ACST8 STMicroelectronics, ACST8 Datasheet - Page 6

• Manufacturer Part Number: ACST8
• Description: Overvoltage protected AC switch
• Manufacturer: STMicroelectronics

Specifications of ACST8

• High Noise Immunity: static dV/dt > 2000 V/μs
• To-220fpab Insulated Package: 1500 V rms

Application information
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Application information
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
AC Mains
Vcc
MCU
induction
ACST
motor
Doc ID 7463 Rev 9
AC
Rg
C
L
AC Motor
ACST
Phase shift capacitor +
protective air inductance
Rg
Selection of the
rotor direction
ACST8