nodes in the LIN network. In case of multiple responses (e.g. collisions
on the bus), the LIN slave will detect a bit-error, abort the transmission and set the F-CEF flag.
NAD = 00H is used for go-to-sleep.
Support for diagnostic NAD (7EH)
Diagnostic NAD is only used for functional addressing for the transport layer. The TLE8881-2 is defined as a
Class-1 device. Class-1 devices do not need to support the transport layer diagnostics.
Therefore, the TLE8881-2 does not support this feature.
6.7.3
Assign frame ID range (LIN 2.1 service)
This supported service allows the LIN master to reconfigure the frame identifiers (also called PID in LIN 2.1
specification) of the slave. In order to ensure a proper behavior after start-up, the PIDs are set to their default
values. By sending the correct assign-frame-ID-range command, a LIN master could change the PIDs to new
values. Attention has to be paid to the fact that the TLE8881-2 will not check the newly assigned PIDs for
correctness. This function is implemented to be LIN 2.1 compliant.
As the OEM might not want to use the assign frame ID function, it can be deactivated in EEPROM via NVM-
AFIDen.
An assign-frame-ID-range command comprises of a kind of header, containing the NAD of the addressed
device, the protocol control information (PCI) and a service identifier (SID). These three bytes follow after the
actual LIN header containing synch-break, synch-byte and PID. The respective bytes are given in Table 91.
Table 91 Assign frame ID range service codings
Byte name
Master Request Frame (MRF) PCI
Byte content
06H
B7H
01H
F7H
SID
Slave Response Frame (SRF)
PCI
RSID
The NAD, PCI and SID are then followed by 5 data bytes. The first byte indicates the starting index (e.g. first PID
to modify), and the following 4 bytes indicate the new PID values. Refer to Figure 20 for an overview picture.
Valid values for PIDs are FFH for “don't care”, i.e. do not modify this frame’s PID, 00H for “unset” which trigger
the frame inactive, and any valid PID value between 00H and 3BH. For the TLE8881-2, the command could
change the PIDs of the frames RX, TX1, TX2 and TX3 (in the respective order regarding the incrementing index).
The MRF and SRF (frames 3CH and 3DH) are hard-wired, thus their PIDs cannot be changed. The request (if
correct) is processed immediately after the reception of the Master Request Frame (MRF) is complete.
Data
(Index)
Data
(Index+1)
Data
(Index+2)
Data
(Index+3)
LIN header
NAD
PCI
SID
Index
Figure 20 Assign-frame-ID-range MRF layout (NAD = 46H/47H, PCI = 06H, SID = B7H)
After processing an assign-frame-ID-range command, the TLE8881-2 responds to a consecutive SRF only if the
command is processed correctly. There is no error-response to this service.
Data Sheet
81
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
If the command was processed by the device, it sends the following response upon receiving an SRF (refer to
Figure 21).
unused
LIN header
NAD
PCI
RSID
0xFF
0xFF
0xFF
0xFF
0xFF
Figure 21 Assign-frame-ID-range SRF layout (NAD = 46H/47H, PCI = 01H, RSID = F7H)
6.7.4
Read by identifier (LIN 2.1 service)
This service is used by a master to obtain specific information about a LIN slave device. Since the TLE8881-2 is
configured as a Class-1 device, it only supports a query of function ID, supplier ID and variant.
Just like the assign-frame-ID-range service, the command for this service consists of a kind of header
containing the slave’s NAD, a PCI and a SID.
The respective bytes are given in Table 92.
Table 92 Read by identifier service codings
Byte name
PCI
Byte content
Master Request Frame (MRF)
Slave Response Frame (SRF)
06H
B2H
06H
F2H
SID
PCI
RSID
Afterwards follows an Identifier which defines the query. The TLE8881-2 only supports identifier=0 followed
by 4 data bytes containing the supplier ID and function ID (either the actual values or wildcards). Refer to
Figure 22 for an overview picture. If the values for the supplier and/or function ID do not match the LIN slave’s
IDs, the TLE8881-2 will not send a response. If the slave’s IDs are not known to the master, the usage of
wildcard values for function and supplier IDs is possible for those fields.
Supplier ID Supplier ID Function ID Function ID
LIN header
NAD
PCI
SID
Identifier
(LSB)
(MSB)
(LSB)
(MSB)
Figure 22 Read by identifier MRF layout (NAD = 46H/47H, PCI = 06H, SID = B2H)
The response consists of a header followed by the supplier ID, function ID and the variant (last byte). This
response layout is shown in Figure 23.
Supplier ID Supplier ID Function ID Function ID
LIN header
NAD
PCI
RSID
Variant
(LSB)
(MSB)
(LSB)
(MSB)
Figure 23 Read by identifier SRF layout (NAD = 46H/47H, PCI = 06H, SID = F2H)
6.8
Programming Mode
For details regarding programming the device please contact your sales representative or the Technical
Assistance Center (TAC).
Data Sheet
82
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
LIN interface
6.9
Internal LIN timers
A set of internal timers is implemented in the core to support several functions for the LIN communication
(refer to Table 93).
All timings are directly dependant on the internal oscillator (Chapter 8.3).
Table 93 Parameters for internal LIN timers
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
1)
Delay time to reset
diagnosis flag F-EL
tF-EL,Reset
20
62.5
100
ms
P_7.9.0.1
P_7.9.0.8
1)
Test mode entry timer tTMSTART
130
9.1
145
160
ms
;
After wake-up or logic
reset
1)
Test mode deactivation tTMOFF
10.3
11.5
s
;
P_7.9.0.9
timer
After wake-up or logic
reset
1) Not subject to production test.
