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ACS102-6T
AC switch family Transient protected AC switch (ACSTM)
Main product characteristics
IT(RMS) VDRM/VRRM IGT

0.2 A 600 V 5 mA
COM COM NC
G NC NC OUT NC
COM OUT G
Overvoltage protection by crowbar technology High noise immunity - static dV/dt > 300 V/s
SO-8 ACS102-6T1 Description
TO-92 ACS102-6TA
Applications

AC ON/OFF static switching in appliances and industrial control systems Drive of low power high inductive or resistive loads like: - relay, valve, solenoid, - dispenser, door lock - micro-motor
The ACS102-6T belongs to the AC line switch family. This high performance switch can control a load of up to 0.2A. The ACS102-6T switch includes an overvoltage crowbar structure to absorb the overvoltage energy, and a gate level shifter driver to separate the digital controller from the main switch. It is triggered with a negative gate current flowing out of the gate pin.
Benefits

Needs no external protection snubber or varistor. Enables equipment to meet IEC 61000-4-5. Reduces component count by up to 80%. Interfaces directly with the micro-controller. Common package tab connection supports connection of several alternating current switches (ACS) on the same cooling pad. Integrated structure based on ASD(1) technology
Functional diagram
OUT
G
Order code
Part number ACS102-6TA ACS102-6TA-TR ACS102-6T1 ACS102-6T1-TR Marking ACS1026T ACS1026T ACS1026T ACS1026T
COM
COM OUT G Common drive reference to connect to the mains Output to connect to the load. Gate input to connect to the controller through gate resistor
1. ASD: Application Specific Devices
TM: ACS is a trademark of STMicroelectronics
January 2006
Rev 1 1/11
www.st.com 11
1 Characteristics
ACS102-6T
1
Table 1.
Symbol IT(RMS)
Characteristics
Absolute maximum ratings (Tamb = 25 C, unless otherwise specified)
Parameter TO-92 RMS on-state current (full sine wave) SO-08 Non repetitive surge peak on-state current (full cycle sine wave, Tj initial = 25 C) It Value for fusing Critical rate of rise of on-state current IG = 2xIGT, tr 100 ns Non repetitive line peak mains voltage(1) Peak gate current Peak positive gate voltage Average gate power dissipation Storage junction temperature range Operating junction temperature range tp = 20 s f = 120 Hz f = 60 Hz f = 50 Hz Tamb = 100 C Tamb = 100 C t = 16.7 ms t = 20 ms tp = 10 ms Tj = 125 C Tj = 25 C Tj = 125 C Tj = 125 C Tj = 125 C 7.6 A 7.3 0.38 50 2 1 10 0.1 -40 to +150 -30 to +125 As A/s kV A V W C Value 0.2 Unit A
ITSM It dI/dt VPP IGM VGM PG(AV) Tstg Tj
1. according to test described by IEC 61000-4-5 standard and Figure 16
Table 2.
Symbol IGT (1) VGT VGD IH (2) IL(2) dV/dt (2) (dI/dt)c (2) VCL
Electrical characteristics (Tj = 25 C, unless otherwise specified)
Test conditions VOUT = 12 V, RL = 33 VOUT = VDRM, RL =3.3 k, Tj = 125 C IOUT = 100 mA IG = 1.2 x IGT VOUT = 67% VDRM, gate open, Tj = 125 C Without snubber (15 V/s), turn-off time 20 ms, Tj = 125 C ICL = 0.1 mA, tp = 1 ms, Tj = 125 C Quadrant II - III II - III II - III MAX MAX MIN MAX MAX MIN MIN MIN Value 5 0.9 0.15 20 25 300 0.15 650 Unit mA V V mA mA V/s A/ms V
1. minimum IGT is guaranteed at 10% of IGT max 2. for both polarities of OUT referenced to COM
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ACS102-6T
Table 3.
Symbol VTM (1) VTO (1) RD (1) IDRM IRRM VOUT = 600 V ITM= 0.3 A, tp = 380 s
1 Characteristics
Static electrical characteristics
Test conditions Tj = 25 C Tj = 125 C Tj = 125 C Tj = 25 C MAX Tj = 125 C 0.2 mA MAX MAX MAX Value 1.2 0.80 500 2 Unit V V m A
1. for both polarities of OUT referenced to COM
Table 4.
Symbol Rth (j-l) Rth (j-a)
Thermal resistance
Parameter Junction to lead (AC) Junction to ambient S = 40 mm SO-8 150 TO-92 TO-92 Value 60 150 C/W Unit
Figure 1.
