A5944
A5944 is Three-Phase Sensorless Fan Driver manufactured by Allegro MicroSystems.
Three-Phase Sensorless Fan Driver
Features
AND BENEFITS
- Sinusoidal drive for low audible noise
- Quiet startup adjustment feature
- High efficiency control algorithm
- Sensorless operation
- PWM speed input
- FG speed output
- Lock detection
- Short-circuit protection
- Standby mode
PACKAGE:
10-contact 3 mm × 3 mm DFN package with exposed thermal pad (suffix EJ)
DESCRIPTION
The A5944 three-phase motor drivers incorporate sinusoidal drive to minimize audible noise and vibration for medium power fans.
A sinusoidal voltage profile is applied to the windings of the motor at startup to quietly start and gradually ramp up the motor to desired speed. The voltage profile is selectable...