Table 94 Modified timers in test mode
Timer
tCTO
Parameter name
Acceleration factor
No valid LIN communication timer
Diagnosis flag debounce timer
256
32
tF-EL
Data Sheet
83
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Phase monitoring block
7
Phase monitoring block
7.1
Block diagram
Self-start
Wakeup
Detection
self-start
wakeup
PH
speed for
frequency
measurement
Speed
Detection
Phase Voltage
Monitoring
Phase Signal
detected
Figure 24 Phase monitoring block
7.2
Self-start wake-up
Table 95 Parameter “self-start wake-up
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Self-start wake-up VDET
voltage threshold
100
200
350
mVpp VPH,CM = 1 V; fPH, = 600 Hz;
TJ = 27 °C;
P_8.2.0.1
Phase voltage (peak-to-peak)
for self-start wake-up in state
“stand-by”
Data Sheet
84
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Phase monitoring block
7.3
Speed detection
Table 96 Parameter “speed detection”
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or Test Condition
Number
Min.
Max.
Peak-to-peak
speed detection
threshold
VDET
–
200
–
mVpp Phase voltage (peak-to-
peak) for speed detection in
states “ComActive” and
“default operation”
P_8.3.0.1
Peak-to-peak
speed detection
threshold
VDET
–
–
800
–
–
mVpp Phase voltage (peak-to-
peak) for speed detection in
state “pre-excitation” and
CTO = 0 (no LIN
P_8.3.0.2
P_8.3.0.3
communication time-out)
Peak-to-peak
speed detection
threshold
VDET
800
mVpp Phase voltage (peak-to-
peak) for speed detection in
state “normal operation”.
7.4
Phase monitoring
The phase voltage monitoring block monitors the voltage at the phase input PH. The voltage is used for the
phase signal boost function (Chapter 5.11) and for the engine stop detection.
Table 97 Parameter phase monitoring
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Pull down resistor at RPHRD
terminal PH
20
33
50
kΩ
kΩ
ms
In state
“pre-excitation”
P_8.4.0.1
Pull down resistor at RPHRD
terminal PH
60
15
100
60
165
120
All states except “pre- P_8.4.0.2
excitation”
1);2);
Phase Signal time-out tPH,TO
P_8.4.0.3
1) Not subject to production test.
2) In case of phase signal loss, an event is generated after a time-out tPH,TO. This event is used by the state machine to
ensure that in case of no valid LIN communication and too low rotor speed, the TLE8881-2 goes to stand-by mode.
Data Sheet
85
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Core functions
8
Core functions
8.1
Voltage reference
A band gap reference is used for internal comparisons to achieve calibrated results.
8.2
Internal supply reference
The TLE8881-2 is equipped with the following voltage sources:
•
•
internal 5 V supply for analogue circuitry
internal 3.3 V supply for the CMOS logic circuitry
8.3
Oscillator
The oscillator generates the clock signal required by the logic functions (main control, regulation block,
TLE8881-2 registers and LIN protocol handler).
Table 98 Parameter oscillator
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
1.8
Unit Note or
Test Condition
Number
Min.
Max.
Oscillator frequency
fOSC
1.62
1.98
MHz Value is trimmed P_9.3.0.1
at 25°C
8.4
Charge pump
The charge pump is required for the excitation high-side driver. The charge pump does not require any
external energy storage capacitor.
Data Sheet
86
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Core functions
8.5
Restore state function
During the operation of the TLE8881-2, a supply micro-cut can occur. The restore state function as
implemented restores the operation state as well as essential register values to avoid a perceptible disruption
in operation.
8.5.1
Supply micro-cut
Table 99 Parameter micro-cut
All parameters are valid for: -40°C < TJ < 150°C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
Supply micro-cut
repetition period
TMC1
TMC2
TMC3
TMC4
10
–
–
–
–
–
ms
μs
μs
μs
1); VBA > 0 V
1); VBA > 0 V
1); VBA > 0 V
1); VBA > 0 V
P_9.5.1.1
P_9.5.1.2
P_9.5.1.3
P_9.5.1.4
Supply micro-cut
duration
–
5
5
100
50
Supply micro-cut fall
time
Supply micro-cut rise
time
50
1) Not subject to production test.
TMC1
VBA
90%
10%
time
TMC3
TMC2
TMC4
Figure 25 Supply micro-cut
Data Sheet
87
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Core functions
8.5.2
Restore state event
If a logic inadvertent reset occurs in the state normal operation or default operation, the following information
is stored for at least (TMC2+TMC3+TMC4) and restored after reset:
•
•
•
•
•
Normal operation data bit (fast startup in normal operation or default operation)
Regulation voltage setpoint (VSET) with a resolution of 100 mV
LRC rise time (LRCRT)
Targeted FEXLIM region
F-Para function activation (as requested via the LIN RX frame)
After the reset the following actions are executed if a valid restore state condition is detected:
•
•
•
The stored register information is restored, all other registers are initialized (like after wake-up).
The LRC duty cycle is set to 100%.
Dependent on the stored information, the state machine continues either on the state “normal operation”
or “default operation”.
The restore state function does not store information related to the assign frame ID range service (refer to
Chapter 6.7.3). This means that any previously assigned LIN IDs have to be re-assigned after inadvertent
reset.
Data Sheet
88
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
9
Non-Volatile Memory (NVM)
Throughout this chapter the terms NVM (Non-Volatile Memory) and EEPROM are used as synonyms,
disregarding the fact that NVM describes a broader class of memories, where the described EEPROM is only a
special case.
With the available NVM field-set, the TLE8881-2 offers the tuning, activation and deactivation of specific
functions so that a wide range of applications are addressable with one single device properly configured.
After every regular power-up, on stand-by wake-up, or after internal logic reset, the NVM content is transferred
into the internal registers within tpower-up (see P_3.2.0.11).
9.1
NVM characteristics
The required characteristics to program and verify the NVM are given in Table 9-1.
Table 9-1 Parameter NVM
All parameters are valid for: -40 °C < TJ < 150 °C; VBA = 14.5 V unless otherwise specified:
Parameter
Symbol
Values
Typ.
Unit Note or
Test Condition
Number
Min.
Max.
1)
Maximum Number
of program and erase
cycles
NPECyc
100
–
–
–
P_10.1.0.1
1)
Temperature range
for program and erase
TPE
0
25
–
80
40
°C
V
P_10.1.0.2
P_10.1.0.3
Voltage level at VBA
during program and
erase
VBAPE
32
–
Set voltage for “under-
voltage condition”
during program and
erase
VBAfailPE 27
–
32
V
–
P_10.1.0.4
1) Not subject to production test.
