AVS12
®
AUTOMATIC VOLTAGE SWITCH (SMPS < 500W)
CONTROLLER
50/60Hz FULL COMPATIBILITY
INTEGRATED VOLTAGE REGULATOR
TRIGGERING PULSE TRAIN OF THE TRIAC
PARASITIC FILTER
LOW POWER CONSUMPTION
■
■
■
■
A2
■
TRIAC
HIGH EFFICIENCY AND SAFETY SWITCHING
UNINSULATED PACKAGE : AVS12CB
VDRM = ± 600 V
IT(RMS) : 12A
A1
■
G
A2
■
■
■
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 VSS, 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
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.
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January 2002 - Ed: 3C
AVS1ACP08
DIP-8
AVS12CB
TO-220AB
PIN CONNECTION
VSS
1
8
VM
Osc / In
2
7
Mode
Osc / Out
3
6
N.C.
VDD
4
5
VG
1/7
AVS12
BLOCK DIAGRAM
AVS1ACP08
MODE
AVS12CB
Supply
Reset
A2
Peak Voltage
Detector
Parasitic
Filter
Mains
mode
Controller
CP
Zero Crossing
Detector
Q
S
CP
OSC/IN
Triggering Q
Time
Controller
A1
Oscillator
OSC/OUT
ABSOLUTE MAXIMUM RATINGS
CONTROLLER AVS1ACP08
Symbol
VSS
Parameter
Min.
Max.
Unit
-12
0.5
V
VI / VO
I / O voltage
VSS -0.5
0.5
V
I I / IO
I / O current
-40
+40
mA
Tstg
Storage Temperature
-60
+150
°C
0
+70
°C
Toper
Supply voltage
Value
Operating Temperature code ''C''
TRIAC AVS12CB Tj = +25°C (unless otherwise specified)
Symbol
Parameter
Value
Unit
± 600
V
VDRM
Repetitive peak off-state voltage (2)
IT(RMS)
RMS on-state current (360° conduction angle)
TC = 70°C
12
A
Non repetitive surge peak on-state current ( Tj initial = 25°C )
t = 8.3ms
t = 10ms
105
100
A
I2t value
t = 10ms
50
A2s
Repetitive
F = 50Hz
20
A/µs
Non
Repetitive
100
Tj = 110°C
50
V/µs
- 40 + 150
0 + 125
°C
ITSM
I2t
dI / dt
Critical rate of rise of on-state current (1)
dV/dt *
Linear slope up to 0.67 VDRM
Tstg
Tj
Storage Temperature
Junction Temperature Range
(1) Gate supply : IG = 100mA – di/dt = 1A/µs
(2) Tj = 110°C
2/7
Gate open
* For either polarity of electrode A2 voltage with reference to electrode A1
AVS12
THERMAL RESISTANCE
TRIAC AVS12CB
Symbol
Parameter
Value
Unit
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
Rth (j-a)
DC GENERAL ELECTRICAL CHARACTERISTICS
TRIAC AVS12CB
Value
Symbol
Parameter
Unit
Min.
VGD
Max.
VD = VDRM RL = 3.3kΩ Pulse duration > 20µs
Tj = 110°C
VTM *
ITM = 17A
Tj = 25°C
1.75
V
IDRM *
VDRM rated
Tj = 25°C
10
µA
Tj = 110°C
500
tp = 10ms
Gate open
0.2
V
* 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)
Fig. 2: Correlation between maximum mean
power dissipation and maximum allowable temperature (Tamb and Tcase) for different thermal
resistances heatsink + contact.
3/7
AVS12
Fig. 3: Non repetitive surge peak on-state current for a sinusoidal pulse with width: t≤10ms,
and corresponding value of I2t.
Fig. 4: On-state characteristics (maximum values).
DC GENERAL ELECTRICAL CHARACTERISTICS (continued)
CONTROLLER AVS1ACP08 Toper = 25°C (unless otherwise specified)
Value
Symbol
Parameter
Unit
Min.
