GENERAL DESCRIPTION

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.

features

■ Stand-alone operation with forward and reverse

■ On-board start sequence: Sense Position → Drive → Accelerate → 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 currents

■ PWM control for maximum efficiency or linear control for minimum noise

■ 12V operation provides direct FET drive for 12V motors

■ Drives high voltage motors with high side FET drivers

■ Guaranteed no shoot-through when driving external FET gates directly