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Electronic Power Steering

The central electronic elements of today’s power steering systems are modern 16- and 32-bit MCUs designed for safety-critical applications. These controllers can provide enhanced computing power and specialized peripherals for complex electric motor control functions.

Integrated power supply solutions are also important elements of a power steering control unit. They provide connectivity to automotive busses, such as CAN and LIN. For MOSFET power stages control, integrated pre-drivers are typically used to interface with the MCU directly or via SPI.

APLELECPWRSTEERING_DV_TH

Recommended Devices

Freescale Products Application Use
16-Bit Microcontrollers  
S12P: 16-Bit Microcontroller Main controller for sensor data processing
S12XS: 16-Bit Automotive Microcontroller Main controller for sensor data processing
32-Bit Microcontrollers & Processors  
MPC560xP: 32-bit Power Architecture® Microcontrollers Main controller for sensor data processing
MPC564xL: 32-bit Power Architecture® Microcontrollers for Chassis and Safety Applications Main controller for sensor data processing
8-Bit Microcontrollers  
S08SG: 8-bit Microcontrollers Safety companion controller for redundancy and watchdog functions
S08SL: 8-bit Microcontrollers Safety companion controller for redundancy and watchdog functions
Network Transceivers  
MC33742: System Basis Chip (SBC) with Enhanced High-Speed CAN Transceiver System Basis Chips (SBC)
MC33902: High Speed CAN Interface with Embedded 5 V Supply CAN/LIN, networking
Power Actuation  
MC33937: Three Phase Field Effect Transistor Pre-driver 3 Phase Pre-Drivers
MC33972: Multiple Switch Detect Interface w/Suppressed Wake-up Signal Conditioning
MC33975: Multiple Switch Detection Interface with 32mA Suppressed Wakeup Signal Conditioning
MC33981: High-Frequency/Current, High-Side Switch (4.0 mOhm up to 60 kHz) Fail-Safe Switch
MC33982: Single Intelligent High-current Self-protected Silicon High Side Switch (2.0 mΩ) Fail-Safe Switch
Solution Advantages
32-bit Differentiation
  • Scalable platform of Power Architecture® e200 based devices supporting memory sizes of 80kByte–1.5MByte
  • Comprehensive portfolio of devices supporting FlexRay


16-bit Differentiation
  • Freescale’s 16-bit family is a benchmark in the automotive industry
  • Field-proven efficiency in code, processing and power consumption
  • XGATE, 100 MHz coprocessor to offload main CPU on S12XE
  • Huge range of sizes: 64K–1 MB flash


Sensor Differentiators
  • Inertial X-axis sensor available in 1.5g, 7g, 10g or 15g
  • Proven Poly Si micro-electromechanical systems (MEMS) technology in robust SOIC16 package

Customer Notice

Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010: MPC564xL product in 257 MAPBGA.

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Featured Product

  • MPC564xL Family

    MPC564xL FamilyDual core with lockstep and dual parallel operation modes for critical safety applications