TLE4959-5U-FX [INFINEON]
Our Infineon XENSIVTM TLE4959-5U FX is an integrated differential Hall magnetic speed sensor ideally suited for transmission applications.Its basic function is to provide information about rotational speed and direction of rotation to thetransmission control unit. TLE4959-5U FX includes a sophisticated algorithm which actively suppresses vibration while keeping excellent air-gap performance.;型号: | TLE4959-5U-FX |
厂家: | Infineon |
描述: | Our Infineon XENSIVTM TLE4959-5U FX is an integrated differential Hall magnetic speed sensor ideally suited for transmission applications.Its basic function is to provide information about rotational speed and direction of rotation to thetransmission control unit. TLE4959-5U FX includes a sophisticated algorithm which actively suppresses vibration while keeping excellent air-gap performance. |
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TLE4959-5U FX FlexibleTransmission
Speed Sensor
Features
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Hall based differential speed sensor
High magnetic sensitivity
Large operating airgap
Dynamic self-calibration principle
Adaptive hysteresis
Output protocol with and without direction of rotation detection
High vibration suppression capabilities
Three wire voltage interface
Magnetic encoder and ferromagnetic wheel application
High immunity against ESD, EMC and mechanical stress, improved voltage dropout capability
Automotive operating temperature range
End-of-line programmable to adjust transmission requirements
Green Product (RoHS compliant)
AEC Qualified
Applications
The TLE4959-5U FX is an integrated differential Hall speed sensor ideally suited for transmission applications.
Its basic function is to provide information about rotational speed and direction of rotation to the
transmission control unit. TLE4959-5U FX includes a sophisticated algorithm which actively suppresses
vibration while keeping excellent airgap performance.
Table 1
Type
Description
Marking
Ordering Code
Package
TLE4959-5U FX
59AYA1
SP001040496
PG-SSO-4-1
Data Sheet
www.infineon.com/sensors
1
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Description
The TLE4959-5U FX comes in a RoHs compliant four-pin package, qualified for automotive usage. the
recommended capacitors increase the EMC robustness of the device. In 12 V applications it is further
recommended to use a serial resistor RSupply for protection on the supply line. A pull-up resistor RLoad is
mandatory on the output pin and determines the maximum current flowing through the output transistor. A
value of 1.2 kΩ is recommended for the 5V application. (see Figure 1)
Option for 12V
Vpullup
VS
RLOAD
1.2 kΩ
RSupply
100 ...330Ω
RQ
VDD
150 ... 220Ω
IQ
C
V
DD
Q
GND
100...470nF
VQ
CQ
1.8 ... 4.7nF
Figure 1
Typical Application Circuit
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Functional Description
1
Functional Description
The differential Hall sensor IC detects the motion of tooth and magnet encoder applications. To detect the
motion of ferromagnetic objects, the magnetic field must be provided by a back biasing permanent magnet.
Either south or north pole of the magnet can be attached to the rear unmarked side of the IC package (See
Figure 2). The magnetic measurement is based on three equally spaced Hall elements, integrated on the IC.
Both magnetic and mechanical offsets are cancelled by a self calibration algorithm.
1.1
Definition of the Magnetic Field Direction
The magnetic field of a permanent magnet exits from the north pole and enters the south pole. If a north pole
is attached to the backside of the High End Transmission Sensor, the field at the sensor position is positive, as
shown in Figure 2.
Notch
Tooth
Notch
Notch
Tooth
Notch
IC Branded
Side
N
S
S
IC Branded
Side
N
Figure 2
Definition of the Positive Magnetic Field Direction
1.2
Block Diagram
PMU:
VDD
Chopper switches
Separated supplies
Bandgap (Temp. Compensated)
GND
Q
Digital-Core:
Min/Max-detection
Offset-calculation
Compensated
Amplifier and
Tracking ADC
Diff. Hall
Speed-sensing
Hysteresis-calculation
Offset compensation
Direction detection
Vibration suppression
Output-protocol
Open
Drain
EEPROM
Hall
Direction-
sensing
Compensated
Amplifier and
Tracking ADC
Figure 3
Block Diagram
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Functional Description
1.3
Basic Operation
The speed signal calculated out of the differential hall elements, is amplified, filtered and digitized. An
algorithm in the digital core for peak detection and offset calculation will be executed. The offset is fed back
into the speed signal path with a digital to analog converter for offset correction. During uncalibrated mode,
the output of the speed pulse is triggered in the digital core by exceeding a certain threshold of the tracking
ADC. In calibrated mode the output is triggered by the visible hysteresis.
