TLE5046IC-PWM2E-R100 [INFINEON]
High End GMR Wheel Speed Sensor with direction detection, ASIL B(D);
| 型号： | TLE5046IC-PWM2E-R100 |
| 厂家： | 
Infineon |
| 描述： | High End GMR Wheel Speed Sensor with direction detection, ASIL B(D) |
| 文件： | 总14页 (文件大小：536K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLE5046iC
Technical product description
High End GMR Wheel Speed Sensor with direction detection, ASIL B(D)
About this document
Scope and purpose
High-level description of the product features and technical characteristics as primary information about the
functionality of the TLE5046iC High End GMR Wheel Speed Sensor with direction detection, ASIL B(D)
Intended audience
Automotive suppliers interested in wheel speed sensor applications
About this product
Description
Infineon's TLE5046iC is a wheel speed sensor with direction detection designed for sophisticated vehicle control
systems. TLE5046iC shows best-in-class jitter performance, thus being the best choice for wheel speed
applications. The rotational speed is sensed with high accuracy, enabling the sensor to be used as a component
of indirect tire pressure monitoring systems (iTPMS). It is based on integrated giant magneto resistance (iGMR).
Excellent sensitivity to magnetic field is specified over a wide temperature range. To meet harsh automotive
requirements, robustness to electrostatic discharge (ESD) and electromagnetic compatibility (EMC) was
maximized without the need of additional external components.
Figure 1
Product photo
Technical Product Description
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
Revision 2.0
2020-06-30
TLE5046iC
Technical product description
About this product
Features & Benefits
•
•
•
•
Developed according to ISO 26262, compliant with the requirements of ASIL B(D)
Low jitter 0.02% due to high switching accuracy enables iTPMS
Two-wire current interface providing speed and direction information
Advanced stop-start capabilities enabled by
-
-
Innovative watchdog concept to guarantee maximum signal availability
No loss of direction information during start-stop condition
•
•
•
Wide operating junction temperature range -40°C to 190°C
Robustness against external magnetic disturbances up to 2mT through differential sensing principle
High sensitivity enables outstanding air gap performance along with immunity against y-displacement
effects
•
Small sensor package 5x3mm without need of external capacitor saves module size, increases robustness
against mechanical stress, and enables design freedom
•
•
Advanced EMC concept maximizes the availability of the sensor signal
New established Micro Break feature designed to be immune against disturbances on supply line
Order Information
Table 1
Type
Description
Ordering
Number
TLE5046iC-PWM2-R050
TLE5046iC-PWM2-R100
TLE5046iC-PWM2E-R050
Speed sensor with direction detection and PWM protocol,
optimized for use with load resistor Rm ≤ 50 Ω
SP002627824
SP002627830
SP002627816
Speed sensor with direction detection and PWM protocol,
optimized for use with load resistor 50 Ω ≤ Rm ≤ 100 Ω
Speed sensor with direction detection, additional self-
diagnostics, and PWM protocol, optimized for use with load
resistor Rm ≤ 50 Ω
TLE5046iC-PWM2E-R100
Speed sensor with direction detection, additional self-
diagnostics, and PWM protocol, optimized for use with load
resistor 50 Ω ≤ Rm ≤ 100 Ω
SP002627820
TLE5046iC-AK-LR
TLE5046iC-AK-ERR
Speed sensor with direction detection and AK protocol
SP001418756
SP001615796
Speed sensor with direction detection, additional self-
diagnostics, and AK protocol
Technical Product Description
2
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TLE5046iC
Technical product description
Table of contents
Table of contents
About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About this product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
PWM Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AK Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Safety Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ESD and EMC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ESD HBM Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Product Qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1
2
3
4
5
6
7
8
9
10
11
Technical Product Description
3
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Technical product description
1 Product Characteristics
1
Product Characteristics
Absolute Maximum Ratings
Stresses above the maximum values listed here may cause permanent damage to the device.
Table 2
Parameter
Symbol Min.
Typ.
Max.
24
Unit Note / Test Condition
Supply voltage
VDD
-
-
-
V
V
max. 30 min @ TJ = 25 +/- 5°C
-0.6
-
TJ < 80°C, IDD reverse current limit
applies
Reverse current
IDD
TJ
-200
-40
-
-
-
-
-
mA t = max 4 h
Junction temperature
Magnetic flux density
190
250
°C
max 4 h, < 16.5 V
Bmax_x
Bmax_y
mT max. 1min @ TA ≤ 85°C
Bmax_z
-
-
500
mT max. 1min @ TA ≤ 85°C
Operating Range
The following operating conditions must not be exceeded in order to ensure correct operation.
Table 3
Parameter
Symbol Min.
Typ.
Max.
