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BLDC Motor Driver

MS39531

  • Recommend for new design
Three-Phase Sensorless Motor Driver
MS39531
Overview

MS39531 is a sine-driven three-phase sensorless DC motor driver, featuring minimal vibration and high efficiency. The driver integrates built-in basic closed-loop speed control, allowing custom motor speed profiles for specific applications, and can operate without a microcontroller.

Additionally, the MS39531 provides comprehensive protection functions, including:Lock detection with auto-restart、Undervoltage lockout (UVLO)、Overcurrent protection (OCP)、Thermal shutdown (TSD)

Key Features
  • ?Closed-loop speed control
  • ?Speed profile configurable via EEPROM
  • ?I2C serial interface
  • ?Sine-wave modulation (low noise & vibration)
  • ?Sensorless operation (Hall sensor not required)
  • ?Low RDS(ON) power MOSFETs – 3A high-current output
  • ?Minimal external components
  • ?PWM speed control input
  • ?FG (Frequency Generator) speed output
  • ?RD (Rotor Detection) lock output
  • ?Lock detection
  • ?Soft-start
  • ?Standby mode
  • ?Short-circuit/overload protection