The direction signal is calculated out of center Hall signals. The direction signal is amplified, filtered, and
digitized. In the digital core the direction and the vibration detection information is determined and the
output protocol is issued.
1.4
Uncalibrated and Calibrated Mode
After power on the differential magnetic speed signal is tracked by an analog to digital converter (Tracking
ADC) and monitored within the digital core. If the signal slope is identified as a rising edge or falling edge, the
first output pulse is triggered. A second trigger pulse is issued with direction information.
In uncalibrated mode, the output protocols are triggered by the DNC (detection noise constant) in the speed
path. After start up the sensor switches with the DNC min value and after that the DNC is adapted to the
magnetic input signal amplitude.
The offset update starts if two valid extrema values are found and the direction of the update has the same
orientation as the magnetic signal. For example, a positive offset update is being issued on a rising magnetic
edge only. After a successful offset correction, the sensor is in calibrated mode. Switching occurs at the
adaptive hysteresis threshold level.
In calibrated mode, the DNC is adapted to magnetic input signal amplitude with a minimum of
ΔBlimit . The output pulses are then triggered with adaptive hysteresis.
1.5
Hysteresis Concept
The adaptive hysteresis is linked to the input signal. Therefore, the system is able to suppress switching if
vibration or noise signals are smaller than the adaptive hysteresis levels. The typical value for the hysteresis
level is 1/4 of the magnetic input signal amplitude, the minimum hysteresis level is ΔBlimit
.
The visible hysteresis keeps the excellent performance in large pitch transmission application wheels.
Hysteresis = 0.25 * ΔBpp (peak to peak )
10
magnetic input signal
hysteresis HI
hysteresis LO
8
ΔBz,diff
6
4
2
0
-2
-4
-6
-8
-10
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
time [s]
Figure 4
Adaptive Hysteresis
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Functional Description
1.6
Rotational Direction
The direction signal is digitized by an analog to digital converter (direction ADC) and fed into the digital core.
Depending upon the rotation direction of the target wheel, the signal of the center probe anticipates or lags
behind for 90°. This phase relationship is evaluated and converted into rotation direction information by
sampling the signal of the center probe in the proximity of the zero crossing of the “speed” bridge signal.
The first pulse after power has a different length to signalize that there is no direction information available.
1.7
Vibration Suppression
The magnetic signal amplitude and the direction information are used for detection of parasitic magnetic
signals. Unwanted magnetic signal can be caused by angular or air gap vibrations. If an input signal is
identified as a vibration the output pulse will be suppressed.
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
General Characteristics
2
General Characteristics
2.1
Absolute Maximum Ratings
Table 2
Absolute Maximum Ratings
Parameter
Symbol
Values
Typ. Max.
Unit Note or Test Condition
Min.
Supply voltage without VDD
supply resistor
-16
–
18
27
V
V
V
V
V
V
V
V
°C
continuous, TJ ≤ 175°C
max. 60 s, TJ ≤ 175°C
-18
-1.0
-0.3
–
max. 60 s, TJ ≤ 175°C
Output OFF voltage
Output ON voltage
VQ_OFF
VQ_ON
–
–
–
–
–
–
max. 1 h,TAmb ≤ 40°C
26.5
16
continuous, TJ ≤ 175°C
continuous, TAmb ≤ 40°C
max. 1 h, TAmb ≤ 40°C
–
18
–
26.5
185
max. 60 s, TAmb ≤ 40°C
exposure time: max. 10 × 1 h, VDD = 16V
Junction temperature
range
TJ
-40
Magnetic field induction BZ
-5
–
5
T
magnetic pulse during magnet
magnetization;
valid 10 s with Tambient ≤ 80°C
ESD compliance
ESDHBM
-2
–
2
kV
HBM1)
1) ESD susceptibility, HBM according to EIA/JESD 22-A114B
Note:
Stresses above the max values listed here may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability. Maximum
ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to
the integrated circuit.
