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A3938 Datasheet Three-Phase Power MOSFET Controller

Manufacturer: Allegro MicroSystems

Overview: A3938 Three-Phase Power MOSFET Controller.

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General Description

The A3938 is a three-phase, brushless DC motor controller.

It has a high-current gate drive capability that allows driving of a wide range of power MOSFETs and can support motor supply voltages to 50 V.

The A3938 integrates a bootstrapped high-side driver to minimize the external component count required to drive N-channel MOSFET drivers.

Key Features

  • Drives a wide range of N-channel MOSFETs.
  • Low-side synchronous rectification.
  • Power MOSFET protection.
  • Adjustable dead time for cross-conduction protection.
  • Selectable coast or dynamic brake on power-down or RESET input.
  • Fast/slow current decay modes.
  • Internal PWM current control.
  • Motor lead short-to-ground protection.
  • Internal 5 V regulator.
  • Fault diagnostic output.
  • Thermal shutdown.
  • Undervoltage protection Package 38-pin TSSOP (suffi.

More Datasheets from Allegro MicroSystems

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