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A89332-3 Datasheet Three-Phase Sensorless Fan Controller

Manufacturer: Allegro MicroSystems

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General Description

The A89332-3 three-phase motor controller incorporates a sensorless sinusoidal drive to minimize vibration for highpower, high-speed server fans.

Sensorless control eliminates the requirement for Hall sensors for server fan applications.

A flexible, closed-loop speed control system is integrated into the IC.

Overview

A89332-3 Three-Phase Sensorless Fan Controller.

Key Features

  • Closed-loop speed control.
  • Power loss brake.
  • AC Loss IBB control.
  • Fault mode brake.
  • Configurable rotor detect (RD) or frequency generator (FG) output.
  • Speed curve configuration via EEPROM.
  • I2C serial port.
  • Sinusoidal modulation for reduced audible noise and low vibration.
  • Sensorless (no Hall sensors required).
  • Trapezoidal drive option for high speed.
  • Adjustable gate drive option.
  • Minimal.

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