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july 2010 doc id 7297 rev 10 1/15 15 acst6 overvoltage protected ac switch features triac with overvoltage protection low i gt (< 10 ma) to-220fpab insulated package: 1500 v rms benefits enables equipment to meet iec 61000-4-5 high off-state reliabilit y with planar technology needs no external overvoltage 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 acst6 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 6 a. this acst6 switch embeds a triac structure and a high voltage clamping device able to absorb the inductive turn-off energy and withstand line transients such as those described in the iec 61000-4-5 standards. the acst610 needs only low gate current to be activated (i gt < 10 ma) and still shows a high noise immunity complying with iec standards such as iec 61000-4-4 (fast transient burst test). 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) 6a v drm /v rrm 800 v i gt 10 ma to-220ab acst610-8t to-220fpab ACST610-8FP d2pak acst610-8g i2pak acst610-8r g out out com g out com g out com g out out com g com out www.st.com
characteristics acst6 2/15 doc id 7297 rev 10 1 characteristics table 2. absolute ratings (limiting values) symbol parameter value unit i t(rms) on-state rms current (full sine wave) to-220fpab t c = 92 c 6 a to-220ab/ d 2 pa k / i 2 pa k t c = 106 c d 2 pa k w i t h 1cm 2 copper t amb = 62 c 1.5 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 47 a f = 50 hz t p = 20 ms 45 a i 2 ti 2 t for fuse selection t p = 10 ms 13 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 plastic case) 260 c v ins(rms) insulation rms voltage to-220fpab 1500 v 1. according to test described in iec 61000-4-5 standard and figure 19. table 3. electrical characteristics symbol test conditions quadrant t j value unit i gt (1) v out = 12 v, r l = 33 i - ii - iii 25 c max. 10 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 k i - ii - iii 125 c min. 0.2 v i h (2) i out = 500 ma 25 c max. 25 ma i l i g = 1.2 x i gt i - iii 25 c max. 30 ma i l i g = 1.2 x i gt ii 25 c max. 40 ma dv/dt (2) v out = 67 % v drm , gate open 125 c min. 500 v/s (di/dt) c (2) (dv/dt) c = 15 v/s 125 c min. 3.5 a/ms 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
acst6 characteristics doc id 7297 rev 10 3/15 table 4. static characteristics symbol test conditions value unit v tm (1) 1. for both polarities of ou t pin referenced to com pin i out = 2.1 a, t p = 500 s t j = 25 c max. 1.4 v i out = 8.5 a, t p = 500 s 1.7 v t0 (1) threshold voltage t j = 125 c max. 0.9 v r d (1) dynamic resistance t j = 125 c max. 80 m i drm i rrm v out = v drm / v rrm t j = 25 c max. 20 a t j = 125 c max. 500 a table 5. thermal resistances symbol parameter value unit rt h(j-a) junction to ambient to-220ab to-220fpab 60 c/w i 2 pak 65 junction to ambient (soldered on 1 cm 2 copper pad) d 2 pa k 4 5 r th(j-c) junction to case for full cycle sine wave conduction to-220fpab 4.25 c/w to-220ab d 2 pa k , i 2 pa k 2.5 figure 2. maximum power dissipation versus rms on-state current figure 3. on-state rms current versus case temperature (full cycle) 0 1 2 3 4 5 6 7 8 0123456 p(w) = 180 i t(rms) (a) 180 0 1 2 3 4 5 6 7 0 25 50 75 100 125 i t(rms) (a) t c (c) to-220fpab to-220ab d2pak i2pak = 180
