AN44143A Description
AN44143A is a driver IC for 3-phase brushless motor optimized for fan motors. By employing the rotor position detector and sine wave PWM drive by 1-Hall-sensor, this IC achieves ponent reduction and miniaturization of motor set as well as motor drive at low noise, low vibration and low powe.
AN44143A Key Features
- Supply voltage range: 4.5 V ~ 26.4 V
- Built-in 5-V regulator
- 3-phase full-wave sine-wave PWM drive by 1-Hall-sensor
- Selectable Input Mode: Either linear voltage input or PWM input through VSP pin
- Selectable the start frequency through SWSF pin
- Conduction angle auto driver phase shift correction
- Rotation direction selectable (Forward/Reverse)
- FG pulse divide selectable
- Sleep mode
- Various protection functions