Application information

ACST8

6/13

Doc ID 7463 Rev 7

2

Application information

2.1

Typical application description

The ACST8 device has been designed to control medium power load, such as AC motors in

home appliances. Thanks to its thermal and turn off commutation performances, the ACST8

switch is able to drive an inductive load up to 8 A with no turn off additional snubber. It also

provides high thermal performances in static and transient modes such as high torque

operating conditions or inrush current of an AC motor.

Figure 16.

AC induction motor control – typical diagram

Selection of the

rotor direction

AC

induction

motor

Phase shift capacitor +

protective air inductance

ACST

MCU

AC Motor

Rg

C

AC Mains

Vcc

Rg

ACST

L