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24V/35W 3-Phase PMSM Sensorless FOC Drive with HRPWM (2”x4” Form Factor)

Description

Design variant of 24V/35W 3-Phase PMSM Fan Controller (Prototype), with the following changes:

  • Application MCU changed to ST STM32L011F4
  • Smart Gate Driver changed from “H” to “S” version to allow easier parameter change via SPI to suit different motor types
  • Improved mains zero-crossing detector
  • On-board BLE module removed
  • PCB size changed to 2”x4” form factor to allow mechanical assembly with off-the-shelve PSU module
  • Steel spacers at four corners for making contact with PSU module to complete earth connection required by some PSU modules for line filtering need
  • 99% SMT parts

Block Diagram


🔴TI TMS320F28027F 32-bit 60MHz MCU with InstaSPIN-FOC
🟠TI DRV8323S 65V 3-phase Smart Gate Driver with Current Shunt Amplifiers
🟡3x TI CSD88537ND 60V N-ch Power MOSFET
🟢ST STM32L011F4 32MHz Ultra-low-power ARM Cortex-M0+ MCU
🔵4x Wurth 9774040960 Steel Spacers

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