Data Sheet
6
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TLE4959-5U FX FlexibleTransmission Speed Sensor
General Characteristics
2.2
Operating Range
All parameters specified in the following sections refer to these operating conditions unless otherwise
specified.
Table 3
General Operating Conditions
Symbol
Parameter
Values
Unit Note or Test Condition
Min. Typ. Max.
Supply voltage without supply
resistance Rs
VDD
4.0
–
16
V
V
Continuous Output Off voltage
VQ_OFF
-
–
–
16
Supply voltage power- up/down
voltage ramp
dVDD/dt
3.0
1e4 V/ms
Supply current
IDD
IQ_ON
f
8.0
–
–
–
13.4 mA
Continuous output On current
Magnetic signal frequency range
15
10
4.3
mA VQ_LOW < 0.5 V
0
0
kHz
Frequency range for direction
detection (hystersis)once high
speed has been selected
fDir
kHz increasing rotational
frequency
0
4
kHz decreasing rotational
frequency
Maximum number of EEPROM
programming cycles
NPROG
100
n
Dynamic range of the magnetic field DRmag_field_s -120
of the differential speed channel
-
-
-
-
-
–
-
120 mT
60 mT
Dynamic range of the magnetic field DRmag_field_dir -60
of the direction channel
Static range of the magnetic field of SRmag_field_s
0
550 mT
450 mT
the outer Hall probes
Static range of the magnetic field of DRmag_field_dir -100
the center Hall probe
Allowed static difference between
outer probes
SRmag_field_diff -30
30
mT
Normal operating junction
temperature
TJ
-40
-
175 °C
185 °C
exposure time: max. 2500 h
at TJ = 175°C, VDD = 16 V
exposure time: max.
10 × 1 h at TJ = 185°C,
VDD = 16 V, additive to other
lifetime
Not operational lifetime
Tno
-40
150 °C
without sensor function;
exposure time max 500 h @
150°C; increased time for
lower temperatures
according to Arrhenius-
Model, additive to other
lifetime
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
General Characteristics
Table 3
General Operating Conditions (cont’d)
Parameter
Symbol
Values
Min. Typ. Max.
Unit Note or Test Condition
Ambient temperature range for
device features reading and
programming
TRDPROG
15
25
130 °C
during programming at
customer
Temperature compensation range TC
of magnetic material
-600
ppm internal compensation of
magnetic signal amplitude
of speed signal
Note:
In the operating range the functions given in the functional description are fulfilled
Data Sheet
8
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Electrical and Magnetic Characteristics
3
Electrical and Magnetic Characteristics
All values specified at constant amplitude and offset of input signal, over operating range, unless otherwise
specified. Typical values correspond to VS = 5 V and TAmb. = 25°C
Table 4
Electrical and Magnetic Parameters
Symbol
Parameter
Values
Unit
Note or Test Condition
Min. Typ.
Max.
500
–
Output saturation voltage
VQsat
0
-
mV
V
IQ ≤ 15 mA
Clamping voltage VDD-Pin
VDD_clamp
42
leakage current through ESD
diode < 0.5mA
Clamping voltage VQ-Pin
VQclamp
42
-
V
leakage current through ESD
diode < 0.5mA
Reset voltage
VDD_reset
IQleak
2.8
0
3.6
10
80
V
Output leakage current
0.1
-
µA
mA
VQ = 18 V
Output current limit during
short-circuit condition
IQshort
30
Junction temperature limit for Tprot
output protection
190
0.8
10
-
205
1
°C
Power on time
tpower_on
0.9
14
ms
µs
during this time the output is
locked to high.
