A89331 Description
The A89331 three-phase motor driver incorporates sensorless sinusoidal drive to minimize vibration for 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.
A89331 Key Features
- Closed-loop speed control
- Overvoltage protection
- Power loss brake
- Fault mode brake
- Configurable RD or FG output
- 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