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A4960 Datasheet Sensorless BLDC Controller

Manufacturer: Allegro MicroSystems

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General Description

The A4960 is a three-phase, sensorless, brushless DC (BLDC) motor controller for use with external N-channel power MOSFETs.

The motor is driven using block commutation (trapezoidal drive) where phase commutation is determined, without the need for independent position sensors, by monitoring the motor back-EMF.

A programmable motor start-up scheme allows the A4960 to be adjusted for a wide range of motor and load combinations.

Overview

A4960 Sensorless BLDC Controller.

Key Features

  • 3-phase BLDC sensorless start-up and commutation.
  • Gate drive for N-channel MOSFETs.
  • Integrated PWM current limit.
  • 7 to 50 V supply voltage operating range.
  • Compatible with 3.3 V and 5 V logic.
  • Cross-conduction protection with adjustable dead time.
  • Charge pump for low supply voltage operation.
  • Extensive diagnostics output.
  • Low current sleep mode.

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