Delay time between magnetic tdelay
signal switching point and
19
corresponding output signal
falling edge switching event
Output fall time
tfall
2.0
3.2
4
2.5
4.5
–
3.0
5.8
µs
µs
VPullup = 5 V, RPullup = 1.2 kΩ (+/-
10%), CQ = 1.8 nF (+/-15%),
valid between 80% - 20%
V
Pullup = 5 V, RPullup = 1.2 kΩ (+/-
10%), CQ = 1.8 nF (+/-15%),
valid between 90% - 10%
1)
Output rise time
trise
11.4 µs
RPullup = 1.2 kΩ (+/-10%),
CQ = 1.8 nF (+/-15%),
valid between 10% - 90%
Digital noise constant of speed DNCmin
channel during start up
1.22
1.5
25
1.78 mT
Adaptive hysteresis threshold HYSadaptive
%
%
EEPROM
“HYST_ADAPT”Option 0
12.5
EEPROM
“HYST_ADAPT”Option 1
Period Jitter, f ≤ 8 kHz2)
Period Jitter, 8kHz ≤f ≤ 10kHz2) Jit10kHz
Jit8kHz
-1
-1.1
–
–
–
–
–
1
%
%
n
1 sigma, ΔBpkpk = 3mT
1.1
0
1 sigma, ΔBpkpk = 3mT
Number of wrong pulses at
start-up
nStart
in forward rotational direction
0
1
n
in backward rotational
direction
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Electrical and Magnetic Characteristics
Table 4
Electrical and Magnetic Parameters (cont’d)
Parameter
Symbol
Values
Min. Typ.
Unit
Note or Test Condition
Max.
Global run out3)
Runoutglob
0
–
40
%
%
of magnetic speed signal
amplitude
al,speed
0
–
60
of magnetic speed signal
amplitude with reduced
performance on stand-still
functionality
Runoutglob
0
0
–
–
40
60
%
%
of magnetic direction signal
amplitude
al,dir
of magnetic direction signal
amplitude with reduced
performance on stand-still
functionality
Tooth to tooth run out (peak to Runouttooth
0
0
–
–
40
40
%
%
of magnetic speed signal
amplitude
peak variation on two
,speed
consecutive teeth / pole-pair)3)
Runouttooth
of magnetic direction signal
amplitude
,dir
1) Application parameter, IC shall not increase the rise time, Values are calculated and not tested
2) Parameter not subject to productive test. Verified by lab characterization based on jitter-measurement > 1000
periods
3) Defined as 1-(amplitude_min/amplitude_max)
Note:
The listed Electrical and magnetic characteristics are ensured over the operating range of the
integrated circuit. Typical characteristics specify mean values expected over the production spread.
If not other specified, typical characteristics apply at TAmb = 25°C and VS = 5 V.
3.1
Output protocols
TLE4959-5U FX provides the option to select output protocol without direction detection. As well as the
following direction detection options where the direction is provided via PWM protocol.
Table 5
Option 1
Parameter
Symbol
Values
Min. Typ.
Unit
Note or Test Condition
Max.
Output pulse in forward
direction
tfwd
38
45
52
µs
µs
µs
Output pulse in backward
direction
tbwd
114
153
135
180
155
207
Power on pulse
tpower-on
Data Sheet
10
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Electrical and Magnetic Characteristics
Table 5
Option 1 (cont’d)
Parameter
Symbol
thigh_speed 25.5
Values
Unit
Note or Test Condition
Min. Typ.
Max.
34.5 µs
Output pulse at High speed
Stand still pulse
30
pulse available after High
speed option has been
selected
tstand-still
51
60
69
µs
pulse available stand still after
pulse option has been
selected. Pulse delivered if no
relevant magnetic signal
change has been detected
within 50ms
Note:
VPullup = 5 V, RPullup = 1.2 kΩ (+/-10%), CQ = 1.8 nF (+/-15%), valid between 50% of falling edge to
50% of next rising edge
Table 6
Option 2
Parameter
Symbol
Values
Min. Typ.
