KA44143A Overview
⚫ KA44143A 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 power consumption. The application circuit is an example.
KA44143A 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