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A4931 Datasheet 3-Phase Brushless DC Motor Pre-Driver

Manufacturer: Allegro MicroSystems

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General Description

TheA4931 is a complete 3-phase brushless DC motor pre-driver.

The device is capable of driving a wide range of N-channel power MOSFETs and can support motor supply voltages up to 30 V.

Commutation logic is determined by three Hall-element inputs spaced at 120°.

Overview

A4931 3-Phase Brushless DC Motor Pre-Driver.

Key Features

  • Drives 6 N-channel MOSFETs.
  • Synchronous rectification for low power dissipation.
  • Internal UVLO and thermal shutdown circuitry.
  • Hall element inputs.
  • PWM current limiting.
  • Dead time protection.
  • FG outputs.
  • Standby mode.
  • Lock detect protection.
  • Overvoltage protection.

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