P (W)
0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 0.00
Maximum power dissipation vs RMS Figure 2. on-state current (full cycle)
0.22
RMS on-state current vs ambient temperature (full cycle)
IT(RMS) (A)
=180
0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06
180
0.04 0.02 0.00 0
IT(RMS) (A)
0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20
a=180 Printed circuit board FR4 Natural convection
Tamb C
50 75 100 125
25
3/11
1 Characteristics
ACS102-6T
Figure 4. Relative variation of gate trigger current, holding current and latching current vs junction temperature
Figure 3.
Relative variation of junction to ambient thermal impedance vs pulse duration and package
K=[Zth(j-a) /Rth(j-a) ]
1.E+00
IGT, IH, IL [T j] / IGT, IH, IL [T j=25C]
2.5
2.0
IGT
1.5
1.E-01
TO-92
SO-8
IL & IH
1.0
0.5
tP (S)
1.E-02 1.E-03
Tj(C) 0.0
1.E+01 1.E+02 1.E+03
1.E-02
1.E-01
1.E+00
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130
Figure 5.
Non repetitive surge peak on-state current vs number of cycles
Figure 6.
Non repetitive surge peak on-state current for a sinusoidal pulse with width tp<10 ms, and corresponding value of It (Tj initial = 25 C).
ITSM (A)
10 9 8 7 6 5 4 3 2 1 0 1 10 100 Number of cycles 1000
1.E-01
Repetitive Tamb=100C Non repetitive Tj initial=25C
t=20ms
ITSM(A), It (As)
1.E+03
Tj initial=25C
One cycle
1.E+02
ITSM
1.E+01
1.E+00
It
tp(ms) 0.01 0.10 1.00 10.00
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ACS102-6T
Figure 7. On-state characteristics (maximal values) Figure 8.
1 Characteristics
SO-8 junction to ambient thermal resistance versus copper surface under tab (PCB FR4, copper thickness 35 m)
ITM(A)
10.00
Tj max.: Vto= 0.8 V Rd= 500 m
Rth(j-a) (C/W)
160
SO-8
140 120
1.00
Tj=125C Tj=25C
100 80 60 40 20
0.10
VTM(V) 0.01 0.0
0
SCU(mm)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
50
100
150
200
250
300
Figure 9.
Relative variation of critical rate of decrease of main current (di/dt)c versus junction temperature
Figure 10. Relative variation of critical rate of decrease of main current (di/dt)c vs (dV/dt)c, with turn-off time < 20 ms
2.0 1.8
(dI/dt)c [Tj] / (dI/dt)c [Tj=125 C]
20 18 16 14 12 10 8 6 4 2 0 55 65 75 85 95 105 115 125
Vout = 400 V
(dI/dt)c [ (dV/dt) c ] / Specified (dI/dt) c
Vout = 400 V
1.6 1.4 1.2 1.0 0.8 0.6 0.4
Tj (C)
0.2 0.0 0.1 1
(dV/dt)c (V/s)
10
100
Figure 11. Relative variation of static dV/dt versus junction temperature
dV/dt [T j] / dV/dt [T j=125C]
Figure 12. Relative variation of the maximal clamping voltage versus junction temperature (min value)
VCL [T j] / VDRM
1.20
8 7 6 5
Vout=400V
1.10 1.00 0.90
4 0.80 3 2 1 0 25 50 75 100 125 Tj(C) 0.50 -25 0 25 50 75 100 125 0.70 0.60 Tj(C)
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2 AC line switch - basic application
ACS102-6T
2
AC line switch - basic application
The ACS102-6T switch is triggered by a negative gate current flowing from the gate pin G. The switch can be driven directly by the digital controller through a resistor as shown in Figure 13. Thanks to its overvoltage protection and turn-off commutation performance, the ACS102-6T switch can drive a small power high inductive load with neither varistor nor additional turn-off snubber. Figure 13. Typical application program
Valve AC Mains Vss MCU Vdd Rg ACS102-6T
Power supply
2.1
Protection against overvoltage: the best choice is ACS
In comparison with standard triacs, which are not robust against surge voltage, the ACS102-6T is over-voltage self-protected, specified by the new parameter VCL. This feature is useful in two operating conditions: in case of turn-off of very inductive load, and in case of surge voltage that can occur on the electrical network.
