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A3931 - Automotive 3-Phase BLDC Controller and MOSFET Driver

Download the A3931 datasheet PDF. This datasheet also covers the A3930 variant, as both devices belong to the same automotive 3-phase bldc controller and mosfet driver family and are provided as variant models within a single manufacturer datasheet.

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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (A3930_AllegroMicroSystems.pdf) that lists specifications for multiple related part numbers.

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

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Other Datasheets by Allegro MicroSystems

Part Number Description
A3930 Automotive 3-Phase BLDC Controller and MOSFET Driver
A3932 Three-Phase Power MOSFET Controller
A3933 THREE-PHASE POWER MOSFET CONTROLLER
A3938 Three-Phase Power MOSFET Controller
A3904 Low Voltage Voice Coil Motor Driver

Full PDF Text Transcription

Click to expand full text
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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