ML4435 Overview
Description
The ML4435 provides all the circuitry for sensorless speed control of 3 phase Brushless DC Motors. Controller functions include start-up circuitry, Back EMF commutation control, Pulse Width Modulation (PWM) speed control, pulse-by-pulse current limiting, motor coasting, and undervoltage protection.
Key Features
- Proprietary back-EMF sensing commutation technique for motor communication without hall effect sensors
- PWM pulse-by-pulse current limiting to protect motor and FET drivers
- Stand-alone operation; motor starts and stops with power applied to the IC*
- Soft-start function limits start-up current
- PWM speed control for efficiency and minimum FET sizing
- Onboard under voltage lock out and power fail detect
- Tach output senses commutation of the motor