Unit
Note or Test Condition
Max.
Output pulse in forward
direction
tfwd
38
45
52
µs
µs
µs
Output pulse in backward
direction
tbwd
153
38
180
45
207
52
Output pulse at High speed
tstand-still
pulse available after High
speed option has been
selected
Attention: First pulse after magnetic edge suppressed
Note:
VPullup = 5 V, RPullup = 1.2 kΩ (+/-10%), CQ = 1.8 nF (+/-15%), valid between 50% of falling edge to
50% of next rising edge
Table 7
Option 3
Parameter
Symbol
Values
Min. Typ.
Unit
Note or Test Condition
Max.
Output pulse in forward
direction
tfwd
51
60
69
µs
µs
Output pulse in backward
direction
tbwd
102
120
138
Power on pulse
tpower-on
25.5
30
30
34.5 µs
34.5 µs
Output pulse at High speed
thigh_speed 25.5
pulse available after High
speed option has been
selected
Data Sheet
11
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Electrical and Magnetic Characteristics
Note:
VPullup = 5 V, RPullup = 1.2 kΩ (+/-10%), CQ = 1.8 nF (+/-15%), valid between 50% of falling edge to
50% of next rising edge
Table 8
Option 4
Parameter
Symbol
Values
Min. Typ.
Unit
Note or Test Condition
Max.
Output pulse in forward
direction
tfwd
38
45
52
µs
Output pulse in backward
direction
tbwd
76.5
153
90
103.5 µs
Power on pulse
tpower-on
180
45
207
52
µs
µs
Output pulse at High speed
thigh_speed 38
pulse available after High
speed option has been
selected
Note:
VPullup = 5 V, RPullup = 1.2 kΩ (+/-10%), CQ = 1.8 nF (+/-15%), valid between 50% of falling edge to
50% of next rising edge
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
EEPROM Functional Description
4
EEPROM Functional Description
4.1
Serial Interface
The serial interface is used to set parameter and to program the sensor IC, it allows writing and reading of
internal registers. Data transmission to the IC is done by supply voltage modulation, by providing the clock
timing and data information via only one line. Data from the IC are delivered via the output line, triggered by
as well clocking the supply line. In normal application operation the interface is not active, for entering that
mode a certain command right after power-on is required.
A detailed document (TLE4959C FX EEPROM Programming Guide) is available on request. It contains the
description of electrical timing and voltage requirements, as well as the information about data protocol,
available registers and addresses.
4.1.1
Data Transmission
Commands to the sensor are sent by modulating the supply voltage between two levels VDD,high and VDD,low
.
They are sent in series of 17 pulses corresponding to 16 bit words, with MSB transmitted first and LSB last,
respectively the stop bit. Each of the 16 pulses is coded by the duty cycle as logical “0” or “1”. Logical "1" is
represented by a duty cycle of 2/3 of the period on VDD,high, logical “0” is represented by a duty cycle of 1/3 at
VDD,high. This forms the bit information and acts also as serial interface clock. Data transmission from the device
is represented by the state of the output, high for logical “1” and low for logical “0”. Recommended period
length is around 200 (tbd) µs per bit.
End of word is indicated by a long "low" supply (> 750 ms, first 30 ms should be > VDD,high, remaining time
< VDD,low). Please note, that for transmission of 16 data bits in total 17 pulses on VDD are necessary. If more than
16 input bits are transmitted the output bits are irrelevant (transmission buffer empty), whereas the input bits
remain valid and start overwriting the previously transmitted bits. In any case the last 17 transmitted bits are
interpreted as transmitted data word (16 bit) + 1 stop bit.
t
0
Supply ,enter
0
0
0
1
0
0
1
1
0
1
1
1
0
MSB
LSB Stop_bit=0
tON
t
bit
t
bit
tbit
tbit
t
bit
t
bit
tSupplyhigh,exit
t
high
t
low
tdig_reset
VDD
VDD,high
tstop
VDD,low
pulse1……
pulse17
0
time
VQ
MSB
LSB
Figure 5
Serial Protocol
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
EEPROM Functional Description
4.2
EEPROM Description
Several options of TLE4959C FX can be programmed via an EEPROM to optimize the sensor algorithm to the
individual target wheel and application requirements. The EEPROM memory is organized in 2 customer lines.