Attention: Programming and verification requires at least 32 V supply at VBA (refer to Table 9-1).
Data Sheet
89
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
9.2
NVM register description
The register descriptions of the NVM - which can be accessed via the programming mode - are presented and
described in this chapter.
9.2.1
List overview
Table 9-2 to Table 9-5 show a listed overview of all accessible NVM fields.
Data Sheet
90
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Table 9-2 List overview of accessible NVM fields (sorted by placement in the EEPROM)
Address Section Field
Short name
00H
00H
00H
00H
00H
00H
01H
01H
0
0
0
1
1
2
0
0
NVM-LINRX
NVM-ALT
LIN RX frame ID
Alternator number in vehicle LIN network
LIN version
NVM-LIN
NVM-LINTX1
NVM-RPARA_SEL
NVM-CFG
LIN TX1 frame ID
Selection of parameter set for F-PARA
OEM configuration
NVM-LINTX2
NVM-LRCBZ_0_SEL
LIN TX2 frame ID
LRC blind zone “0” selection
Table 9-3 List overview of accessible NVM fields (NVM-LIN=0B)
Address Section Field
Short name
01H
01H
01H
1
1
1
NVM-LINTX3
NVM-LEOLRC
NVM-AFIDen
LINTX3 frame ID
LRC after LEO function
“Assign frame ID” service disable
Table 9-4 List overview of accessible NVM fields (NVM-LIN=1B)
Address Section Field
Short name
01H
01H
01H
1
1
1
NVM-LINTX3
NVM-LEOLRC
NVM-3Ddis
LINTX3 frame ID
LRC after LEO function
Enable/disable 3D frame for LIN1.3
Table 9-5 List overview of accessible NVM fields (sorted by placement in the EEPROM)
Address Section Field
Short name
01H
02H
02H
02H
2
0
0
1
NVM-EOFF
Activation of excitation-off state
Alternator supplier
Alternator class
NVM-SUPP
NVM-CLASS
NVM-DC_EWMA_MODE
Excitation duty cycle filter mode during Phase Signal Boost
(PSB)
02H
02H
02H
02H
02H
03H
03H
03H
03H
1
1
1
1
2
0
0
0
1
NVM-DC_EWMA_K
NVM-RMS_report
NVM-MC_EWMA_K
NVM-MV_EWMA_K
NVM-PP
Excitation duty cycle filter coefficients
RMS reporting
Excitation current filter coefficients
Measurement voltage filter coefficients
Alternator pole pairs
NVM-HEO_ANdis
NVM-LRCRT
Disable analogue HEO function
LRC rise-time for default operation
LEO (Low-Voltage Excitation On) function disable switch
Type of VSET reporting selection
NVM-LEOTIMERdis
NVM-VSET_report
Data Sheet
91
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Table 9-5 List overview of accessible NVM fields (sorted by placement in the EEPROM) (cont’d)
Address Section Field
Short name
03H
03H
03H
03H
04H
04H
04H
04H
04H
04H
1
1
1
2
0
0
0
0
0
1
NVM-PREEXC_27HZ5_DIS Pre-excitation duty cycle selection
NVM-PEXCDC
NVM-LRCBZ
Duty cycle in pre-excitation state
Selection of the LRC blind zone in default operation state
Self-start speed threshold
NVM-SSS
NVM-LEO
Default VLOW for LEO function (Low Voltage Excitation ON)
LEO/F-EL interaction setting
NVM-LEO_ERR_EN
NVM-T_EL_ERR
NVM-HEO_ERR_EN
NVM-FROT_SEL
NVM-THT
Debounce time of electrical error flag (F-EL)
Overvoltage error flag switch
Configuration for the mechanical error flag F-ROT
Absolute threshold for high-temperature voltage
compensation
04H
04H
04H
05H
1
1
2
0
NVM-HTG
Gradient for high-temperature voltage compensation
Excitation overcurrent protection threshold
NVM-CLIM
NVM-T_PSB_ON_MAX
NVM-FEXLIM_PCLIM1
Maximum ON-time for PSB (Phase Signal Boost) function
Frequency dependent current limitation (FEXLIM) feature:
PCLIM1 region
05H
05H
0
0
NVM-FEXLIM_EN
Enable/disable frequency dependent current limitation
(FEXLIM) function
NVM-FEXLIM_PCLIM2
Frequency dependent current limitation (FEXLIM) feature:
PCLIM2 region
05H
05H
06H
06H
06H
1
2
0
0
0
Reserved
Reserved
Reserved
Reserved
NVM-LRCRT_1s
NVM-VSET
Enable 1s option for the default LRC rise time
Voltage set-point for default operation
DC_EWMA_mode_DC0
Excitation duty cycle filter mode during Phase Signal Boost
(PSB)
06H
06H
06H
1
1
1
NVM-CSHT
Disable curve shaping at high temperature
LRC fall-time
NVM-LRCFT
NVM-IEXC100
Minimum excitation current at 100% DC to avoid open load
detection
06H
07H
2
0
Reserved
Reserved
NVM-Speed_TH
Speed-dependent KiKp parameter sets (KiKp function) Speed
threshold - upper value of hysteresis
07H
07H
0
1
NVM-LRCDIS
NVM-VoKiKp
Rotor speed to disable LRC for default operation
Voltage dependent KiKp function (VoKiKp function)
configuration Enabling and VoKiKp up threshold
07H
07H
1
1
NVM-
Voltage dependent KiKp function (VoKiKp) speed
VoKiKp_low_HEO_speed dependency
NVM-KiKp KiKp function configuration
Data Sheet
92
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Table 9-5 List overview of accessible NVM fields (sorted by placement in the EEPROM) (cont’d)
Address Section Field
Short name
07H
1
NVM-LOW_HEO
Speed-dependent lowering of the HEO limit (LowHEO
function) Enabling and LowHEO voltage selection
07H
2
NVM-LOCK_EN
Enable NVM Lock
Data Sheet
93
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
9.2.2
Detailed description
NVM_A00_S0
Address 00H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-LIN
NVM-ALT
NVM-LINRX
rw
rw
rw
Field
Bits
Type Description
NVM-LINRX
5:0
rw
LIN RX frame ID
Default LIN RX frame ID (refer to Chapter 6.3.2).
