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july 2010 doc id 15237 rev 3 1/13 13 acst10 overvoltage protected ac switch features triac with overvoltage crowbar technology low i gt (< 10 ma) or high immunity (i gt < 35 ma) version high noise immunity: static dv/dt > 2000 v/s to-220fpab insulated package: 1500 v rms benefits enables equipment to meet iec 61000-4-5 high off-state reliabilit y with planar technology need no external over voltage protection reduces the power passi ve component count high immunity against fast transients described in iec 61000-4-4 standards applications ac mains static switching in appliance and industrial control systems drive of medium power ac loads such as: ? universal motor of washing machine drum ? compressor for fridge or air conditioner description the acst10 series belongs to the acs?/acst power switch family built with a.s.d. ? (application specific discrete) technology. this high performance device is suited to home appliances or industrial systems, and drives loads up to 10 a. this acst10 switch has a triac structure and a high voltage clamping device to absorb the inductive turn-off energy and withstand transients such as those described in the iec 61000-4-5 standard. the acst1010-7 needs a low gate current to be activated (i gt < 10 ma) and still shows a high noise immunity complying with iec 61000-4-4 standard. the acst1035-7 offers a high static dv/dt immunity of 2 kv/s minimum. figure 1. functional diagram tm : acs is a trademark of stmicroelectronics ?: a.s.d. is a registered trademark of stmicroelectronics table 1. device summary symbol value unit i t(rms) 10 a v drm /v rrm 700 v i gt 10 or 35 ma to-220ab acst1010-7t acst1035-7t to-220fpab acst1010-7fp ACST1035-7FP com out out g com out g g com out www.st.com
characteristics acst10 2/13 doc id 15237 rev 3 1 characteristics table 2. absolute ratings (limiting values) symbol parameter value unit i t(rms) on-state rms current (full sine wave) to-220ab t c = 105 c 10 a to-220fpab t c = 84 c i tsm non repetitive surge p eak on-state current t j initial = 25 c, ( full cycle sine wave) f = 60 hz t p = 16.7 ms 105 a f = 50 hz t p = 20 ms 100 a i 2 ti 2 t for fuse selection t p = 10 ms 66 a 2 s di/dt critical rate of rise on-state current i g = 2 x i gt, (t r 100 ns) f = 120 hz t j = 125 c 100 a/s v pp non repetitive line peak pulse voltage (1) t j = 25 c 2 kv p g(av) average gate power dissipation t j = 125 c 0.1 w p gm peak gate power dissipation (t p = 20 s) t j = 125 c 10 w i gm peak gate current (t p = 20 s) t j = 125 c 1.6 a t stg storage temperature range -40 to +150 c t j operating junction temperature range -40 to +125 c t l maximum lead solder temperature during 10 ms (at 3 mm from case) 260 c v ins(rms) insulation rms voltage t0-220fpab 1500 v 1. according to test described in iec 61000-4-5 standard and figure 17 table 3. electrical characteristics symbol test cond itions quadrant t j value unit acst1010-7 acst1035-7 i gt (1) v out = 12 v, r l = 33 i - ii - iii 25 c max. 10 35 ma v gt v out = 12 v, r l = 33 i - ii - iii 25 c max. 1.0 v v gd v out = v drm , r l = 3.3 i - ii - iii 125 c min. 0.2 v i h (2) i out = 500 ma 25 c max. 30 50 ma i l i g = 1.2 x i gt i - ii - iii 25 c max. 50 70 ma dv/dt (2) v out = 67 % v drm , gate open 125 c min. 200 2000 v/s (di/dt)c (2) (dv/dt)c = 15 v/s 125 c min. 4.4 a/ms without snubber 12 v cl i cl = 0.1 ma, t p = 1 ms 25 c min. 850 v 1. minimum i gt is guaranteed at 5% of i gt max 2. for both polarities of ou t pin referenced to com pin