Each line is composed of 16 data bits and additional 6 bits for error detection and correction, based on ECC
(Error Correction Code). For more detailed information about EEPROM access and programming an additional
document is available on request.
Table 9
EEPROM Address 0x0
13 12 11 10
15
14
9
8
7
6
5
4
3
2
1
0
Table 10
Field
Functional Description Address 0x0
Bit
15
14
13
Type Description
Default value
Not used
Not used
HIGH_SPEED
r
Always read as “0”
To be set to “0”
0
0
0
rw
rw
0 = Enabled motion detection
1 = According selected protocol when above
4.3kHz
Not used
12
11
rw
rw
To be set to “0”
0
0
STAND_EN
0=disable stand-still pulse
1=enable stand-still pulse
Stand still pulse is provided, if enabled, only
if PW_CHIOICE=00
Not used
10..0 rw
To be set to “00000000000”
00000000000
Table 11
EEPROM Address 0x1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Table 12
Field
Functional Description Address 0x1
Bit
Type Description
Default value
Not used
PW_CHOICE
15:14 rw
13:12 rw
To be set to “01”
01
11
Choice of PWM protocol for direction
detection.
00 = Option 1
01 = Option 2
10 = Option 3
11 = Option 4
FORWARD_DEF
EDGE_POLAR
HYST_ADAPT
11
10
9
rw
rw
rw
0 = None invertion of forward definition
1 = Invertion of forward definition
0
0
1
0 = None invertion
1 = Invertion
0 = 25%
1 = 12.5%
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
EEPROM Functional Description
Table 12
Field
Functional Description Address 0x1 (cont’d)
Bit Type Description
8.. 5 rw
Default value
Not used
DNC_ADAPT
To be set to “1101”
1101
0
4
rw
DNC Adaption:
0 = 25%
1 = 12.5%
Not used
3
2
rw
rw
To be set to “0”
0
1
DIR_ENABLE
0 = Direction detection off
1 = Direction detection on
Not used
LOCK
1
0
rw
rw
To be set to “1”
1
0
0 = User area of EEPROM is unlocked
1 = User area of EEPROM is locked (no
reprogramming possible)
Data Sheet
15
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Package Information
5
Package Information
Pure tin covering (green lead plating) is used. The product is RoHS (Restriction of Hazardous Substances)
compliant and marked with letter G in front of the data code marking and may contain a data matrix code on
the rear side of the package (see also information note 136/03). Please refer to your key account team or
regional sales if you need further information.
The specification for soldering and welding is defined in the latest revision of application note
“Recommendation for Board Assembly-Hallsensor SSO Packages”.
5.1
Package Outline
Figure 6
PG-SSO-4-1 (Plastic Green Single Slim Outline), Package Dimensions
Figure 7
Position of the Hall Elements and distance to the branded Side
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Package Information
5.2
Marking and Data Matrix Code
Figure 8
Table 13
Marking of PG-SSO-4-1 Package
Pin Description
Pin Number1)
Symbol
VDD
Function
1
2
3
4
Supply Voltage
Ground
GND
GND
Q
Ground
Open Drain Output
1) Refer to frontside view: leftmost pin corresponding to pin number 1
Data Sheet
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Package Information
5.3
Packing Information
Figure 9
PG-SSO-4-1 Ammopack
Data Sheet
18
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TLE4959-5U FX FlexibleTransmission Speed Sensor
Revision History
6
Revision History
Revision Date
Changes
1.0
2018-07
First released version of Datasheet
Data Sheet
19
1.0
2018-07
Please read the Important Notice and Warnings at the end of this document
Trademarks of Infineon Technologies AG
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