REFMOT101 Reference Design

ROHM Semiconductor

REFMOT101 - 12V power supply, 3 hall sensor support, Three-phase brushless motor drive with Microcontroller system

Description

This design consists of a three-hole sensor three-phase brushless DC motor pre-driver and a MOSFET.
It is an evaluation board that can drive a brushless DC motor with a supply voltage of 12V (typ) and a motor current of 6A (max) by adding a speed control circuit using a microcontroller to the 3 Hall sensor 3-phase brushless DC motor drive circuit.
It requires only one external power supply. When a Hall IC is used, the logic IC can detect the direction of rotation and output a triple multiplier FG.

Features
  • 3 Hall Sensor Three Phase Brushless DC Motor Pre-Driver and Output MOS P+N Configuration
  • Supply voltage 12V(typ)
  • Output current 6A(max)
  • PWM drive with 120 degree commutation
  • Rotation direction switching, short braking function
  • Rotation direction detection output, triple FG output possible (when Hall IC is used)
  • Speed control by MCU is possible.
Applications
  • Small Mobility Unit
  • Fans
  • Pumps
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