A89332-1 Overview
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 into the IC.
A89332-1 Key Features
- Closed-loop speed control
- Fault mode brake
- AC Loss IBB control
- Configurable rotor detect (RD) or frequency generator
- Speed curve configuration via EEPROM
- I2C serial port
- Sinusoidal modulation for reduced audible noise and low
- Sensorless (no Hall sensors required)
- Trapezoidal drive option for high speed
- Adjustable gate drive option