ST AVS08 User Manual
®
AUTOMATIC VOLTAGE SWITCH (SMPS < 200W)
CONTROLLER
50/60Hz FULL COMPATIBILITY
■
INTEGRATED VOLTAGE REGULATOR
■
TRIGGERING PULSE TRAIN OF THE TRIAC
■
PARASITIC FILTER
■
LOW POWER CONSUMPTION
■
AVS08
A2
TRIAC
HIGHEFFICIENCYANDSAFETYSWITCHING
■
UNINSULATED PACKAGE : AVS08CB
■
INSULATED PACKAGE 2500V(
■
V
DRM
I
T(RMS)
= ± 500 V
:5A
■
■
) : AVS08CBI
RMS
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
, the mode input
SS
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 V
, the mode input
DD
desactivates this option.
■
The TRIAC is specially designed for this
application. An optimization between sensitivity
and dynamic parameters of the triac gate highly
reduces the losses of supply resistor and allows
excellent immunity against disturbances.
A1
AVS1BCP08
DIP-8
AVS08CB
TO-220AB
PIN CONNECTION
V
SS
Osc / In
Osc / Out N.C.
DD
1
2
3
4
8
7
6
5V
V
Mode
V
A2
G
M
G
January 2002 - Ed: 3C
1/7
AVS08
BLOCK DIAGRAM
OSC/IN
OSC/OUT
AVS1BCP08
Supply
PeakVoltage
Detector
Zero Crossing
Oscillator
Reset
Parasitic
Filter
Detector
CP
S
CP
MODE
Mains
mode
Controller
Triggering
Time
Controller
AVS08CB
AVS08CBI
Q
Q
ABSOLUTE MAXIMUM RATINGS
CONTROLLER AVS1BCP08
Symbol Parameter
V
I
V
SS
I/VO
I/IO
Supply voltage -12 0.5 V
I / O voltage VSS-0.5 0.5 V
I / O current -40 +40 mA
Tstg Storage Temperature -60 +150 °C
Toper Operating Temperature code ''C'' 0 +70 °C
Value
Min. Max.
or
A2
A1
Unit
TRIAC AVS08CB / AVS08CBI Tj= +25°C (unless otherwise specified)
Symbol Parameter Value Unit
V
DRM
I
T(RMS)
I
TSM
2
I
dI / dt Critical rate of rise of on-state current (1) Repetitive
T
stg
T
(1) Gate supply : IG= 100mA – di/dt = 1A/µs
= 125°C
(2) T
j
2/7
Repetitive peak off-state voltage (2) ± 500 V
RMS on-state current
AVS08CB TC= 100°C 5 A
(360° conduction angle)
AVS08CBI T
= 95°C
C
Non repetitive surge peak on-state current ( Tjinitial = 25°C ) t = 8.3ms
t = 10ms
tI
2
t value t = 10ms 21 A2s
F = 50Hz
Non
Repetitive
Storage Temperature
Junction Temperature Range
j
- 40 + 125
- 10 + 125
70
65
20 A/µs
100
A
°C
AVS08
THERMAL RESISTANCE
TRIAC AVS08CB / AVS08CBI
Symbol Parameter Value Unit
Rth (j-a) Junction to ambient 60 °C/W
Rth (j-c) DC Junction to case for DC AVS08CB 5.4 °C/W
AVS08CBI 6.3
Rth (j-c) AC Junction to case for 360° conduction angle (F = 50Hz) AVS08CB 4.0 °C/W
AVS08CBI 4.7
DC GENERAL ELECTRICAL CHARACTERISTICS
TRIAC AVS08CB / AVS08CBI
Symbol Parameter
V
*ITM=7A tp= 10ms Tj= 25°C 1.65 V
TM
I
*V
DRM
* For either polarity of electrode A2voltage with reference to electrode A
rated Gate open Tj= 25°C 10 µA
DRM
Fig. 1: Maximum RMS power dissipation versus RMS on-state current (F = 60Hz).
(Curves are cut off by (dI/dt)c limitation)
Value
Unit
Min. Max.
1
3/7
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