®
AVS08
AUTOMATIC VOLTAGE SWITCH (SMPS < 200W)
CONTROLLER
50/60Hz FULL COMPATIBILITY
INTEGRATED VOLTAGE REGULATOR
TRIGGERING PULSE TRAIN OF THE TRIAC
PARASITIC FILTER
LOW POWER CONSUMPTION
s
s
s
s
s
A2
TRIAC
HIGH EFFICIENCY AND SAFETY SWITCHING
UNINSULATED PACKAGE : AVS08CB
INSULATED PACKAGE 2500V(
RMS
) : AVS08CBI
V
DRM
= ± 500 V
I
T(RMS)
: 5A
s
s
s
s
s
A1
G
A2
AVS1BCP08
DIP-8
AVS08CB
TO-220AB
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 V
DD
, the mode input
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.
s
s
PIN CONNECTION
V
SS
Osc / In
Osc / Out
V
DD
1
2
3
4
8
7
6
5
V
M
Mode
N.C.
V
G
January 2002 - Ed: 3C
1/7
AVS08
BLOCK DIAGRAM
AVS1BCP08
MODE
AVS08CB
or
AVS08CBI
A2
Peak Voltage
Detector
Supply
Reset
Mains
mode
Controller
Parasitic
Filter
CP
Q
Zero Crossing
Detector
S
CP
Triggering
Q
Time
Controller
OSC/IN
Oscillator
A1
OSC/OUT
ABSOLUTE MAXIMUM RATINGS
CONTROLLER AVS1BCP08
Symbol
V
SS
V
I
/ V
O
I
I
/ I
O
Tstg
Toper
Supply voltage
I / O voltage
I / O current
Storage Temperature
Operating Temperature code ''C''
Parameter
Value
Min.
-12
V
SS
-0.5
-40
-60
0
Max.
0.5
0.5
+40
+150
+70
Unit
V
V
mA
°C
°C
TRIAC AVS08CB / AVS08CBI T
j
= +25°C (unless otherwise specified)
Symbol
V
DRM
I
T(RMS)
Parameter
Repetitive peak off-state voltage (2)
RMS on-state current
(360° conduction angle)
AVS08CB
AVS08CBI
I
TSM
I
2
t
dI / dt
Non repetitive surge peak on-state current ( T
j
initial = 25°C )
I
2
t value
Critical rate of rise of on-state current (1)
T
C
= 100°C
T
C
= 95°C
t = 8.3ms
t = 10ms
t = 10ms
Repetitive
F = 50Hz
Non
Repetitive
T
stg
T
j
Storage Temperature
Junction Temperature Range
70
65
21
20
100
- 40 + 125
- 10 + 125
°C
A
A
2
s
A/µs
Value
± 500
5
Unit
V
A
(1) Gate supply : IG = 100mA – di/dt = 1A/µs
(2) T
j
= 125°C
2/7
AVS08
THERMAL RESISTANCE
TRIAC AVS08CB / AVS08CBI
Symbol
Rth (j-a)
Rth (j-c) DC
Rth (j-c) AC
Junction to ambient
Junction to case for DC
Junction to case for 360° conduction angle (F = 50Hz)
AVS08CB
AVS08CBI
AVS08CB
AVS08CBI
Parameter
Value
60
5.4
6.3
4.0
4.7
°C/W
Unit
°C/W
°C/W
DC GENERAL ELECTRICAL CHARACTERISTICS
TRIAC AVS08CB / AVS08CBI
Value
Symbol
V
TM
*
I
DRM
*
I
TM
= 7A
V
DRM
rated
t
p
= 10ms
Gate open
Parameter
Min.
T
j
= 25°C
T
j
= 25°C
Max.
1.65
10
V
µA
Unit
* For either polarity of electrode A2 voltage with reference to electrode A1
Fig. 1:
Maximum RMS power dissipation versus RMS on-state current (F = 60Hz).
(Curves are cut off by (dI/dt)c limitation)
3/7
AVS08
DC GENERAL ELECTRICAL CHARACTERISTICS
(continued)
CONTROLLER AVS1BCP08 Toper = 25°C (unless otherwise specified)
Value
Symbol
V
SS
(pin 1) (Vreg)
I
SS
(pin 1) (Vreg)
(@ V
SS
= 9V)
I
SS
(pin 1)
(@ triac gate non
connected)
F (pin 3)
(@ R = 91kΩ)
(C = 100pF)
V
M
(pin 8)
V
M
(pin 8)
(1) V
M
(pin 8)
V
M
(pin 8)
(2)
(2)
Vth (3)
Vh (3)
Vth (3)
Vh (3)
Shunt regulator
Supply current
Quiescent current
Parameter
Min.
-10
0.4
Typ.
-9
Max.
-8
25
1
V
mA
mA
Unit
Oscillator frequency
42
44
46
KHz
Peak voltage of detection high-threshold
Peak voltage of detection hysteresis
Zero-crossing detection high-threshold
Zero-crossing detection hysteresis
Power-on-reset activation threshold
Power-down-reset activation threshold
V
IL
V
IH
(4)
(4)
4.08
0.370
95
27
4.25
0.4
110
50
Vreg x 0.89
4.42
0.420
125
80
V
V
mV
mV
V
Vrazht (4)
Vrazlt (4)
Mode (pin 7)
V
G
(pin 5)
3
0.7 Vreg
6.95
0.3 Vreg
1
+ 50
V
V
V
µA
V
OL
(I
VG
= 25mA)
Leakage current (V
G
= V
DD
)
NOTE:
(1) : This value gives a typical noise immunity on the zero-crossing detectionof 110mV x 1018/18 = 6.20V on the main supply
(2) : See following diagram
(3) : Voltage referred to V
SS
(4) : Voltage referred to VDD
POWER-ON AND POWER-OFF RESET BEHAVIOUR
Undetermined Power-on reset
Normal operation
Power-off reset Undetermined
0V
0V
-2.7V
Vrazlt
Vrazht
Vreg = VSS - VDD
-2.7V
4/7
AVS08
TYPICAL APPLICATION
110 V
or
220V
NTC
NTC
AVS08CB
or AVS08CBI
A
2
G
A
1
1N
4007
2
x
9.1KΩ
1W
R1
1MΩ
1%
option V
DD
V
M
8
7
5
AVS1BCP08
V
SS
390Ω
V
G
R2
18KΩ
1%
3
2
91k
Ω
1 %
100pF 5 %
AVS08
1
4V
DD
V
SS
33µF
16V
ORDERING INFORMATION
AVS08
CONTROLLER
TRIAC
AVS 1B C P08
AVS 08 C B
I
AUTOMATIC
VOLTAGE
SWITCH
IDENTIFICATION
PACKAGE:
DIP-8
AUTOMATIC
VOLTAGE
SWITCH
IDENTIFICATION
INSULATED Suffix
PACKAGE B:
TO-220AB
OPERATING
TEMPERATURE
C = 0/70°C
OPERATING
TEMPERATURE
C = 0/70°C
5/7
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