A89332-1 Datasheet (Allegro) - Three-Phase Sensorless Fan Controller

A89332-1, Three-Phase Sensorless Fan Controller

The A89332-1 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 int

A89332-1 Features

* Closed-loop speed control

* Fault mode brake

* AC Loss IBB control

* Configurable rotor detect (RD) or frequency generator (FG) output

* Speed curve configuration via EEPROM

* I2C serial port

* Sinusoidal modulation for reduced audible noise