AUTOMATIC VOLTAGE SWITCH (SMPS < 200W)
CONTROLLER
50/60Hz FULL COMPATIBILITY
INTEGRATED VOLTAGE REGULATOR
TRIGGERING PULSE TRAIN OF THE TRIAC
PARASITIC FILTER
LOW POWER CONSUMPTION
TRIAC
HIGH EFFICIENCY AND SAFETY SWITCHING
UNINSULATED PACKAGE : AVS08CB
INSULATED PACKAGE 2500V(
RMS
):
AVS08CBI
V
DRM
= ± 500 V
I
T(RMS)
:5A
DESCRIPTION
The AVS08 kit is an automatic mains selector
(110/220V AC) to be used in SMPS < 200 W. It is
composed of 2 devices :
• The Controller is optimized for low consumption
and high security triggering of the triac. When
connected to V
SS
, the mode input activates an
additional option. If the main power drops from
220V to 110V, the triac control remains locked to
the 220V mode and avoids any high voltage spike
when the voltage is restored to 220V.
When connected to VDD, the mode input desacti-
vates this option.
• The TRIAC is specially designed for this applica-
tion. An optimization between sensitivity and dy-
namic parameters of the triac gate highly reduces
the losses of supply resistor and allows excellent
immunity against disturbances.
P
DIP8
(Plastic)
B
TO220AB
(Plastic)
A1
A2
G
AVS08
March1995
PIN CONNECTION
1/7