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A3985 Datasheet Digitally Programmable Dual Full-Bridge MOSFET Driver

Manufacturer: Allegro MicroSystems

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General Description

The A3985 is a flexible dual full-bridge gate driver suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors or 2-phase brushless dc motors.

It can also be used to drive two individual torque motors or solenoid actuators.

Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V.

Overview

A3985 Digitally Programmable Dual Full-Bridge MOSFET Driver.

Key Features

  • Serial interface for full digital control.
  • Dual full-bridge gate drive for N-channel MOSFETs.
  • Dual 6-bit DAC current reference.
  • Operation over 12 to 50 V supply voltage range.
  • Synchronous rectification.
  • Cross-conduction protection.
  • Adjustable mixed decay.
  • Fixed off-time PWM current control.
  • Low-current idle mode.

More Datasheets from Allegro MicroSystems

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