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may 2011 doc id 11961 rev 3 1/11 11 ACS102-6T transient protected ac switch (acs?) features 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 microcontroller common package tab connection supports connection of several alternating current switches (acs) on the same cooling pad integrated structure based on asd technology overvoltage protection by crowbar technology high noise immunity - static dv/dt > 300 v/s applications alternating current 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 description 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. figure 1. functional diagram tm: acs is a trademark of stmicroelectronics asd: application specific devices table 1. device summary symbol value unit i t(rms) 0.2 a v drm /v rrm 600 v i gt 5ma com out g com (6) nc (8) com (7) g (5) nc (4) nc (3) out (2) nc (1) so-8 ACS102-6T1 to-92 ACS102-6Ta out com g com common drive reference to connect to the mains out output to connect to the load. g gate input to connect to the controller through gate resistor www.st.com
characteristics ACS102-6T 2/11 doc id 11961 rev 3 1 characteristics table 2. absolute maximum ratings (t amb = 25 c, unless otherwise specified) symbol parameter value unit i t(rms) on-state rms current (full sine wave) to-92 t amb = 100 c 0.2 a so-08 t amb = 100 c i tsm non repetitive surge p eak on-state current (full cycle sine wave, t j initial = 25 c) f = 60 hz t = 16.7 ms 7.6 a f = 50 hz t = 20 ms 7.3 i2t i2t value for fusing t p = 10 ms 0.38 a2s di/dt critical rate of rise of on-state current i g = 2xi gt , tr 100 ns f = 120 hz t j = 125 c 50 a/s v pp non repetitive line peak mains voltage (1) t j = 25 c 2 kv i gm peak gate current t p = 20 s t j = 125 c 1 a v gm peak positive gate voltage t j = 125 c 10 v p g(av) average gate power dissipation t j = 125 c 0.1 w t stg t j storage junction temperature range operating junction temperature range -40 to +150 -30 to +125 c 1. according to test described by iec 61000-4-5 standard and figure 17 table 3. electrical characteristics (t j = 25 c, unless otherwise specified) symbol test conditions quadrant value unit i gt (1) v out = 12 v, r l = 33 ii - iii max 5 ma v gt ii - iii max 0.9 v v gd v out = v drm , r l =3.3 k , t j = 125 c ii - iii min 0.15 v i h (2) i out = 100 ma max 20 ma i l (2) i g = 1.2 x i gt max 25 ma dv/dt (2) v out = 67% v drm , gate open, t j = 125 c min 300 v/s (di/dt)c (2) without snubber (15 v/s), turn-off time 20 ms, t j = 125 c min 0.15 a/ms v cl i cl = 0.1 ma, t p = 1 ms, t j = 125 c min 650 v 1. minimum i gt is guaranteed at 10% of i gt max 2. for both polarities of out referenced to com
ACS102-6T characteristics doc id 11961 rev 3 3/11 table 4. static electrical characteristics symbol test conditions value unit v tm (1) i tm = 0.3 a, t p = 380 s tj = 25 c max 1.2 v v to (1) tj = 125 c max 0.80 v r d (1) tj = 125 c max 500 m i drm i rrm v out = 600 v tj = 25 c max 2a tj = 125 c 0.2 ma 1. for both polarities of out referenced to com table 5. thermal resistance symbol parameter value unit r th (j-l) junction to lead (ac) to-92 60 c/w r th (j-a) junction to ambient to-92 150 s = 40 mm2 so-8 150 figure 2. maximum power dissipation versus on-state rms current (full cycle) figure 3. on-state rms current versus ambient temperature (full cycle) 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 p (w) i (a) t(rms) =180 180 i (a) t(rms) 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.22 0 25 50 75 100 125 a=180 printed circuit board fr4 natural convection tc amb
characteristics ACS102-6T 4/11 doc id 11961 rev 3 figure 4. relative variation of junction to ambient thermal impedance versus pulse duration and package figure 5. relative variation of gate trigger, holding and latching current versus junction temperature 1.e-02 1.e-01 1.e+00 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 1.e+02 1.e+03 k=[z th(j-a) /r th(j-a) ] to-92 t (s) p so-8 0.0 0.5 1.0 1.5 2.0 2.5 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 i gt ,i h ,i l [t j ]/i gt ,i h ,i l [t j =25c] t j (c) i l & i h i gt figure 6. non repetitive surge peak on-state current versus number of cycles figure 7. non repetitive surge peak on-state current for a sinusoidal pulse, and corresponding value of i2t 0 1 2 3 4 5 6 7 8 9 10 1 10 100 1000 number of cycles i tsm (a) non repetitive tj initial=25c repetitive t amb =100c one cycle t=20ms 1.e-01 1.e+00 1.e+01 1.e+02 1.e+03 0.01 0.10 1.00 10.00 i tsm (a), i2t (a2s) t j initial=25 c pulse width t p < 10 ms i tsm i2t (ms) t p figure 8. on-state characteristics (maximal values) figure 9. so-8 junction to ambient thermal resistance versus copper surface under tab 0.01 0.10 1.00 10.00 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 i tm ( a ) t j max.: v to = 0.8 v r d = 500 m tj=25c tj=125c v tm (v) 0 20 40 60 80 100 120 140 160 0 50 100 150 200 250 300 r th(j-a) (c/w) so-8 s cu (mm2) pcb fr4, copper thickness 35 m