NVM-ALT
6
7
rw
Alternator number in vehicle LIN network
Defines the alternator number in the vehicle LIN network. This switch
in independent from configuration of the LIN IDs, but relates to the LIN
2.1 NAD (refer to Chapter 6.7.2).
0B Device is configured to be regulator #1 in implemented LIN
network (NAD=46H),
1B Device is configured to be regulator #2 in implemented LIN
network (NAD=47H),
NVM-LIN
rw
LIN version
Selection of the compliance for the LIN communication standard
specification. This selection includes the usage of the classic or
enhanced checksum and the related protocol features.
(refer to Chapter 6.3.1)
0B LIN 2.1,
1B LIN 1.3,
Data Sheet
94
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
NVM_A00_S1
Address 00H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-RPARA_SEL
NVM-LINTX1
rw
rw
Field
Bits
Type Description
NVM-LINTX1
5:0
rw
LIN TX1 frame ID
Defines the LIN Identifier bits for the LIN TX1 frame. The relating parity
bits are calculated internally (refer to Chapter 6.3.2).
NVM-
RPARA_SEL
7:6
rw
Selection of parameter set for F-PARA
The F-Para function can be activated by sending respective code “1” in
LIN RX frame. If the F-Para function is active, a parameter set
with changed regulation dynamic is used (refer to Chapter 5.14).
00B Slowest dynamic,
01B Slower dynamic,
10B Slow dynamic,
11B Normal dynamic,
NVM_A00_S2
Address 00H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
Reserved
NVM-CFG
r
rw
Field
Bits
Type Description
rw OEM configuration
NVM-CFG
Reserved
1:0
Dedicated LIN frame layouts for the LIN RX/TX3/TX4 frame and internal
registers (e.g. default rise-time for the LRC function) can be adjusted by
using this switch (refer to Chapter 6.3.1).
00B VDA-A,
01B VDA-B,
10B OEM1,
11B OEM2,
7:2
r
Reserved
Reserved read-only area.
Data Sheet
95
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
NVM_A01_S0
Address 01H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
Reserved LRCBZ_0_SE
L
NVM-LINTX2
r
rw
rw
Field
Bits
Type Description
NVM-LINTX2
5:0
rw
LIN TX2 frame ID
Defines the LIN Identifier bits for the LIN TX2 frame. The relating parity
bits are calculated internally (refer to Chapter 6.3.2).
NVM-
6
rw
LRC blind zone “0” selection
LRCBZ_0_SEL
The blind zone of the LRC function can be adjusted via the LIN RX
frame. Depending on this NVM field, setting the blind zone code to “0”
inside the LIN RX frame (RF=0B in LIN RX frame) invokes respective blind
zone values (refer to Chapter 5.12).
0B 3%, Code “0” of the blind zone command invokes 3% blind zone
usage for the LRC function.
1B 6.25%, Code “0” of the blind zone command invokes 6.25% blind
zone usage for the LRC function.
Reserved
7
r
Reserved
Reserved read-only area
NVM_A01_S1 for NVM-LIN = 0B
Address 01H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-AFIDen NVM-LEOLRC
NVM-LINTX3
rw
rw
rw
Field
Bits
Type Description
NVM-LINTX3
5:0
rw
LINTX3 frame ID
Defines the LIN Identifier bits for the LIN TX3 frame. The relating parity
bits are calculated internally (refer to Chapter 6.3.2).
NVM-LEOLRC
6
rw
LRC after LEO function
Defines the behavior of the LRC function when returning to regulation
after a LEO activation (refer to Chapter 5.12).
0B
100% DC after LEO till Vset is reached,
1B Enable LRC after LEO,
Data Sheet
96
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
rw “Assign frame ID” service disable
NVM-AFIDen
7
“Assign frame ID” service is a dedicated LIN 2.1 service to re-assign
identifier for a LIN frame (refer to Chapter 6.7.3).
Note:
It is not recommended to use this service inside the real
application, since micro-cuts of the voltage supply would
lead to complete reset of the device including the reassign
frame identifier.
0B Assign frame ID disabled , for LIN 2.1 (recommended for higher
robustness)
1B Assign frame ID enabled, for LIN 2.1
NVM_A01_S1 for NVM-LIN = 1B
Address 01H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-3Ddis NVM-LEOLRC
NVM-LINTX3
rw
rw
rw
Field
Bits
Type Description
NVM-LINTX3
5:0
rw
LINTX3 frame ID
Defines the LIN Identifier bits for the LIN TX3 frame. The relating parity
bits are calculated internally (refer to Chapter 6.3.2).
NVM-LEOLRC
6
7
rw
LRC after LEO function
Defines the behavior of the LRC function when returning to regulation
after a LEO activation (refer to Chapter 5.12).
0B 100% DC after LEO till Vset is reached,
1B Enable LRC after LEO,
NVM-3Ddis
rw
Enable/disable 3D frame for LIN1.3
“3D disable” service is a dedicated LIN 1.3 service and used to
enable/disable the 3D special LIN frame (refer to Chapter 6.3.2).
0B 3D frame enabled, for LIN 1.3
1B 3D frame disabled, for LIN 1.3
NVM_A01_S2
Address 01H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
Reserved
NVM-EOFF
r
rw
Data Sheet
97
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
rw Activation of excitation-off state
NVM-EOFF
0
State machine can trigger the excitation-off state (EXC output stage is
switched off, DC=0%), if the command VSET=10.6 V is sent via LIN while
normal operation state is active. If this trigger activation is disabled,
the chip regulates to 10.6 V instead of changing to excitation-off state.
(refer to Chapter 4.4.6)
0B Deactivate, excitation-off state deactivated and VSET=10.6 V
does not trigger state change from normal operation to
excitation-off.
1B Activate, excitation-off state activated and enabled, if command
VSET=10.6 V is sent via LIN.
