ML4428 Datasheet (Micro Linear) - Sensorless Smart-Start BLDC PWM Motor Controller

ML4428, Sensorless Smart-Start BLDC PWM Motor Controller

The ML4428 motor controller provides all of the functions necessary for starting and controlling the speed of delta or wye-wound Brushless DC (BLDC) Motors without the need for Hall Effect sensors.

Back-EMF voltage is sensed from the motor windings to determine the proper commutation phase sequence

ML4428 Features

* s s Stand-alone operation with forward and reverse On-board start sequence: Sense Position Æ Drive Æ Accelerate Æ Set Speed No backward movement at start-up Patented back-EMF commutation technique Simple variable speed control with on-board reference Single external resistor sets all critical curre