Hybrid Electric Vehicle (HEV) Stop/Start System  Favorite

This system shuts the engine off instead of idling while burning fuel and restarts it instantly on demand.

Stop/start systems require power electronics that can handle high current during cranking and ensure reliability during engine cycles operating on/off at high temperatures.

Freescale offers 8- and 16-bit MCUs plus analog switches, system basis chips (SBC) and transceivers for the numerous engine stop and start cycles.

The MM912J637 battery sensor fits with the start/stop system to monitor the current, voltage and temperature to inform the energy management system.

Target Applications

  • Belt Driven Alternator Starter
  • Micro Hybrid
  • Modified Starter
  • Stop Start System

Freescale Hybrid Electric Vehicle Start/Stop System Block Diagram

Recommended Solutions

Products Features
Microcontrollers (MCU)
MPC560xB: Ultra-Reliable 32-bit MCU for Automotive and Industrial Applications Scalable MCU family with Power Architecture
S12XE: High Performance Ultra-Reliable 16-bit MCUs for General Purpose Automotive and Industrial Applications 16-Bit Automotive Microcontroller scalable to 1MB
S12XS: 16-Bit Automotive Microcontroller 16-Bit Automotive Microcontroller
S12P: 16-Bit Microcontroller Low cost 16-Bit Automotive Microcontroller
S12G: Ultra-Reliable Optimized 16-bit MCUs for General Purpose Automotive and Industrial Applications Suited for applications requiring CAN or LIN/SAE J2602
S08SG: 8-bit Small Package SG MCUs Watchdog MCU with LIN slave, high temperature
System Basis Chip (SBC)
MC33661: LIN Enhanced Physical Interface LIN Enhanced Physical Interface
MC33901: High-Speed CAN Transceiver for Automotive Applications High Speed CAN I/F
MM912_637: Battery Sensor with LIN for 12V Lead-acid Batteries Intelligent Integrated Precision Battery Sensor
Pre-driver Module
MC33937: Three Phase Field Effect Transistor Pre-driver Three Phase pre-driver

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