ACS102-5Tx

3/8

The ACS102 device is well adapted to washing machines, dish washers, tumble driers, refrigerators, water

heaters, and cookware. It has been designed especially to switch on & off low power loads such as sole-

noids, valves, relays, dispensers, micro-motors, pumps, fans, door locks, and low power lamps bulbs.

Pin COM

: Common drive reference, to connect to the power line neutral

Pin G

: Switch Gate input to connect to the digital controller through a resistor

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. No protection

device are required between the gate and COM terminals.

The SO-8 version allows to connect several ACS102 devices on the same cooling PCB pad which is the

COM pin.

In appliance systems, the ACS102 switch intends to drive low power loads in full cycle ON / OFF mode.

The turn off commutation characteristics of these loads are described in Table 1.

Thanks to its thermal and turn-off commutation characteristics, the ACS102 switch drives a load, such as

door lock, lamp, relay, valve and micro motor, up to 0.2A without any turn-off aid circuit. Switching off the

ACS within one full AC line cycle will extend its current up to 0.3 A.

AC LINE SWITCH BASIC APPLICATION

LOAD

Load IRMS

current

(A)

POWER

FACTOR

(dI/dt)c

(A/ms)

(dV/dt)c

(V/

µs)

TURN-OFF

DELAY

(ms)

Door lock, lamp

< 0.2

1

< 0.1

< 0.15

< 10

Relay Valve

Dispenser

Micro-motor

< 0.2

> 0.7

< 0.1

< 5

< 10

Pump Fan

< 0.3

> 0.2

< 0.15

< 10

< 20

Table 1: Low power load turn off commutation requirement (230V AC applications).

AC

MAINS

L

N

ST 72 MCU

LOAD

-Vcc

L

R

G

COM

OUT

ACS102

ON

S

D

TYPICAL APPLICATION DIAGRAM