ACS120-7SB/SFP/ST

4/11

The ACS120 device is well adapted to Washing machine, dishwasher, tumble drier, refrigerator,

air-conditioning systems, and cookware. It has been designed especially to switch on & off low power loads

such as solenoid, valve, relay, dispenser, micro-motor, pump, fan and defrost heaters.

Pin COM: Common drive reference to connect to the power line neutral

Pin G: Switch Gate input to connect to the digital controller

Pin OUT: Switch Output to connect to the load

This ACS™ switch is triggered with a negative gate current flowing out of the gate pin G. It can be driven di-

rectly by the digital controller through a resistor as shown on the typical application diagram.

Thanks to its thermal and turn off commutation performances, the ACS120 switch is able to drive with no

turn off additional snubber an inductive load up to 2 A.

AC LINE SWITCH BASIC APPLICATION

OUT

ACS120

COM

G

S

D

ON

ST72 MCU

N

AC

MAINS

L

R

- Vcc

L

M

LOAD

TYPICAL APPLICATION DIAGRAM

ACS™ switch turns off. Because of the inductance L of the load, the current flows then through the ava-

lanche diode D and decreases linearly to zero. During this time, the voltage across the switch is limited to

to 10 H); it can reach about 10 mJ and is dissipated in the clamping diode section. The ACS switch sustains

the turn off energy because its clamping section is designed for that purpose.

HIGH INDUCTIVE SWITCH-OFF OPERATION