Typ.
Max.
-9
-8
V
30
mA
0.7
mA
VSS (pin 1) (Vreg)
Shunt regulator
-10
ISS (pin 1) (Vreg)
(@ VSS = 9V)
Supply current
0.4
ISS (pin 1)
(@ triac gate non
connected)
Quiescent current
F (pin 3)
(@ R = 91kΩ)
(C = 100pF)
Oscillator frequency
42
44
46
KHz
VM (pin 8)
Vth (3)
Peak voltage of detection high-threshold
4.08
4.25
4.42
V
VM (pin 8)
Vh (3)
Peak voltage of detection hysteresis
0.370
0.4
0.420
V
Zero-crossing detection high-threshold
95
110
125
mV
Zero-crossing detection hysteresis
27
50
80
mV
(1) VM (pin 8)
VM (pin 8)
Vth (3)
Vh (3)
(2)
Vrazht (4)
Power-on-reset activation threshold
(2)
Vrazlt (4)
Power-down-reset activation threshold
Mode (pin 7)
VIL
VIH
(4)
(4)
Vreg x 0.89
3
V
6.5
V
0.3 Vreg
V
0.7 Vreg
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 VSS
(4) : Voltage referred to VDD
4/7
AVS12
POWER-ON AND POWER-OFF RESET BEHAVIOUR
Normal operation
Undetermined Power-on reset
Power-off reset Undetermined
0V
0V
-2.7V
-2.7V
Vrazlt
Vrazht
Vreg = VSS - VDD
TYPICAL APPLICATION
110 V
or
220V
NTC
NTC
1N
4007
2
x
9.1KΩ
1W
R1
1MΩ
1%
R2
18KΩ
1%
option VDD
VM
VSS
390Ω
7
8
5
AVS1ACP08
3
2
91kΩ 1 %
100pF 5 %
AVS12CB
1
VG
A2
G
A1
4V
DD
VSS
33µF
16V
AVS12
5/7
AVS12
ORDERING INFORMATION
AVS12
CONTROLLER
TRIAC
AVS 1A C P08
AUTOMATIC
VOLTAGE
SWITCH
AVS 12 C B
AUTOMATIC
VOLTAGE
SWITCH
PACKAGE:
DIP-8
IDENTIFICATION
IDENTIFICATION
OPERATING
TEMPERATURE
C = 0/70°C
PACKAGE B:
TO-220AB
OPERATING
TEMPERATURE
C = 0/70°C
PACKAGE MECHANICAL DATA
DIP-8 Plastic (controller)
DIMENSIONS
REF.
B1
B
b
Typ. Max. Min.
L
F
a1
0.70
0.027
B
1.39
1.65 0.055
0.065
B1
0.91
1.04 0.036
0.041
b
Z
E
b1
0.5
0.38
D
8
5
1
4
0.020
0.50 0.015
0.020
9.80
0.385
E
8.8
0.346
e
2.54
0.100
e3
7.62
0.300
F
7.1
0.280
I
4.8
0.189
L
Z
6/7
Typ. Max.
b1
e
e3
D
Inches
Min.
I
a1
Millimetres
3.3
0.44
0.130
1.60 0.017
0.063
AVS12
PACKAGE MECHANICAL DATA
TO-220AB (Plastic) (Triac)
DIMENSIONS
REF.
B
Millimeters
Inches
Min. Typ. Max. Min. Typ. Max.
C
b2
A
15.20
a1
L
15.90 0.598
3.75
0.625
0.147
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
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
F
I
A
l4
c2
a1
l3
l2
a2
b1
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
c1
e
M
■
■
■
2.60
0.102
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
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of
use of such information nor for any infringement of patents or other rights of third parties which may result from its use. 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.
The ST logo is a registered trademark of STMicroelectronics
© 2002 STMicroelectronics - Printed in Italy - All rights reserved.
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