ACST8-8CT View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ACST8-8CT Datasheet PDF : 10 Pages
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ACST8
Table 6: Electrical Characteristics per Switch
For either positive or negative polary of pin OUT voltage respect to pin COM voltage
Symbol
Test conditions
Values
VDRM/
VRRM
IGT
VGT
VGD
IH
IL
VTM
VT0
Rd
IDRM /
IRRM
dV/dt
(dI/dt)c
VCL
Repetitive peak off-state voltage
VOUT = 12V (DC) RL = 33Ω
VOUT = 12V (DC) RL = 33Ω
VOUT = VDRM RL = 3.3kΩ
IOUT = 100mA Gate open
IG = 20mA
IOUT = 11A
tp = 380µs
VOUT = VDRM
VOUT = VRRM
VOUT = 550V gate open
Without snubber
ICL = 1mA
tp = 1ms
MAX.
Tj = 25°C
Tj = 25°C
Tj = 125°C
Tj = 25°C
Tj = 25°C
Tj = 25°C
Tj = 125°C
Tj = 125°C
Tj = 25°C
Tj = 125°C
Tj = 125°C
Tj = 125°C
Tj = 25°C
MAX.
MAX.
MIN.
MAX.
MAX.
MAX.
MAX.
MAX.
MAX.
MAX.
MIN.
MIN.
TYP.
800
30
1.5
0.2
40
70
1.5
0.95
50
10
1
750
4.5
1200
Unit
V
mA
V
V
mA
mA
V
V
mΩ
µA
mA
V/µs
A/ms
V
1. AC LINE SWITCH BASIC APPLICATION
The ACST8-8C device is especially designed to drive medium power induction motors in washing ma-
chines, refrigerators, dish washers, and tumble dryers.
Pin COM
Pin G
Pin OUT
: Common drive reference, to be connected to the power line neutral
: Switch Gate input to be connected to the controller
: Switch Output to be connected to the load
When driven from a low voltage controller, the ACST switch is triggered with a negative gate current flow-
ing out of the gate pin G. It can be driven by the controller through a resistor as shown on the typical appli-
cation diagram. In appliance systems, the ACST8-8C switch intends to drive medium power load in ON /
OFF full cycle or phase angle control mode.
Thanks to its thermal and turn-off commutation characteristics, the ACST8-8C switch is able to drive an
inductive load up to 8A without a turn-off aid snubber circuit.
In washing machine or drier appliances, the tumble rotates in both directions. When using bidirectional
phase shift induction motor, two switches are connected on each side of the phase shift capacitor: in
steady-state operation, one switch only conducts energising the coils and defining the tumble direction.
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