2.1.1
High inductive load switch-off: turn-off overvoltage clamping
With high inductive and low RMS current loads the rate of decrease of the current is very low. An overvoltage can occur when the gate current is removed and the OUT current is lower than IH. As shown in Figure 14 and Figure 15, at the end of the last conduction half-cycle, the load current decreases (1). The load current reaches the holding current level IH (2), and the ACS turns off (3). The water valve, as an inductive load (up to 15 H), reacts as a current generator and an overvoltage is created, which is clamped by the ACS (4). The current flows through the ACS avalanche and decreases linearly to zero. During this time, the voltage across the switch is limited to the clamping voltage VCL. The energy stored in the inductance of the load is dissipated in the clamping section that is designed for this purpose. When the energy has been dissipated, the ACS voltage falls back to the mains voltage value (5).
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ACS102-6T
2 AC line switch - basic application
Figure 14. Effect of the switching off of a high inductive load - typical clamping capability of ACS102-6T
4 VPEAK = VCL I OUT (5 mA/div) 3 1 IH VOUT (200 V/div)
Figure 15. Description of the different steps during switching off of a high inductive load
I OUT
1
IH
2 5
3 4
VOUT VCL
2
5
100s/div
2.1.2
AC line transient voltage ruggedness
The ACS102-6T switch is able to withstand safely the AC line transients either by clamping the low energy spikes or by breaking over under high energy shocks, even with high turn-on current rises. The test circuit shown in Figure 16 is representative of the final ACS102-6T application, and is also used to test the ACS switch according to the IEC 61000-4-5 standard conditions. Thanks to the load limiting the current, the ACS102-6T switch withstands the voltage spikes up to 2 kV above the peak line voltage. The protection is based on an overvoltage crowbar technology. Actually, the ACS102-6T breaks over safely as shown in Figure 17. The ACS102-6T recovers its blocking voltage capability after the surge (switch off back at the next zero crossing of the current). Such non-repetitive tests can be done 10 times on each AC line voltage polarity.
Figure 16. Overvoltage ruggedness test circuit Figure 17. Typical current and voltage waveforms across the ACS102-6T for resistive and inductive loads during IEC 61000-4-5 standard test with conditions equivalent to IEC 61000-4-5 standards
VPEAK I OUT (2 A/div)
Model of the load L R 150 5H ACS102-6Tx 2.4 kV surge Rg 220
Surge generator "1.2/50 waveform" Rgene 2
VOUT (200 V/div)
200ns/div
7/11
3 Ordering information scheme
ACS102-6T
3
Ordering information scheme
ACS
AC Switch series Number of switches Current 02 = 0.2 ARMS Voltage 6 = 600 V Sensitivity T = 5 mA Package A = TO-92 1 = SO-8 Packing TR = Tape and reel Blank = (TO-92) Bulk (SO-8) Tube
1
02 - 6
T
A -TR
4
4.1
Package information
TO-92 Mechanical data
DIMENSIONS REF
A a B C
Millimeters Min. Typ. 1.35 4.70 2.54 4.40 12.70 3.70 0.50 0.173 0.500 Max. Min.
Inches Typ. 0.053 0.185 0.100 Max.
A B C D
F
D
E
E F a
0.146 0.019
8/11
ACS102-6T
4 Package information
4.2
SO-8 Mechanical data
DIMENSIONS REF. Millimetres Min. A
ddd C
A2 A C (Seating Plane) h x 45
Inches Min. Typ. Max. 0.069 0.010 0.065 0.020 0.010 0.197 0.157 0.050
Typ.
Max.
1.350 0.100 1.100 0.330 0.190 4.800 3.800 1.270 5.800 0.250 0.400 0
1.75 0.053 0.250 0.004 1.650 0.043 0.510 0.013 0.250 0.008 5.000 0.189 4.000 0.150
A1
0.25mm (Gage Plane)
A2 B C
B
e
A1
k
L
D
D
8 5
E
E H
e H h L k ddd
1
4
6.200 0.228 0.500 0.010 1.270 0.016 8 0.100 0
0.244 0.020 0.050 8 0.004
Figure 18. SO-8 Footprint
6.8 0.6 4.2
1.27
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
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5 Ordering information
ACS102-6T
5
Ordering information
Part number ACS102-6TA ACS102-6TA-TR ACS102-6T1 ACS102-6T1-TR Marking ACS1026T ACS1026T ACS1026T ACS1026T Package TO-92 TO-92 SO-8 SO-8 Weight Base Qty Packing mode Bulk Tape and Reel Tube Tape & reel
6
Revision history
Date 05-Jan-2006 Revision 1 Initial release. Changes
10/11
ACS102-6T
6 Revision history
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. All other names are the property of their respective owners (c) 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com
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