Reserved
7:1
r
Reserved
Reserved read-only area
NVM_A02_S0
Address 02H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-CLASS
NVM-SUPP
rw
rw
Field
Bits
Type Description
NVM-SUPP
2:0
rw
Alternator supplier
Free-configurable 3-bit value to set alternator supplier
NVM-CLASS
7:3
rw
Alternator class
Free-configurable 5-bit value to set alternator class
NVM_A02_S1
Address 02H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
DC_EWMA_M
ODE
NVM-
RMS_report
NVM-MV_EWMA_K
NVM-MC_EWMA_K
NVM-DC_EWMA_K
rw
rw
rw
rw
rw
Data Sheet
98
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
rw Excitation duty cycle filter mode during Phase Signal Boost (PSB)
NVM-
0
DC_EWMA_MO
DE
PSB is an internal function to maintain the phase signal and is not
relevant for computation models inside ECU. DC is used as model input
for most computations models, which is communicated via LIN TX
frames. If the phase signal falls below the PSB threshold (e.g. due to
voltage set-point below battery voltage level), the PSB function is
activated until phase signal has been backed up again. The EWMA
mode can be used to blank out this internal maintenance by using a
different input value during an activated PSB function (refer to
Chapter 6.6.1).
The option Input := 0 can be selected by DC_EWMA_mode_DC0.
0B Filter Input := DC from regulation, the EWMA filter will be fed
with DC from calculations coming out of the PI regulation (e.g. 0%
DC, if VSET < VBA ).
1B Filter Input := DC from pre-excitation, the EWMA filter will be
fed with a fixed DC as controlled by NVM-PEXCDC.
NVM-
DC_EWMA_K
2:1
rw
Excitation duty cycle filter coefficients
Enable/disable and cut-off frequency of the EWMA filter of the PWM
duty cycle (refer to Chapter 6.6.1).
00B None, (EWMA filter disabled)
01B 1 Hz, if NVM-CFG is “OEM1”
10B 5 Hz, if NVM-CFG is “OEM1”
11B 10 Hz, if NVM-CFG is “OEM1”
00B 35 ms, if NVM-CFG is not “OEM1”
01B 70 ms, if NVM-CFG is not “OEM1”
10B 140 ms, if NVM-CFG is not “OEM1”
11B 210 ms, if NVM-CFG is not “OEM1”
NVM-
RMS_report
3
rw
rw
RMS reporting
Selection of the RMS reporting style (refer to Chapter 6.4.12).
0B Classic reporting style,
1B Linear RMS reporting,
NVM-
MC_EWMA_K
5:4
Excitation current filter coefficients
Enable/disable and cut-off frequency of the EWMA filter of the
excitation current (refer to Chapter 6.6.3).
00B None, (EWMA filter disabled)
01B 1 Hz,
10B 5 Hz,
11B 10 Hz,
NVM-
MV_EWMA_K
7:6
rw
Measurement voltage filter coefficients
Enable/disable and cut-off frequency of the EWMA filter of the
measured voltage (refer to Chapter 6.6.2).
00B None, (EWMA filter disabled)
01B 1 Hz,
10B 5 Hz,
11B 10 Hz,
Data Sheet
99
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
NVM_A02_S2
Address 02H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
Reserved
NVM-PP
r
rw
Field
Bits
Type Description
rw Alternator pole pairs
NVM-PP
1:0
Number of pole pairs of the alternator, required to calculate the speed
of the alternator pulley (refer to Chapter 4.2).
00B 5 pole pairs,
01B 6 pole pairs,
10B 7 pole pairs,
11B 8 pole pairs,
Reserved
7:2
r
Reserved
Reserved read-only area
NVM_A03_S0
Address 03H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
LEOTIMERdis
NVM-
HEO_ANdis
Reserved
NVM-LRCRT
Reserved
rw
r
rw
rw
r
Field
Bits
Type Description
Reserved
1:0
r
Reserved
Reserved read-only area
NVM-
HEO_ANdis
2
rw
Disable analogue HEO function
(refer to Chapter 5.10)
0B Enabled,
1B Disabled,
NVM-LRCRT
5:3
rw
LRC rise-time for default operation
If the LIN communication is absent for longer than 3 seconds, the state
machine switches to default operation and uses the default LRC rise-
time setting (refer to Chapter 6.5).
The option 1 s can be selected by NVM-LRCRT_1s.
000B Disabled,
001B 2 s,
010B 3 s,
011B 4 s,
100B 5 s,
101B 6 s,
110B 7 s,
111B 8 s,
Data Sheet
100
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
Reserved
6
r
Reserved
Reserved read-only area
NVM-
LEOTIMERdis
7
rw
LEO (Low-Voltage Excitation On) function disable switch
To avoid charging a defective battery, a LEO start-up timer checks the
battery voltage and deactivates the LEO function in case of a
constantly low VBA (refer to Chapter 5.9).
0B LEO start-up timer enabled,
1B LEO start-up timer disabled,
NVM_A03_S1
Address 03H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
PREEXC_27H
Z5_DIS
NVM-
VSET_report
NVM-LRCBZ
NVM-PEXCDC
Reserved
rw
rw
rw
rw
r
Field
Bits
Type Description
Reserved
1:0
r
Reserved
Reserved read-only area
NVM-
VSET_report
2
3
rw
Type of VSET reporting selection
(refer to Chapter 6.4.2)
0B RX_LIN-VSET is reported,
1B Applied VSET is reported,
NVM-
PREEXC_27HZ5
_DIS
rw
rw
Pre-excitation duty cycle selection
While in pre-excitation state, a fixed duty cycle at the excitation output
stage is driven as adjusted in the NVM field NVM-PEXCDC. The carrying
frequency can be adjusted by using this switch (refer to Chapter 5.1).
0B 27 Hz, Pre-excitation duty cycle
1B 220 Hz, Pre-excitation duty cycle
NVM-PEXCDC
6:4
Duty cycle in pre-excitation state
Applied fixed duty cycle (RDC) while in pre-excitation state. The fixed
output frequency can be adjusted by the NVM field NVM-
PREEXC_27HZ5_DIS (refer to Chapter 4.4.4).
