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A3931 - Automotive 3-Phase BLDC Controller and MOSFET Driver

This page provides the datasheet information for the A3931, a member of the A3930 Automotive 3-Phase BLDC Controller and MOSFET Driver family.

Datasheet Summary

Description

The A3930 and A3931 are three-phase brushless DC (BLDC) motor controllers for use with N-channel external power MOSFETs.

They incorporate much of the circuitry required to design a cost-effective three-phase motor drive system and have been specifically designed for automotive applications.

Features

  • High current three-phase gate drive for N-channel MOSFETs.
  • Synchronous rectification.
  • Cross-conduction protection.
  • Charge pump and top-off charge pump for 100% PWM.
  • Integrated commutation decoder logic.
  • Operation over 5.5 to 50 V supply voltage range.
  • Extensive diagnostics output.
  • Provides +5 V Hall sensor power.
  • Low-current sleep mode.

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Datasheet preview – A3931

Datasheet Details

Part number A3931
Manufacturer Allegro MicroSystems
File Size 948.21 KB
Description Automotive 3-Phase BLDC Controller and MOSFET Driver
Datasheet download datasheet A3931 Datasheet
Additional preview pages of the A3931 datasheet.

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Full PDF Text Transcription

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A3930 and A3931 Automotive 3-Phase BLDC Controller and MOSFET Driver FEATURES AND BENEFITS ▪ High current three-phase gate drive for N-channel MOSFETs ▪ Synchronous rectification ▪ Cross-conduction protection ▪ Charge pump and top-off charge pump for 100% PWM ▪ Integrated commutation decoder logic ▪ Operation over 5.5 to 50 V supply voltage range ▪ Extensive diagnostics output ▪ Provides +5 V Hall sensor power ▪ Low-current sleep mode PACKAGE: 48-Lead LQFP with exposed thermal pad (suffix JP) Not to scale DESCRIPTION The A3930 and A3931 are three-phase brushless DC (BLDC) motor controllers for use with N-channel external power MOSFETs.
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