acst10 characteristics doc id 15237 rev 3 3/13 table 4. static characteristics symbol test conditions value unit v tm (1) i out = 14.1 a, t p = 500 s t j = 25 c max. 1.5 v v t0 (1) threshold voltage t j = 125 c max. 0.9 v r d (1) dynamic resistance t j = 125 c max. 35 m i drm i rrm v out = v drm / v rrm t j = 25 c max. 20 a t j = 125 c max. 1.2 ma 1. for both polarities of ou t pin referenced to com pin table 5. thermal characteristics symbol parameter value unit r th(j-c) junction to case (ac) to-220ab 1.7 c/w to-220fpab 3.5 c/w r th(j-a) junction to ambient to-220ab to-220fpab 60 c/w figure 2. maximum power dissipation vs. rms on-state current (full cycle) figure 3. on-state rms current vs. case temperature (full cycle) p(w) 0 1 2 3 4 5 6 7 8 9 10 11 12 012345678910 i (a) t(rms) i (a) t(rms) 0 1 2 3 4 5 6 7 8 9 10 11 0 25 50 75 100 125 to-220fpab to-220ab t (c) c figure 4. on-state rms current vs. ambient temperature (free air convection full cycle) figure 5. relative variation of thermal impedance vs. pulse duration i (a) t(rms) 0,0 0,5 1,0 1,5 2,0 2,5 3,0 0 25 50 75 100 125 t amb (c) k=[z /r ] th th 1.0e-02 1.0e-01 1.0e+00 1.0e-03 1.0e-02 1.0e-01 1.0e+00 1.0e+01 1.0e+02 1.0e+03 z th(j-a) to -220ab to -220fpab to-220ab to-220fpab t p (s) z th(j-c)
characteristics acst10 4/13 doc id 15237 rev 3 figure 6. on-state characteristics (maximal values) figure 7. non repetitive surge peak on-state current vs. number of cycles (t j initial = 25 c) i (a) tm 1 10 100 012345 i tm (a) t j =25 c t j =125 c t j max : v to = 0.90 v r d = 35 m v tm (v) i ( a ) tsm 0 10 20 30 40 50 60 70 80 90 100 110 1 10 100 non repetitive t j initial=25 c one cycle t=20ms repetitive t c =105 c number of cycles figure 8. non repetitive surge peak on-state current for a sinusoidal pulse and corresponding value of i2t figure 9. relative variation of gate triggering current (i gt ) and gate triggering voltage vs. junction temperature i (a), i t (a s) tsm 22 1 10 100 1000 10000 0.01 0.10 1.00 10.00 t j initial=25 c di/dt limitation: 100 a/s i tsm i2t t (ms) p i , v ,[t /i [t = 25 c] gt gt jgt j t (c) j 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -50 -25 0 25 50 75 100 125 iq3 gt i q1-q2 gt v q1-q2-q3 gt figure 10. relative variation of holding (i h ) and latching current (i l ) vs. junction temperature figure 11. relative variation of critical rate of decrease of main current (di/dt)c vs. (dv/dt)c 0.0 0.5 1.0 1.5 2.0 2.5 -50 -25 0 25 50 75 100 125 i ,i [t ]/i ,i [t = 25 c] hl j hl j i l t (c) j i h typical values 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.1 1 10 100 (di/dt)c [(dv/dt)c] / specified (di/dt)c (dv/dt)c (v/s) acst10-7cxx acst10-7sxx
acst10 characteristics doc id 15237 rev 3 5/13 figure 14. relative variation of maximum clamping voltage, v cl vs. junction temperature figure 12. relative variation of critical rate of decrease of main current (di/dt)c vs. junction temperature figure 13. relative variation of static dv/dt vs. junction temperature (di/dt)c[t ] / j (di/dt)c[t =125c] j t j (c) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 25 50 75 100 125 t j (c) 0 1 2 3 4 5 6 7 8 9 10 11 25 50 75 100 125 v=v= 469v dr (dv/dt)[t ] / (dv/dt)[t = 125 c] jj 0.85 0.90 0.95 1.00 1.05 1.10 1.15 -50 -25 0 25 50 75 100 125 t (c) j v [t ] / v [t = 25 c] cl j cl j minimum values
application information acst10 6/13 doc id 15237 rev 3 2 application information 2.1 typical application description the acst10 device has been designed to control medium power load, such as ac motors in home appliances. thanks to its thermal and turn off commutation performances, the acst10 switch is able to drive an inductive load up to 10 a with no turn off additional snubber. it also provides high thermal performances in static and transient modes such as the compressor inrush current or high torque operating conditions of an ac motor. thanks to its low gate triggering current level, the acst1010-7 can be driven directly by an mcu through a simple gate resistor as shown figure 15 . figure 15. compressor control ? typical diagram compressor electronic starter electronic thermostat acst rg acst power supply ac mains gate driver logical circuitry 1 2 3 ptc compressor with integrated e-starter compressor start switch run switch ptc rg acst power supply gate driver acst rg ac mains compressor with external electronic drive