000B 5%,
001B 7.5%,
010B 10%,
011B 12.5%,
100B 15%,
101B 17.5%,
110B 20%,
111B 25%,
Data Sheet
101
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
rw Selection of the LRC blind zone in default operation state
NVM-LRCBZ
7
Selection of the desired LRC blind zone while in default operation state
(refer to Chapter 5.12).
0B 3% / 6.25%, depending on NVM field NVM-LRCBZ_0_SEL
1B 12%,
NVM_A03_S2
Address 03H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
Reserved
NVM-SSS
r
rw
Field
Bits
Type Description
rw Self-start speed threshold
NVM-SSS
1:0
In case of absent LIN communication, an emergency start function
assures proper operation of the regulator, if the TLE8881-2 is still in
standby mode (no alternator rotation). The detection threshold of this
emergency start function can be adjusted with this NVM field (physical
parameter: nCUT2) (refer to Chapter 4.2).
00B 2000 rpm,
01B 3000 rpm,
10B 4000 rpm,
11B 5000 rpm,
Reserved
7:2
r
Reserved
Reserved read-only area
NVM_A04_S0
Address 04H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
NVM-
NVM-
NVM-FROT_SEL
NVM-LEO
HEO_ERR_EN T_EL_ERR LEO_ERR_EN
rw
rw rw rw
rw
Data Sheet
102
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
NVM-LEO
2:0
rw
Default VLOW for LEO function (Low Voltage Excitation ON)
(refer to Chapter 5.9)
000B 8.75 V,
001B 9.0 V,
010B 9.25 V,
011B 9.5 V,
100B 9.75 V,
101B 10.0 V,
110B 10.25 V,
111B 10.5 V,
NVM-
LEO_ERR_EN
3
4
5
rw
rw
LEO/F-EL interaction setting
Enable/disable interaction of LEO and the electrical error flag F-EL
(refer to Chapter 4.5.3).
0B Deactivate, LEO cannot set to the F-EL flag.
1B Activate, LEO can set to the F-EL flag.
NVM-T_EL_ERR
Debounce time of electrical error flag (F-EL)
Sets the debounce time for the electrical error flag (refer to
Chapter 4.5.3).
0B 250 ms,
1B 1000 ms,
NVM-
HEO_ERR_EN
rw
rw
Overvoltage error flag switch
(refer to Chapter 4.5.3)
0B Deactivate, HEO does not set F-EL flag.
1B Activate, HEO sets the error flag F-EL, if active.
NVM-FROT_SEL 7:6
Configuration for the mechanical error flag F-ROT
(refer to Chapter 4.5.2)
00B F-ROT set in pre-excitation,
01B F-ROT set in ComActive, pre-excitation and EXC-OFF,
10B Reserved,
11B Reserved,
NVM_A04_S1
Address 04H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-CLIM
NVM-HTG
NVM-THT
rw
rw
r
Data Sheet
103
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
NVM-THT
2:0
r
Absolute threshold for high-temperature voltage compensation
This absolute threshold can be fine-tuned with relative adjustments by
LIN RX frame commands. This threshold marks the point to start the
high-temperature voltage compensation relatively to the 16 V
setpoint. For VSET < 16 V, the voltage setpoint will be compensated by
matching the compensation gradient (NVM field NVM-HTG) (refer to
Chapter 5.6).
000B 125°C,
001B 130°C,
010B 135°C,
011B 140°C,
100B 145°C,
101B 150°C,
110B 155°C,
111B 160°C,
NVM-HTG
5:3
rw
Gradient for high-temperature voltage compensation
As soon as the high-temperature threshold has been exceeded,
relatively to the 16 V setpoint a negative compensation gradient is
applied to the actual voltage setpoint (refer to Chapter 5.6).
000B -50 mV/K,
001B -100 mV/K,
010B -150 mV/K,
011B -200 mV/K,
100B -250 mV/K,
101B -300 mV/K,
110B -350 mV/K,
111B -400 mV/K,
NVM-CLIM
7:6
rw
Excitation overcurrent protection threshold
Current threshold for the activation of the overcurrent limitation
feature (refer to Chapter 5.2).
00B 9 A,
01B 10 A,
10B 11 A,
11B 12 A,
NVM_A04_S2
Address 04H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
Reserved
NVM-T_PSB_ON_MAX
r
rw
Data Sheet
104
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
rw Maximum ON-time for PSB (Phase Signal Boost) function
NVM-
1:0
T_PSB_ON_MA
X
Relating to Chapter 5.11, the phase signal boost function has a fixed
OFF-time and an adjustable ON-time (DC = 100%). The PSB function
helps to recover a low phase signal to assure a proper measurement of
the phase signal.
00B 155 ms,
01B 100 ms,
10B 45 ms,
11B 27 ms,
Reserved
7:2
r
Reserved
Reserved read-only area
NVM_A05_S0
Address 05H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
FEXLIM_EN
Reserved
NVM-FEXLIM_PCLIM2
NVM-FEXLIM_PCLIM1
r
rw
rw
Field
Bits
Type Description
NVM-
2:0
rw
Frequency dependent current limitation (FEXLIM) feature:
FEXLIM_PCLIM
1
PCLIM1 region
(refer to Chapter 5.13)
000B 5.5 A,
001B 6 A,
010B 6.5 A,
011B 7 A,
100B 7.5 A,
101B 8 A,
110B 8.5 A,
111B 9 A,
NVM-
3
rw
Enable/disable frequency dependent current limitation (FEXLIM)
FEXLIM_EN
function
(refer to Chapter 5.13)
0B FEXLIM is disabled,
1B FEXLIM is enabled,
Data Sheet
105
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
Frequency dependent current limitation (FEXLIM) feature:
NVM-
6:4
FEXLIM_PCLIM
2
PCLIM2 region
(refer to Chapter 5.13)
000B 5.5 A,
001B 6 A,
010B 6.5 A,
011B 7 A,
100B 7.5 A,
101B 8 A,
110B 8.5 A,
111B 9 A,
Reserved
7
r
Reserved
Reserved read-only area
NVM_A05_S1
Address 05H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
2
2
1
1
1
0
0
0
Reserved
r
Field
Bits
Type Description
Reserved
Reserved
7:0
r
Reserved read-only area
NVM_A05_S2
Address 05H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
Reserved
r
Field
Bits
Type Description
Reserved
Reserved
7:0
r
Reserved read-only area
NVM_A06_S0
Address 06H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
DC_EWMA_m
ode_DC0
NVM-
LRCRT_1s
Reserved
NVM-VSET
r
rw
rw
rw
Data Sheet
106
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
NVM-LRCRT_1s
0
rw
Enable 1s option for the default LRC rise time
Additional option for LRCRT (refer to NVM-LRCRT)
0B
1B
LRC default rise time defined by NVM-LRCRT,
1 s,
NVM-VSET
3:1
rw
Voltage set-point for default operation
If the LIN communication is absent for longer than 3 seconds, the state
machine switches to default operation and uses the default voltage
setpoint setting, VSET (refer to Chapter 6.5).
