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A3985 - Digitally Programmable Dual Full-Bridge MOSFET Driver

Datasheet Summary

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.

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.

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Datasheet preview – A3985

Datasheet Details

Part number A3985
Manufacturer Allegro MicroSystems
File Size 772.75 KB
Description Digitally Programmable Dual Full-Bridge MOSFET Driver
Datasheet download datasheet A3985 Datasheet
Additional preview pages of the A3985 datasheet.

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Full PDF Text Transcription

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A3985 Digitally Programmable Dual Full-Bridge MOSFET Driver FEATURES AND BENEFITS ▪ 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 PACKAGE: 38-pin TSSOP (suffix LD) Not to scale 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.
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