Electric power steering (EPS)

Products and reference designs

Electric power steering (EPS)

Block diagram

Overview

Our integrated circuits and reference designs will help you build a reliable, high-performance, safe electric power steering (EPS) system based on advanced power management, sensors, control and gate drivers.

Design requirements

  • Following state-of-the-art architecture regarding system redundancy in order to allow implementation of the system on the highest safety level.
  • Providing a steering wheel position sensing in ignition-off state with minimal quiescent current.
  • Optimizing size while maintaining the required safety and performance.

Block diagram

Find products and reference designs for your system.

Electric power steering (EPS)

M M Stator-Channel A Stator-Channel A Stator-Channel B Stator-Channel B Safety switch Safety switch Switch driver Switch driver Wired interface Wired interface CAN CAN PMIC PMIC WDT WDT DC/DC DC/DC Super-visor Super-visor LDOs LDOs Sensor DC/DC SensorDC/DC SPI SPI Digital processing Digital processing PWM PWM ADC ADC GPIOs GPIOs CAN CAN SPI SPI MCU core MCU core To power stages To power stages Self-diagnostics/monitoring Self-diagnostics/monitoring Temperature sensor Temperature sensor Reverse battery protection Reverse battery protection Ideal diode controller Ideal diode controller Alternatively to MCU Alternatively to MCU I/V Sense I/V Sense Analog front end Analog front end Analog front end Analog front end Current and voltage sense Current and voltage sense AMP AMP VREF VREF ADC ADC Safety logic Safety logic Comparator Comparator Phase separation relay Phase separation relay Driver Driver Power stage Power stage 3-phase bridge driver 3-phase bridge driver 3-phase bridge 3-phase bridge Sensing Sensing Rotor position sensor Rotor position sensor Steering wheel angle sensor Steering wheel angle sensor Torque sensor Torque sensor

Technical documentation

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Type Title Date
White paper Bridging 12 V and 48 V in dual-battery automotive systems 21 Nov 2018
* Data sheet TPS65381-Q1 Multirail Power Supply for Microcontrollers in Safety-Relevant Applications datasheet (Rev. G) PDF | HTML 07 Dec 2023
White paper Driving the green revolution in transportation 03 Oct 2016

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