Page 1
®
AUTOMATIC VOLTAGE SWITCH (SMPS < 500W)
CONTROLLER
50/60Hz FULL COMPATIBILITY
■
INTEGRATED VOLTAGE REGULATOR
■
TRIGGERING PULSE TRAIN OF THE TRIAC
■
PARASITIC FILTER
■
LOW POWER CONSUMPTION
■
AVS12
A2
TRIAC
HIGHEFFICIENCYANDSAFETYSWITCHING
■
UNINSULATED PACKAGE : AVS12CB
■
V
DRM
I
T(RMS)
= ± 600 V
: 12A
■
■
DESCRIPTION
The AVS12 kit is an automatic mains selector
(110/220V AC) to be used in SMPS < 500 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
AVS1ACP08
DIP-8
AVS12CB
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
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Page 2
AVS12
BLOCK DIAGRAM
OSC/IN
OSC/OUT
AVS1ACP08
PeakVoltage
Detector
Zero Crossing
Oscillator
Supply
Detector
Reset
Parasitic
Filter
CP
S
CP
MODE
Mains
mode
Controller
Triggering
Time
Controller
AVS12CB
Q
Q
ABSOLUTE MAXIMUM RATINGS
CONTROLLER AVS1ACP08
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.
A2
A1
Unit
TRIAC AVS12CB 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
dV/dt * Linear slope up to 0.67 V
T
stg
T
(1) Gate supply : IG= 100mA – di/dt= 1A/µs *For either polarity of electrode A2 voltage with reference to electrode A1
(2) T
= 110°C
j
2/7
Repetitive peak off-state voltage (2) ± 600 V
RMS on-state current (360° conduction angle) TC= 70°C 12 A
Non repetitive surge peak on-state current ( Tjinitial = 25°C ) t = 8.3ms
t = 10ms
tI
2
t value t = 10ms 50 A2s
F = 50Hz
Non
Repetitive
Gate open Tj = 110°C 50 V/µs
- 40 + 150
0 + 125
Storage Temperature
Junction Temperature Range
j
DRM
105
100
20 A/µs
100
A
°C
Page 3
AVS12
THERMAL RESISTANCE
TRIAC AVS12CB
Symbol Parameter Value Unit
Rth (j-a) Junction to ambient 60 °C/W
Rth (j-c) DC Junction to case for DC 3 °C/W
Rth (j-c) AC Junction to case for 360° conduction angle (F = 50Hz) 2.3 °C/W
DC GENERAL ELECTRICAL CHARACTERISTICS
TRIAC AVS12CB
Symbol Parameter
V
GD
V
TM
I
DRM
* For either polarity of electrode A2voltage with reference to electrode A
VD=V
RL = 3.3kΩ Pulse duration > 20µs Tj= 110°C 0.2 V
DRM
*ITM= 17A tp= 10ms Tj= 25°C 1.75 V
*V
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.
T
= 110°C 500
j
1
Fig. 2: Correlation between maximum mean
power dissipation and maximum allowable temperature (Tamb and Tcase) for different thermal
resistances heatsink + contact.
3/7
Page 4
AVS12
Fig. 3: Non repetitive surge peak on-state cur-
rent for a sinusoidal pulse with width: t≤10ms,
and corresponding value of I
2
t.
Fig. 4: On-state characteristics (maximum values).
DC GENERAL ELECTRICAL CHARACTERISTICS (continued)
CONTROLLER AVS1ACP08 Toper = 25°C (unless otherwise specified)
Symbol Parameter
Min. Typ. Max.