ACS102-6T characteristics doc id 11961 rev 3 5/11 figure 10. relative variation of critical rate of decrease of main current (di/dt)c versus junction temperature figure 11. relative variation of critical rate of decrease of main current (di/dt)c versus (dv/dt)c (di/dt) [t ] / (di/dt) [t =125 c] cc jj 0 1 2 3 4 5 6 7 8 9 10 11 12 0 10 20 30 40 50 60 70 80 90 100 110 120 130 v out =300 v t (c) j (di/dt) c [(dv/dt) c ] / specified (di/dt) c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.1 1 10 100 (dv/dt) c (v/s) v out = 400 v turn-off time < 20 ms figure 12. relative variation of static dv/dt versus junction temperature figure 13. relative variation of the maximal clamping voltage versus junction temperature (min value) 0 1 2 3 4 5 6 7 8 25 50 75 100 125 dv/dt [t j ]/dv/dt[t j =125c] v out =400v t j (c) 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 -25 0 25 50 75 100 125 v cl [t j ]/v drm t j (c)
alternating current line switch - basic application ACS102-6T 6/11 doc id 11961 rev 3 2 alternating current 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 14 . 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 14. typical application program 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 overvoltage self-protected, specified by the new parameter v cl . 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 i h . as shown in figure 15 and figure 16 , at the end of the last con duction half cycle, the load current decreases (1). the load current reaches the holding current level i h (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 v cl . 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). ac mains ACS102-6T valve power supply mcu v dd v ss rg
ACS102-6T alternating current line switch - basic application doc id 11961 rev 3 7/11 2.1.2 alternating current li ne 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 rise. the test circuit shown in figure 17 is representative of the final ACS102-6T application, and is also used to test the acs switch accord ing 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 18 . the ACS102-6T recovers its blocking voltage capab ility after the surge (swit ch 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 15. effect of the switching off of a high inductive load - typical clamping capability of ACS102-6T figure 16. description of the different steps during switching off of a high inductive load 1 2 3 4 5 i h i (5 ma/div) out v peak =v cl v (200 v/div) out 100s/div i h v cl v out i out 1 2 3 4 5 i h v cl v out i out 1 2 3 4 5 figure 17. overvoltage ruggedness test circuit for resistive and inductive loads figure 18. typical current and voltage waveforms across the ACS102-6T during iec 61000-4-5 standard test 2.4 kv surge surge generator "1.2/50 waveform" rg 220 ACS102-6Tx rgene 2 l 5h r 150 model of the load conditions equivalent to iec 61000-4-5 standards i (2 a/div) out v peak v (200 v/div) out 200ns/div
ordering information scheme ACS102-6T 8/11 doc id 11961 rev 3 3 ordering information scheme figure 19. ordering information scheme acs 1 02 - 6 t a -tr ac switch series number of switches current voltage sensitivity package packing 02 = 0.2 a 6 = 600 v t = 5 ma a = to-92 1 = so-8 tr = tape and reel blank = (to-92) bulk (so-8) tube rms
ACS102-6T package information doc id 11961 rev 3 9/11 4 package information epoxy meets ul94, v0 lead-free packages in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. table 6. to-92 dimensions ref dimensions millimeters inches min. typ. max. min. typ. max. a1.35 0.053 b4.700.185 c2.54 0.100 d4.40 0.173 e 12.70 0.500 f3.700.146 a0.500.019 table 7. so-8 dimensions ref. dimensions millimeters inches min. typ. max. min. typ. max. a1.750.069 a1 0.1 0.25 0.004 0.010 a2 1.25 0.049 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.009 d 4.80 4.90 5.00 0.189 0.193 0.197 e 5.80 6.00 6.20 0.228 0.236 0.244 e1 3.80 3.90 4.00 0.150 0.154 0.157 e 1.27 0.050 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 l1 1.04 0.041 k0 80 8 ppp 0.10 0.004 a f c b a de e1 d 8 4 1 5 e e a a2 b a1 ppp c c k h x 45 l l1 seating plane c
ordering information ACS102-6T 10/11 doc id 11961 rev 3 figure 20. footprint, dimensions in mm (inches) 5 ordering information 6 revision history 6.8 (0.268) 4.2 (0.165) 1.27 (0.050) 0.6 (0.024) table 8. ordering information order code marking package weight base qty packing mode ACS102-6Ta acs1026t to-92 0.2 g 2500 bulk ACS102-6Ta-tr acs1026t to-92 0.2 g 2000 tape and reel ACS102-6T1 acs1026t so-8 0.11 g 100 tube ACS102-6T1-tr acs1026t so-8 0.11 g 2500 tape and reel table 9. document revision history date revision changes 05-jan-2006 1 initial release. 07-jun-2006 2 reformatted to current standards. replaced figure 9. 24-may-2011 3 added pin indications on first page. corrected dimensions in table 7.
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