S12ZVM 3-Phase Electrical Water Pump (EWP) Reference Design

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Block Diagram

3-Phase Water Pump

S12ZVM-EWP-PMSM-BD Block Diagram

Supported Devices

Processors and Microcontrollers

S12 MagniV Mixed-Signal MCUs



  • PMSM sensorless FOC algorithm supported
  • Software for over current, stall detection, under voltage, over voltage, over temperature protection
  • Speed control using PWM duty cycle and FreeMASTER
  • Fault clear and restart auto-mode if related macro enabled


  • PWM and LIN function integrated in one wire
  • BDM and SCI integrated in one plug: Four layers PCB with one layer components mounted


  • 12 V system application, supply voltage range from 9 V to 18 V
  • 7 A input current, up to 80 W input power
  • Dual shunt current sampling
  • Hardware overvoltage, undervoltage, overcurrent, and short protection


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Design Files

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2 design files


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4 software files

Note: For better experience, software downloads are recommended on desktop.


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