Value
Unit
(pin 1) (Vreg) Shunt regulator -10 -9 -8 V
V
SS
ISS(pin 1) (Vreg)
SS
= 9V)
(@ V
ISS(pin 1)
Supply current 0.4 30 mA
Quiescent current 0.7 mA
(@ triac gate non
connected)
F (pin 3)
Oscillator frequency 42 44 46 KHz
(@ R = 91kΩ)
(C = 100pF)
(pin 8) Vth (3) Peakvoltage of detection high-threshold 4.08 4.25 4.42 V
V
M
(pin 8) Vh (3) Peak voltage of detection hysteresis 0.370 0.4 0.420 V
V
M
(1) VM(pin 8) Vth (3) Zero-crossing detection high-threshold 95 110 125 mV
VM(pin 8) Vh (3) Zero-crossing detection hysteresis 27 50 80 mV
(2) Vrazht (4) Power-on-reset activation threshold Vreg x 0.89 V
(2) Vrazlt (4) Power-down-reset activation threshold 3 6.5 V
Mode (pin 7) V
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
(4) : Voltage referred to V
SS
DD
(4)
IL
V
(4)
IH
0.7 Vreg
0.3 Vreg V
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Page 5
POWER-ON AND POWER-OFF RESET BEHAVIOUR
AVS12
Undetermined Power-on reset
0V
-2.7V
Vrazht
TYPICAL APPLICATION
110 V
or
220V
Normal operation
Vreg = VSS -VDD
Power-off reset
-2.7V
Vrazlt
NTC
Undetermined
0V
1 N
4007
2
x
9.1KΩ
1W
R1
1MΩ
1 %
R2
18KΩ
1 %
V
M
91k 1 %Ω
8
AVS1ACP08
3
100pF 5 %
AVS12
V
SS
V
V
5
V
4
V
option
7
21
DD
SS
390Ω
G
DD
AVS12CB
A
1
G
33µF
16V
A
2
NTC
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Page 6
AVS12
ORDERING INFORMATION
AVS12
CONTROLLER TRIAC
AVS 1A C P08 AVS 12 C B
AUTOMATIC
VOLTAGE
PACKAGE:
DIP-8
SWITCH
IDENTIFICATION
OPERATING
TEMPERATURE
C = 0/70°C
PACKAGE MECHANICAL DATA
DIP-8 Plastic (controller)
I
a1
L
B
b
Z
e3
D
8
B1
e
5
AUTOMATIC
VOLTAGE
SWITCH
PACKAGE B:
IDENTIFICATION
TO-220AB
OPERATING
TEMPERATURE
C = 0/70°C
DIMENSIONS
REF.
b1
a1 0.70 0.027
B 1.39 1.65 0.055 0.065
F
B1 0.91 1.04 0.036 0.041
b 0.5 0.020
E
b1 0.38 0.50 0.015 0.020
D 9.80 0.385
E 8.8 0.346
Millimetres Inches
Min. Typ. Max. Min. Typ. Max.
6/7
1
4
e3 7.62 0.300
F 7.1 0.280
I 4.8 0.189
L 3.3 0.130
Z 0.44 1.60 0.017 0.063
e 2.54 0.100
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PACKAGE MECHANICAL DATA
TO-220AB (Plastic) (Triac)
B
L
I
A
l4
a1
l3
l2
a2
b1
e
AVS12
DIMENSIONS
REF.
C
b2
A 15.20 15.90 0.598 0.625
a1 3.75 0.147
F
a2 13.00 14.00 0.511 0.551
B 10.00 10.40 0.393 0.409
b1 0.61 0.88 0.024 0.034
b2 1.23 1.32 0.048 0.051
C 4.40 4.60 0.173 0.181
c1 0.49 0.70 0.019 0.027
c2
c2 2.40 2.72 0.094 0.107
e 2.40 2.70 0.094 0.106
F 6.20 6.60 0.244 0.259
I 3.75 3.85 0.147 0.151
I4 15.80 16.40 16.80 0.622 0.646 0.661
M
c1
L 2.65 2.95 0.104 0.116
l2 1.14 1.70 0.044 0.066
l3 1.14 1.70 0.044 0.066
M 2.60 0.102
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
■
Cooling method: C
■
Recommended torque value: 0.8 m.N
■
Maximum torque value: 1 m.N
OTHER INFORMATION
Part Number Marking Weight Base Qty Packing mode
AVS12CB AVS12CB 2.3 g 1000 Tube
AVS1ACP08 AVS1ACP08 0.6 g 2000 Tube
Informationfurnished is believed to be accurate and reliable.However, STMicroelectronics assumes no responsibility for the consequencesof
useof such information nor for anyinfringement of patents or other rights ofthird parties which may result fromitsuse. No license is granted by
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all information previously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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© 2002 STMicroelectronics - Printed in Italy - All rights reserved.
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