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A89332 - Three-Phase Sensorless Fan Controller

Datasheet Summary

Description

The A89332 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.

Features

  • Closed-loop speed control.
  • Power loss brake.
  • 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 external components.

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Datasheet preview – A89332

Datasheet Details

Part number A89332
Manufacturer Allegro
File Size 362.23 KB
Description Three-Phase Sensorless Fan Controller
Datasheet download datasheet A89332 Datasheet
Additional preview pages of the A89332 datasheet.

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Full PDF Text Transcription

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A89332 Three-Phase Sensorless Fan Controller FEATURES AND BENEFITS • Closed-loop speed control • Power loss brake • 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 external components • PWM duty cycle speed input • FG speed output • Lock detection • Soft start • Shorted output protection (overcurrent protection, OCP) APPLICATIONS • High-speed 12 V server cooling fans • Industrial and consumer blowers and fans DESCRIPTION The A89332 three-phase motor controller incorporates a sensorless sinusoidal drive to m
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