TLE5045iC Technical product description High End GMR Wheel Speed Sensor, 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 TLE5045iC High End GMR Wheel Speed Sensor, ASIL B(D) Intended audience Automotive suppliers interested in wheel speed sensor applications About this product Description Infineon's TLE5045iC is a wheel speed sensor without direction detection designed for sophisticated vehicle control systems. As the successor of the TLE5041plusC the sensor 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 1.0 2018-11-06 TLE5045iC 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 7mA/14mA providing speed information Wide operating junction temperature range -40C to 190C 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 TLE5045iC-R050 Speed only sensor optimized for use with load resistor Rm 50 SP001649080 TLE5045iC-R100 Speed only sensor optimized for use with load resistor 50 Rm 100 SP001216864 Technical Product Description 2 Revision 1.0 2018-11-06 TLE5045iC Technical product description Table of contents Table of contents About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 About this product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1 Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 3 Speed Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Safety Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 ESD and EMC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 ESD HBM Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 7 Product Qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 9 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 10 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Technical Product Description 3 Revision 1.0 2018-11-06 TLE5045iC 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. Unit Note / Test Condition Supply voltage VDD - - 24 V max. 30 min @ TJ = 25 +/- 5C -0.6 - - V TJ < 80C, IDD reverse current limit applies Reverse current IDD -200 - - mA t = max 4 h Junction temperature TJ -40 - 190 C max 4 h, < 16.5 V Magnetic flux density Bmax_x Bmax_y - - 250 mT max. 1min @ TA 85C Bmax_z - - 500 mT max. 1min @ TA 85C 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 TLE5045iC-R100 VDD 4.25 - 20 V TLE5045iC-R050 Operating Temperature TJ -40 190 C Magnetic signal frequency fmag 0.03 - 3000 Hz Minimum differential magnetic dBlimit_x 70 input signal amplitude, TA = 25C magnetic encoder application 90 110 T Magnetic induction amplitude Bx at each GMR sensing element -25 - 25 mT Dynamic and static homogeneous external disturbance fields -2 2 mT Technical Product Description Bext_XYZ 4 99% criterium no unwanted pulses Revision 1.0 2018-11-06 TLE5045iC 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 = 25C. For a more detailed specification please refer to our product datasheets which are available on request. Table 4 Parameter Symbol Min. Typ. Period jitter Sjit - 0.02 Duty cycle DC 40 - Supply current during static output low state Ilow 5.95 Supply current during static output high state Ihigh Current level for indicating errors Max. Unit Note / Test Condition % 1 value 60 % in calibrated mode 7 8.05 mA 11.9 14 16.1 mA IError 1 3.5 3.8 mA Output current slew rate SRr, SRf 11 - 28 mA/ s SRr = (I90% - I10%) / tr SRf = (I90% - I10%) / tf Switch-off voltage Vreset 3.5 V direct on sensor pins Supply voltage hysteresis VHys 1.5 1.7 V TLE5045iC-R100 Supply voltage hysteresis VHys 0.65 0.75 V TLE5045iC-R050 Technical Product Description 5 Revision 1.0 2018-11-06 TLE5045iC 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 TLE5045iC 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 Revision 1.0 2018-11-06 TLE5045iC Technical product description 3 Speed Protocol 3 Speed Protocol The first output pulse is generated when the input field exceeds the minimal magnetic threshold 2 x dBlimit. After minimum and maximum are detected and offset is compensated, output switching occurs at zerocrossing of the differential magnetic signal. Bright_x t Bleft_x t Bx Adaptive Hysteresis = t IHigh ILow Figure 3 Signal output pulse 4 Safety Mechanisms The TLE5045iC 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. 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. 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. TLE5045iC 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. 5 ESD and EMC Characteristics The TLE5045iC 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. Technical Product Description 7 Revision 1.0 2018-11-06 TLE5045iC Technical product description 6 ESD HBM Model 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. 6 ESD HBM Model Table 5 Parameter Symbol Min. Typ. Max. Unit Note / Test Condition ESD Voltage VHBM - - 12 kV Method AEC-Q100 Rev H (1.5 k, 100 pF) 7 Product Qualification Product qualification according to AEC-Q100 Grade 0 is performed. 8 Pin Configuration Table 6 Pin No. Symbol Function 1 VDD Supply voltage 2 GND Ground Figure 4 Pin configuration Technical Product Description 8 Revision 1.0 2018-11-06 TLE5045iC Technical product description 9 Package Outline 9 Package Outline Figure 5 Package Outline Technical Product Description 9 Revision 1.0 2018-11-06 TLE5045iC Technical product description 10 Terminology 10 Terminology Table 7 s microsecond T micro-Tesla A Ampere AEC Automotive Electronics Council AK Arbeitskreis ASIC application specific integrated circuit ASIL automotive safety integrity Level C Celsius CISP Comite international special des perturbations radioelectriques EMC electromagnetic compatibility ESD electrostatic discharge GMR giant magneto resistance GND ground h hour HBM human body model Hz Hertz IC integrated circuit iGMR integrated giant magneto resistance ISO International Organization for Standardization iTPMS integrated tire pressure monitoring system k kilo-Ohm kV kilo-Volt mA milli-Ampere min minute mm millimeter ms millisecond mT milli-Tesla Ohm pF picofarad PWM pulse width modulation V Volt VDD supply voltage Technical Product Description 10 Revision 1.0 2018-11-06 TLE5045iC Technical product description Revision history Revision history Document version Date of release Description of changes 1.0 2018-11-06 * Technical Product Description Initial version 11 Revision 1.0 2018-11-06 Trademarks All referenced product or service names and trademarks are the property of their respective owners. Edition 2018-11-06 Published by Infineon Technologies AG 81726 Munich, Germany (c) 2018 Infineon Technologies AG All Rights Reserved. Do you have a question about any aspect of this document? Email: erratum@infineon.com Document reference IFX-srj1538755497187 IMPORTANT NOTICE 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. 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