Electronic power steering (EPS), steer-by-wire (SbW

Overview

Steering is one of the most safety critical systems in a vehicle and it is evolving fast. From fail-operational EPS to fully redundant steer-by-wire and compact rear-wheel steering, each architecture demands high availability, functional safety and precise motor control. Infineon provides a complete semiconductor portfolio covering key ECU sockets including safety microcontrollers, power management, gate drivers, MOSFETs and sensors.

Benefits

Single-source: EPS, SbW & RWS
Flexible design across EPS variants
Field-proven OEM interoperability
ISO 26262&functional safety ready
Compact integration, lower BOM
Fast design-in with eval boards
Chassis & motor control expertise

Block diagram

About

Real time control and safety supervision for steering ECUs

Infineon's safety microcontrollers enable real-time motor control and functional safety for electric power steering (EPS), steer-by-wire (SbW) and rear-wheel steering (RWS).

Core control for motor torque and diagnostics
Lockstep cores support ASIL-D concepts
ECC on buses and memories
Independent SMU manages fault reactions
Encapsulation supports QM and ASIL coexistence

Robust power delivery, monitoring and protected actuation

Infineon provides PMIC, gate driver, and MOSFET solutions for the electric power steering (EPS), steer-by-wire (SbW) and rear-wheel steering (RWS) power stages, which are designed for efficient motor actuation and safety monitoring.

PMIC supplies MCU rails and supervises power
Watchdog, voltage monitoring and safe state outputs
Bridge driver with built in safety mechanisms
MOSFET portfolio for efficient, compact inverters
Reverse polarity protection and main switch options

Redundant sensing options for accurate steering control

Infineon's sensing solutions support precise control and redundancy concepts required for angle, torque and rotor position feedback for electric power steering (EPS), steer-by-wire (SbW) and rear-wheel steering (RWS).

Steering sensors with AMR, GMR and TMR options
Dual die sensor packages for space saving redundancy
Stray field robust angle sensing options available
Redundant torque sensing with linear Hall options
Diversity options with magnetic and inductive sensing

Scalable building blocks across voltage domains

Infineon supports electric power steering (EPS), steer-by-wire (SbW) and rear-wheel steering (RWS) designs across 12 V and 48 V platforms with scalable semiconductors and packaging options for compact inverters.

MOSFET voltage classes for 12 V and 48 V designs
Packaging options for small inverter footprints
Topside cooled MOSFETs support high power density
Portfolio reuse across platforms and segments
Supports standard and higher power architectures

Fail-operational motor control platform for safe and reliable systems

The Infineon SMAK demonstrator helps teams evaluate motor control building blocks and accelerate prototyping.

Motor control kit for fast evaluation and design-in
Dual independent three phase inverter topology
Hardware diversity across key sockets
Hardware ready for field-oriented control
Supports steering and braking applications and more

01 Safety microcontroller

Real time control and safety supervision for steering ECUs

Infineon's safety microcontrollers enable real-time motor control and functional safety for electric power steering (EPS), steer-by-wire (SbW) and rear-wheel steering (RWS).