000B 13.5 V,
001B 13.7 V,
010B 13.9 V,
011B 14.1 V,
100B 14.3 V,
101B 14.5 V,
110B 14.7 V,
111B 14.9 V,
DC_EWMA_mod 4
e_DC0
rw
r
Excitation duty cycle filter mode during Phase Signal Boost (PSB)
Additional option for the DC_EWMA_mode (refer to NVM-
DC_EWMA_MODE)
0B Filter input controlled by DC_EWMA_mode,
1B Filter input = 0, EWMA filter will be fed with 0% DC during PSB
Reserved
7:5
Reserved
Reserved read-only area
NVM_A06_S1
Address 06H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-LRCFT
NVM-IEXC100
rw
NVM-CSHT
Reserved
rw
rw
r
Field
Bits
Type Description
Reserved
2:0
r
Reserved
Reserved read-only area
NVM-CSHT
3
rw
Disable curve shaping at high temperature
(refer to Chapter 5.2)
0B
1B
Curve shaping at Tj > 135°C enabled,
Curve shaping at Tj > 135°C disabled,
Data Sheet
107
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
NVM-IEXC100
5:4
rw
Minimum excitation current at 100% DC to avoid open load
detection
(refer to Chapter 5.2)
00B 0.75 A,
01B 1 A,
10B 1.25 A,
11B 1.50 A,
NVM-LRCFT
7:6
rw
LRC fall-time
The falling gradient is defined as the ramp-down time to go from 100%
to 0% DC value. The falling gradient is not seen at the output DMOS, but
is only calculated internally (refer to Chapter 5.12).
00B 1 s,
01B 2 s,
10B 2.5 s,
11B 3 s,
NVM_A06_S2
Address 06H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
Reserved
r
Field
Bits
Type Description
Reserved
Reserved
7:0
r
Reserved read-only area
NVM_A07_S0
Address 07H - Section 0
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
Reserved
NVM-LRCDIS
NVM-Speed_TH
r
rw
rw
Data Sheet
108
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
NVM-Speed_TH 2:0
rw
Speed-dependent KiKp parameter sets (KiKp function)
Speed threshold - upper value of hysteresis
Nswitch2 = Nswitch1 + 400 rpm;
Nswitch3 = Nswitch1 + 800 rpm;
lower limit of hysteresis 200 rpm (refer to Chapter 5.15)
000B Nswitch1 = 2000 rpm,
001B Nswitch1 = 2200 rpm,
010B Nswitch1 = 2400 rpm,
011B Nswitch1 = 2600 rpm,
100B Nswitch1 = 2800 rpm,
101B Nswitch1 = 3000 rpm,
110B Nswitch1 = 3200 rpm,
111B Nswitch1 = 3400 rpm,
NVM-LRCDIS
4:3
rw
Rotor speed to disable LRC for default operation
If the LIN communication is absent for longer than 3 seconds, the state
machine switches to default operation and uses the default speed
setting to disable the LRC function (physical parameter: nLRCDIS, refer to
Chapter 5.12).
00B 3000 rpm,
01B 4000 rpm,
10B 4800 rpm,
11B 6000 rpm,
Reserved
7:5
r
Reserved
Reserved read-only area
NVM_A07_S1
Address 07H - Section 1
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
VoKiKp_low_
HEO_speed
NVM-VoKiKp
NVM-KiKp
NVM-LOW_HEO
rw
rw
rw
rw
Field
Bits
Type Description
rw
NVM-LOW_HEO 1:0
Speed-dependent lowering of the HEO limit (LowHEO function)
Enabling and LowHEO voltage selection
For Nswitch1 = 0 (refer to Chapter 5.17)
00B 15.5 V,
01B 15.65 V,
10B 15.75 V,
11B Low HEO function is disabled,
Data Sheet
109
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
NVM-KiKp
3:2
rw
KiKp function configuration
(refer to Chapter 5.15)
00B KiKp disabled,
01B Simple KiKp function with KiKp set = slowest,
10B Simple KiKp function with KiKp set = slower,
11B Three stage KiKp function,
NVM-
VoKiKp_low_H
EO_speed
4
rw
rw
Voltage dependent KiKp function (VoKiKp) speed dependency
Activates / deactivates the speed dependency for the VoKiKp and
LowHEO functions (refer to Chapter 5.16).
0B Speed dependency enabled,
1B Speed dependency disabled,
NVM-VoKiKp
7:5
Voltage dependent KiKp function (VoKiKp function) configuration
Enabling and VoKiKp up threshold
The VoKiKp down threshold is 0.1 V lower. For options 101B, 110B and
111B the VoKiKp down threshold is 0.1V lower than the positive value
and 0.1V higher than the negative value (refer to Chapter 5.16).
