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A3935 - 3-Phase Power MOSFET Controller

General Description

TheA3935 is designed specifically for automotive applications that require high-power motors.

Each provides six high-current gate drive outputs capable of driving a wide range of N-channel power MOSFETs.

A requirement of automotive systems is steady operation over a varying battery input range.

Key Features

  • Drives wide range of N-channel MOSFETs in 3-phase bridges.
  • PFM boost converter for use with low-voltage battery supplies.
  • Internal LDO regulator for gate-driver supply.
  • Bootstrap circuits for high-side gate drivers.
  • Current monitor output.
  • Adjustable battery overvoltage detection.
  • Diagnostic outputs.
  • Motor lead short-to-battery, short-to-ground, and bridge- open protection.
  • Undervoltage protection.
  • 40°C to 150°C TJ operation.
  • Therm.

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Other Datasheets by Allegro MicroSystems

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A3901 Dual Full Bridge Low Voltage Motor Driver
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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A3935 3-Phase Power MOSFET Controller for Automotive Applications Features and Benefits ▪ Drives wide range of N-channel MOSFETs in 3-phase bridges ▪ PFM boost converter for use with low-voltage battery supplies ▪ Internal LDO regulator for gate-driver supply ▪ Bootstrap circuits for high-side gate drivers ▪ Current monitor output ▪ Adjustable battery overvoltage detection ▪ Diagnostic outputs ▪ Motor lead short-to-battery, short-to-ground, and bridge- open protection ▪ Undervoltage protection ▪ –40°C to 150°C TJ operation ▪ Thermal shutdown Package 36-pin QSOP (LQ): Approximate scale 1:1 Description TheA3935 is designed specifically for automotive applications that require high-power motors.