acst10 application information doc id 15237 rev 3 7/13 figure 16. universal drum motor control ? typical diagram 2.2 ac line transient voltage ruggedness in comparison with standard triacs, which are not robust against surge voltage, the acst10 is self-protected against over-voltage, specified by the new parameter v cl . the acst10 switch can safely withs tand ac line transient voltages either by clamping the low energy spikes, such as inductive spikes at switch off, or by switching to the on state (for less than 10 ms) to dissipate higher energy shocks through the load. this safety feature works even with high turn-on current ramp up. the test circuit of figure 17 represents the acst10 application, and is used to stress the acst switch according to the iec 61000-4-5 standard conditions. with the additional effect of the load which is limiting th e current, the acst switch withstands the voltage spikes up to 2 kv on top of the peak line voltage. the protection is based on an overvoltage crowbar technology. the acst10 folds back safely to the on state as shown in figure 18 . the acst10 recovers its blocking voltage capabilit y after the surge and th e next zero current crossing. such a non repetitive test can be done at least 10 times on each ac line voltage polarity. universal motor motor direction setting speed motor regulation rg ac mains stator mcu vcc 12v acst rotor mcu
application information acst10 8/13 doc id 15237 rev 3 figure 17. overvoltage ruggedness test circuit for resistive and inductive loads for iec 61000-4-5 standards figure 18. typical current and voltage waveforms across the acst10 during iec 61000-4-5 standard test a c mains r filtering unit rg model of the load rgene surge generator acst10 2kv surge l r = 8 , l = 4 h, v pp = 2 kv i v 0 0 v peak =v cl 1.2/50 s voltage surge 8/20 s current surge
acst10 ordering information scheme doc id 15237 rev 3 9/13 3 ordering information scheme figure 19. ordering information scheme acs t 10 10 - 7 fp ac switch topology on-state rms current sensitivity voltage package t = triac 10 = 10 a 10 = 10 ma 35 = 35 ma 7 = 700 v fp = to-220fpab t = to-220ab
package information acst10 10/13 doc id 15237 rev 3 4 package information epoxy meets ul94, v0 recommended torque: 0.4 to 0.6 nm 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-220ab dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.173 0.181 c 1.23 1.32 0.048 0.051 d 2.40 2.72 0.094 0.107 e 0.49 0.70 0.019 0.027 f 0.61 0.88 0.024 0.034 f1 1.14 1.70 0.044 0.066 f2 1.14 1.70 0.044 0.066 g 4.95 5.15 0.194 0.202 g1 2.40 2.70 0.094 0.106 h2 10 10.40 0.393 0.409 l2 16.4 typ. 0.645 typ. l4 13 14 0.511 0.551 l5 2.65 2.95 0.104 0.116 l6 15.25 15.75 0.600 0.620 l7 6.20 6.60 0.244 0.259 l9 3.50 3.93 0.137 0.154 m 2.6 typ. 0.102 typ. diam. 3.75 3.85 0.147 0.151 a c d l7 dia l5 l6 l9 l4 f h2 g g1 l2 f2 f1 e m
acst10 package information doc id 15237 rev 3 11/13 table 7. to-220fpab dimensions ref. dimensions millimeters inches min. max. min. max. a 4.4 4.6 0.173 0.181 b 2.5 2.7 0.098 0.106 d 2.5 2.75 0.098 0.108 e 0.45 0.70 0.018 0.027 f 0.75 1 0.030 0.039 f1 1.15 1.50 0.045 0.059 f2 1.15 1.50 0.045 0.059 g 4.95 5.20 0.195 0.205 g1 2.4 2.7 0.094 0.106 h 10 10.4 0.393 0.409 l2 16 typ. 0.63 typ. l3 28.6 30.6 1.126 1.205 l4 9.8 10.6 0.386 0.417 l5 2.9 3.6 0.114 0.142 l6 15.9 16.4 0.626 0.646 l7 9.00 9.30 0.354 0.366 diam. 3.00 3.20 0.118 0.126 h a b dia l7 l6 l5 f1 f2 f d e l4 g1 g l2 l3
ordering information acst10 12/13 doc id 15237 rev 3 5 ordering information 6 revision history table 8. ordering information order code marking package weight base qty packing mode acst1010-7t acst10107 to-220ab 2.3 g 50 tube acst1010-7fp to-220fpab 2.3 g 50 tube acst1035-7t acst10357 to-220ab 2.3 g 50 tube ACST1035-7FP to-220fpab 2.3 g 50 tube table 9. document revision history date revision changes 02-dec-2008 1 first issue 13-apr-2009 2 updated ecopack statement. reformatted for consistency with other datasheets in this product class. 01-jul-2010 3 updated order code in table 3.
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