000B VoKiKp disabled,
001B 0.35 V,
010B 0.5 V,
011B 0.65 V,
100B 0.8 V,
101B +/- 0.5V, VoKiKp is activated for an upper and lower threshold
110B +/- 0.75V, VoKiKp is activated for an upper and lower threshold
111B +/- 1V, VoKiKp is activated for an upper and lower threshold
NVM_A07_S2
Address 07H - Section 2
(00H)Reset Value: 00H
7
6
5
4
3
2
1
0
NVM-
LOCK_EN
Reserved
Reserved
rw
r
Field
Bits
Type Description
Reserved
0
r
Reserved
Reserved read-only area
NVM-LOCK_EN
1
rw
Enable NVM Lock
Setting this NVM field makes the NVM write-protected and protect it
from any modification afterwards.
Note:
Once this bit is set, the NVM will get write-protected. It is not
possible to release the write-protection once it has been set.
0B NVM can be programmed,
1B NVM is locked,
Data Sheet
110
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Non-Volatile Memory (NVM)
Field
Bits
Type Description
Reserved
Reserved
7:2
Reserved read-only area
Data Sheet
111
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Application information
10
Application information
Note: The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
This is the description how the TLE8881-2 is used in its alternator environment.
B+A
B+A
Vehicle
Loads
Battery
PH
VBA
EXC
Alternator
Control IC
GND
LIN
Alternator
Alternator
speed
BUS
GND
Engine
LIN
interface
ECU (Engine or Energy Control Unit)
Figure 26 Application diagram
Note: This is a very simplified example of an application circuit. The function must be verified in the real
application.
The TLE8881-2 regulates the alternator output to an adjustable reference voltage. The regulation is achieved
by varying the magnetization in the alternator. The magnetization is dependent on the current in the rotor
winding (excitation). The current is dependent on the duty cycle of the excitation high-side output (terminal
EXC).
The TLE8881-2 supply (VBA) is connected to the alternator output. The filtered supply voltage is the feedback
voltage used by the control circuit.
One of three stator winding voltages (PH) is connected to the TLE8881-2. The phase input is used for the rotor
speed measurement and stator monitoring, as well as the self-start detection.
Data Sheet
112
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Application information
10.1
EMC and ESD
ISO and ESD pulses are applied to the alternator. The TLE8881-2 does not see all disturbances at its pins due
to connectors, the alternator and the diodes. The sensitivity depends on the TLE8881-2 and the complete
alternator system.
B+A
B+A
ALTERNATOR
VBA
PH
LIN
Alternator Control IC
EXC
BRUSHHOLDER
GND
GND
Figure 27 Application overview for EMC
The stated intend is to ensure all EMC and ESD requirements without any TLE8881-2 external devices.
The external passive devices indicate their possible use only.
In the car system, the TLE8881-2 will be used as a LIN-Slave.
The device will be tested or referenced according to the VDA Test Spec “2009-12-02 Common EMC-
requirements on LIN-Interfaces” at IBEE Zwickau.
10.2
Further application information
•
For further information you may contact https://www.infineon.com
Data Sheet
113
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Package information
11
Package information
0.2
10
A
0.2
9.9
B
8.51)
4.4
3.7 -0.15
1.27 0.1
0...0.3
0.05
2.4
C
0.1
0.5
0...0.15
4 x 1.7
2.4
0.1
5 x 0.8
M
0.25
A B C
1)
Typical
Metal surface min. X = 7.25, Y = 12.3
Figure 28 PG-TO-220-5-12 Straight Leads1)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant
with government regulations the device is available as a green product. Green products are RoHS-Compliant
(i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
Further information on packages
https://www.infineon.com/packages
1) Dimensions in mm
Data Sheet
114
Rev. 1.00
2019-05-29
TLE8881-2
Alternator Control IC with LIN Interface
Revision history
12
Revision history
Revision
Date
Changes
1.00
2019-05-29 Datasheet released
Data Sheet
115
Rev. 1.00
2019-05-29
Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
IMPORTANT NOTICE
The information given in this document shall in no For further information on technology, delivery terms
Edition 2019-05-29
Published by
Infineon Technologies AG
81726 Munich, Germany
event be regarded as a guarantee of conditions or and conditions and prices, please contact the nearest
characteristics ("Beschaffenheitsgarantie").
Infineon Technologies Office (www.infineon.com).
With respect to any examples, hints or any typical
values stated herein and/or any information regarding
the application of the product, Infineon Technologies
hereby disclaims any and all warranties and liabilities
of any kind, including without limitation warranties of
non-infringement of intellectual property rights of any
third party.
In addition, any information given in this document is
subject to customer's compliance with its obligations
stated in this document and any applicable legal
requirements, norms and standards concerning
customer's products and any use of the product of
Infineon Technologies in customer's applications.
The data contained in this document is exclusively
intended for technically trained staff. It is the
responsibility of customer's technical departments to
evaluate the suitability of the product for the intended
application and the completeness of the product
information given in this document with respect to
such application.
WARNINGS
Due to technical requirements products may contain
dangerous substances. For information on the types
in question please contact your nearest Infineon
Technologies office.
© 2019 Infineon Technologies AG.
All Rights Reserved.
Do you have a question about any
aspect of this document?
Email: erratum@infineon.com
Except as otherwise explicitly approved by Infineon
Technologies in a written document signed by
authorized representatives of Infineon Technologies,
Infineon Technologies’ products may not be used in
any applications where a failure of the product or any
consequences of the use thereof can reasonably be
expected to result in personal injury.
Document reference
Doc_Number
相关型号：
TLE8888-2QK
It contains all necessary items for an electronic control unit for 4 cylinder automotive engine management systems. TLE8888 includes state of the art communication interfaces, ECU and sensor supply functions and the output drivers for solenoids, injectors, relays and stepper motors. In addition to that there are advanced diagnosis features and functions implemented into the TLE8888 for optimum use in a modern engine management system.
INFINEON
TLE8888QK
It contains all necessary items for an electronic control unit for 4 cylinder automotive engine management systems. TLE8888 includes state of the art communication interfaces, ECU and sensor supply functions and the output drivers for solenoids, injectors, relays and stepper motors. In addition to that there are advanced diagnosis features and functions implemented into the TLE8888 for optimum use in a modern engine management system.
INFINEON
©2020 ICPDF网 联系我们和版权申明