Unit Note / Test Condition
Supply voltage
VDD
5.2
-
20
V
TLE5046iC-AK*, TLE5046iC-PWM*-
R100
VDD
TJ
4.25
-40
0
-
20
V
TLE5046iC-PWM*-R050
Operating Temperature
190
3000
110
°C
Hz
µT
Magnetic signal frequency
fmag
-
Minimum differential magnetic dBlimit_x 70
90
99% criterium
input signal amplitude,
magnetic encoder application
TA = 25°C
Magnetic induction amplitude Bx
at each GMR
sensing element
-25
-2
-
25
2
mT
Dynamic and static
homogeneous external
disturbance fields
Bext_XYZ
mT no unwanted pulses
Technical Product Description
4
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TLE5046iC
Technical product description
1 Product Characteristics
Functional Parameters
The magnetic input is assumed sinusoidal with constant amplitude and offset. The typical values shown below
are valid for VDD = 12 V and TA = 25°C. For a more detailed specification please refer to our product datasheets
which are available on request.
Table 4
Parameter
Period jitter
Duty cycle
Symbol Min.
Typ.
Max.
Unit Note / Test Condition
Sjit
DC
Ilow
-
±0.02
%
± 1 σ value
40
5.95
-
60
%
in calibrated mode
Supply current during static
output low state
7
8.05
mA
Supply current during static
output mid state (AK), or high
state (PWM)
Imid
Ihigh
11.9
14
16.1
mA
Supply current during static
output high state (AK)
Ihigh
23.8
1
28
3.5
-
32.2
3.8
28
mA
mA
Current level for indicating
errors
IError
Output current slew rate
SRr, SRf 11
mA/ SRr = (I90% - I10%) / tr
μs
SRf = (I90% - I10%) / tf
Switch-off voltage
Vreset
3.5
1.7
V
V
direct on sensor pins
Supply voltage hysteresis
VHys
VHys
1.5
TLE5046iC-AK*, TLE5046iC-PWM*-
R100
Supply voltage hysteresis
0.65
0.75
V
TLE5046iC-PWM*-R050
Technical Product Description
5
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TLE5046iC
Technical product description
2 Functional Description
2
Functional Description
The sensor element has a magnetic interface to detect the increments of a magnetized encoder: the sensing
principle is based on the giant magneto resistance (GMR) principle sensitive to magnetic fields in x-direction. It
is designed for maximum sensitivity and suppression of homogeneous fields.
In the figure below the typical placement of the TLE5046iC facing a magnetic encoder wheel is shown. The
figure also indicates the coordinate system, which is valid throughout this document.
Figure 2
Typical placement of the TLE5046iC
Technical Product Description
6
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TLE5046iC
Technical product description
3 PWM Protocol
3
PWM Protocol
The output has been designed as a two-wire current interface based on a Pulse Width Modulation principle.
Each zero crossing of the magnetic input signal triggers an output pulse indicated by IHigh and ILow current
consumption.
The PWM Protocol is available in two different protocol options: standard TLE5046iC-PWM2 and TLE5046iC-
PWM2E with indication of internal errors by using the warning pulse.
The timing characteristic for TLE5046iC-PWM2 and TLE5046iC-PWM2E is given in the table below:
Figure 3
Signal output pulse
The timing characteristic for TLE5046iC-PWM2 and TLE5046iC-PWM2E is given in the table below:
Table 5
Parameter
Symbol Min.
Typ.
45
Max.
52
Unit Note / Test Condition
Pre-low length
tpre-low
tWarning
tDR-L
38
µs
µs
µs
µs
µs
µs
Hz
Length of Warning pulse
Length of DR-L pulse
Length of DR-R pulse
Length of DR-L & EL pulse
Length of DR-R & EL pulse
38
45
52
76
90
104
207
414
828
-
tDR-R
153
306
180
360
720
117
tDR-L&EL
tDR-R&EL 616
Output of EL pulse,
maximum frequency
fELmax
-
Length of stand still pulse
Stand still period
ΔBEL
tStop
1.232 1.4
1.656 ms
TStop
590
737
345
160
848
ms
ΔBEL
mT 4*ΔBlimit
mT 2*ΔBlimit
ΔBWarning
ΔBWarning
Technical Product Description
7
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TLE5046iC
Technical product description
4 AK Protocol
4
AK Protocol
TLE5046iC-AK-LR and TLE5046iC-AK-ERR devices are compliant with: “Requirement Specifications for
Standardized Interface for Wheel Speed Sensors with Additional Information ‘AK-Protocol’ Version: 4.0” dated
13.02.2008 of Daimler AG, unless otherwise stated in this document or in the valid Technical Datasheets.
The following illustration defines the meaning of the data protocol. The bits 0 - 8 in the illustration are
designated as the data protocol and their purpose is to transfer additional information to the speed pulse.
Bit position #0 can be used as an indication for air gap reserve (LR), or can be interpreted by the ECU as an
“error bit” and treated in a special way (ERR). The two different variants TLE5046iC-AK-LR and TLE5046iC-AK-
ERR, respectively, perform accordingly.
Figure 4
Data protocol
5
Safety Mechanisms
The TLE5046iC offers safety features to support the Automotive Safety Integrity Level ASIL B and is designed to
be used in ASIL D systems.
An embedded safety concept was developed to notify the Control System in case of an internal error by setting
the output current level to a constant failure indication level IError
.
