ML4428 Datasheet - Micro Linear

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

ML4428_MicroLinearCorporation.pdf