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Electric Power Steering (EPS)  Favorite




Electric Power Steering (EPS) is favored over hydraulic power steering in most new vehicles. EPS offers:

  • Reduced weight and improved fuel economy
  • Greater handling and steering feel
  • Improved vehicle safety

The central electronic elements of today's electric power steering systems are modern 16- and 32-bit MCUs designed for safety-critical applications.

Freescale's 16-bit and MPC5xxx 32-bit single and dual-core MCU provide enhanced computing power and specialized peripherals for complex electric motor control functions.

Target Applications

  • Electric Power Steering (EPS)
  • Electric Power Assisted Steering (EPAS)
Freescale Electric Power Steering (EPS) block diagram

Recommended Solutions


Products Features
Microcontrollers (MCU)
MPC574xP: Ultra-Reliable Dual-Core 32-bit MCU for Automotive and Industrial Applications Main 32-bit MCU for data processing, dual-core
MPC560xP: Ultra-Reliable 32-bit MCU for Automotive and Industrial Safety Applications Main 32-bit MCU for data processing, single core
MPC564xL: Ultra-Reliable Dual-Core 32-bit MCU for Automotive and Industrial Applications Main 32-bit MCU for data processing, dual-core
S12G: Ultra-Reliable Optimized 16-bit MCUs for General Purpose Automotive and Industrial Applications Main 16-bit MCU for data processing, single-core
Watchdog Microcontrollers (MCU)
S12XS: 16-Bit Automotive Microcontroller Safety companion MCU, 16-bit MCU for redundancy and watchdog function
S12P: 16-Bit Microcontroller Safety companion MCU, 16-bit MCU for redundancy and watchdog function
S08SG: 8-bit Small Package SG MCUs Watchdog MCU, up to 32KB Flash
S08SL: 8-bit EEPROM with LIN S08EL and S08SL MCUs Watchdog MCU, up to 16KB Flash
Power Supply, SBC and Physical Interface
MC33907: Safe System Basis Chip DC/DC up to 800 mA on Vcore Safe System Basis Chip with Buck and Boost DC/DC up to 800mA
MC33908: Safe SBC with Buck and Boost DC/DC up to 1.5 A on Vcore Safe System Basis Chip with Buck and Boost DC/DC up to 1.5A
MC33742: SBC with Enhanced High-Speed CAN Transceiver System Basis Chip with CAN I/F
MC33903: System Basis Chip Gen2 with High-speed CAN and LIN System Basis Chip Gen2 with HS CAN and LIN I/F
MC33904: System Basis Chip Gen2 with High Speed CAN System Basis Chip Gen2 with HS CAN I/F
MC33905: System Basis Chip Gen2 with High-speed CAN and LIN System Basis Chip with CAN and LIN I/F
MOSFET Pre-Driver
GD3000: 3-Phase Brushless Motor Pre-Driver Three-Phase MOSFET Pre-Driver, 6V-58V, -40 to +125
MC33937: Three Phase Field Effect Transistor Pre-driver 3-Phase MOSFET Pre-Driver IC
Signal Conditioning
MC33972: MSDI with Suppressed Wakeup Multiple Switch Detection IC
MC33975: MSDI with 32 mA Suppressed Wakeup Signal Conditioning and Switch Monitoring
Advantages
  • Freescale 32-bit MCU families specifically designed for advanced motor control allow for fast and precise acquisition of state variables and for real-time control code processing
  • Set of powerful motor control peripherals for use in advanced motor control applications
  • Cross-triggering unit allows automatic generation of ADC conversion requests during PWM period without CPU load and dynamic configuration optimization via DMA
  • The Freescale dual-core MPC564xL supports reduced system complexity while providing key safety measures for enhanced safety
  • The Freescale dual-core MPC574xP and MPC564xL microcontrollers support reduced system complexity while providing key safety measures for enhanced safety
  • The MC33906, MC33907 and MC33908 are pin-to-pin compatible SBCs offering power scalable DC/DC and LDO regulators combined with low power modes
  • The Freescale MPC574xP, MPC564xL and MPC560xP microcontrollers are SafeAssure functional safety solutions
  • The MC33906, MC33907 and MC33908 feature an integrated safety architecture with voltage monitoring and fail safe state machine and are SafeAssure functional safety solutions
  • Freescale product longevity program offers up to 15-year availability for selected product

Functional Safety

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