An embedded safety concept was developed to minimize the effect of hard and soꢀ random errors by the
introduction of specific safety mechanisms. In case of an internal error a notification to the ECU is transmitted
by either setting the output current level to a constant failure indication level IError or transmitting an error flag
via the protocol.
Following safety mechanisms have been implemented:
•
Undervoltage detection: This safety mechanism detects voltage drops to values where the correct
functionality of the circuitry is no more ensured. The sensor remains in this state until the error condition is
solved and VDD is back into normal operating range.
•
Detection of discrepancy between number of active fuses and internally stored number of fuses: This safety
mechanism compares the active fuse bits against the internal stored quantity. The sensor remains in this
failure indication state IError until the device is powered off and on again and the error condition is not
present any longer.
•
•
Detection of clock malfunction: This safety mechanism forces the failure indication state if the clock is
either stuck or below 25% of the nominal value
Detection of different numbers between speed and direction path: This safety mechanism verifies if more
than two consecutive electric events are generated without any detected event in the direction path or vice
versa
•
Detection of critical air gap, ADC clipping and temperature monitoring: This safety mechanisms verifies
critical states inside the ASIC itself.
Technical Product Description
8
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TLE5046iC
Technical product description
6 ESD and EMC Characteristics
The full overview including detailed descriptions of the functionality of each safety mechanism and the detailed
failure reaction can be found in the Safety Manual.
The entirety of Infineon experience has been used to identify and prevent common cause of failure in the
application including EMC disturbances and mechanical tolerances. An advanced EMC concept, inclusive of
microbreak feature, without the need of external components, maximizes the availability of the sensor signal at
the electrical interface. Also, the speed algorithm is designed for fast start-up and optimization of duty cycle.
The extremely low jitter of the sensor contributes to high time accuracy of the speed signal.
TLE5046iC is accompanied by accurate safety analysis and complete documentation to enable the system
integrator to quickly evaluate the compatibility with the system/item and start the integration process. A
detailed description of how the sensor is to be used in an ISO26262 compliant system can be found in the Safety
Manual and Safety Analysis Summary Report, which are available on request.
6
ESD and EMC Characteristics
The TLE5046iC is characterized according to the IC level EMC requirements described in the “Generic IC EMC
Test Specification” Version 2.0 from 2014. EMC testreport is available on request.
Additionally component level EMC characterizations are performed according to ISO 7637-2:2011, ISO
7637-3:2007 and ISO 16750-2:2010 regarding pulse immunity, and CISPR 25 (2009-01) Ed. 3.0 regarding
conducted emissions.
7
ESD HBM Model
Table 6
Parameter
Symbol Min.
Typ.
Max.
Unit
Note / Test Condition
ESD Voltage
VHBM
-
-
±12
kV
Method AEC-Q100 Rev H (1.5 kΩ,
100 pF)
8
Product Qualification
Product qualification according to AEC-Q100 Grade 0 is performed.
Technical Product Description
9
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TLE5046iC
Technical product description
9 Pin Configuration
9
Pin Configuration
Table 7
Pin No.
Symbol
VDD
Function
1
2
Supply voltage
Ground
GND
Figure 5
Pin configuration
Technical Product Description
10
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TLE5046iC
Technical product description
10 Package Outline
10
Package Outline
Figure 6
Package Outline
Technical Product Description
11
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TLE5046iC
Technical product description
11 Terminology
11
Terminology
Table 8
µs
microsecond
µT
micro-Tesla
A
Ampere
AEC
AK
Automotive Electronics Council
Arbeitskreis
ASIC
ASIL
C
application specific integrated circuit
automotive safety integrity Level
Celsius
CISP
EMC
ESD
GMR
GND
h
Comité international spécial des perturbations radioélectriques
electromagnetic compatibility
electrostatic discharge
giant magneto resistance
ground
hour
HBM
Hz
human body model
Hertz
IC
integrated circuit
iGMR
ISO
iTPMS
kΩ
integrated giant magneto resistance
International Organization for Standardization
integrated tire pressure monitoring system
kilo-Ohm
kV
kilo-Volt
mA
min
mm
ms
milli-Ampere
minute
millimeter
millisecond
milli-Tesla
Ohm
mT
Ω
pF
picofarad
PWM
V
pulse width modulation
Volt
VDD
supply voltage
Technical Product Description
12
Revision 2.0
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TLE5046iC
Technical product description
Revision history
Revision history
Document
version
Date of
release
Description of changes
1.0
2.0
2018-11-06
2020-06-30
•
•
Initial version
PWM protocol changed to PWM2
Technical Product Description
13
Revision 2.0
2020-06-30
Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2020-06-30
Published by
IMPORTANT NOTICE
WARNINGS
The information given in this document shall in no
event be regarded as a guarantee of conditions or
characteristics (“Beschaffenheitsgarantie”) .
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.
Due to technical requirements products may contain
dangerous substances. For information on the types
in question please contact your nearest Infineon
Technologies office.
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.
Infineon Technologies AG
81726 Munich, Germany
©
2020 Infineon Technologies AG
All Rights Reserved.
Do you have a question about any
aspect of this document?
Email: erratum@infineon.com
Document reference
IFX-lbs1538409505925
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.
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