GENERAL DESCRIPTION

The ML4423 provides the PWM sinewave drive signals necessary for controlling three phase AC induction motors as well as single and two phase split capacitor AC induction motors.

FEATURES

■ Drives single, two, and three phase AC motors

■ Greater than 10:1 variable speed control range

■ Constant V/F ratio with programmable end points

■ Reverse capability for two and three phase motors

■ Low distortion PWM sinewave drive

■ Eliminates run capacitors in PSC motors

■ Coast function for quick power disable

■ Low cost interface for various gate drivers

■ PWM current limit, undervoltage lockout, and programmable deadtime

■ 12V –20 operation with onboard 8V reference