characteristics acst6 4/15 doc id 7297 rev 10 figure 4. on-state rms current versus ambient temperature (free air convection, full cycle) figure 5. relative variation of thermal impedance versus pulse duration figure 6. relative variation of gate trigger current (i gt ) and voltage (v gt ) versus junction temperature figure 7. relative variation of holding current (i h ) and latching current (i l ) versus junction temperature figure 8. surge peak on-state current versus number of cycles figure 9. non repetitive surge peak on-state current and corresponding value of i 2 t versus sinusoidal pulse width i t(rms) (a) t a (c) 0.0 0.5 1.0 1.5 2.0 2.5 0 25 50 75 100 125 =180 d 2 pak with copper surface = 1 cm 2 to-220fpab to220ab i 2 pa k k = [z th / r th ] 1.0e-02 1.0e-01 1.0e+00 t p (s) 1.0e-03 1.0e-01 1.0e+01 1.0e+03 z th(j-c) z th(j-a) to-220ab d2pak i2pak to-220fpab 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -50 -25 0 25 50 75 100 125 i gt ,v gt [t j ] / i gt ,v gt [t j = 25 c] t j (c) i gt q3 i gt q1-q2 v q1-q2-q3 gt (typical values) 0.0 0.5 1.0 1.5 2.0 2.5 -50 -25 0 25 50 75 100 125 i h ,i l [t j ] / i h ,i l [t j = 25 c] t j (c) i l i h (typical values) i tsm (a) number of cycles 0 10 20 30 40 50 1 10 100 1000 number of cycles repetitive t c =106 c non repetitive t j initial = 25 c one cycle t = 20 ms 1 10 100 1000 0.01 0.10 1.00 10.00 dl /dt limitation: 100 a / s t j initial = 25 c i tsm i2t i tsm (a), i2t (a2s) t p (ms)
acst6 characteristics doc id 7297 rev 10 5/15 figure 10. on-state characteristics (maximum values) figure 11. relative variation of critical rate of decrease of main current (di/dt) c versus junction temperature 1 10 100 012345 i tm (a) v tm (v) t j max: v to = 0.90 v r d = 80 m t j = 125 c t j = 25 c 0 1 2 3 4 5 6 7 8 25 50 75 100 125 (dl/dt) c [t j ] / (dl/dt) c [t j = 125 c] t j (c) figure 12. relative variation of static dv/dt immunity versus junction temperature (gate open) figure 13. relative variation of leakage current versus junction temperature 0 1 2 3 4 5 6 25 50 75 100 125 dv/dt [t j ] / dv/dt [t j = 125 c] t j (c) v d =v r = 536 v 25 50 75 100 125 i drm /i rrm [t j ;v drm /v rrm ] / i drm /i rrm [t j = 125 c; 800 v] 1.0e-03 1.0e-02 1.0e-01 1.0e+00 t j (c) v drm =v rrm = 200 v v drm =v rrm = 600 v v drm =v rrm = 800v different blocking voltages figure 14. relative variation of clamping voltage (v cl ) versus junction temperature (minimum values) figure 15. thermal resistance junction to ambient versus copper surface under tab v[t j ] / v [t j = 25 c] cl cl 0.85 0.90 0.95 1.00 1.05 1.10 1.15 -50 -25 0 25 50 75 100 125 t j (c) 0 10 20 30 40 50 60 70 80 0 5 10 15 20 25 30 35 40 d2pak s cu (cm2) printed circuit board fr4, copper thickness = 35 m rth(j-a)(c/w)
application information acst6 6/15 doc id 7297 rev 10 2 application information 2.1 typical application description the acst6 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 acst6 switch is able to drive an inductive load up to 6 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 acst6 can be driven directly by an mcu through a simple gate resistor as shown figure 16 and figure 17 . figure 16. 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
acst6 application information doc id 7297 rev 10 7/15 figure 17. 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 acst6 is self-protected against over-voltage, specified by the new parameter v cl . the acst6 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 18 represents the acst6 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 acst6 folds back safely to the on state as shown in figure 19 . the acst6 recovers its blocking voltage capability after the su rge and the 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 acst6 8/15 doc id 7297 rev 10 figure 18. overvoltage ruggedness test circuit for resistive and inductive loads for iec 61000-4-5 standards figure 19. typical current and voltage waveforms across the acst6 during iec 61000-4-5 standard test ac mains r filtering unit rg model of the load rgene surge generator acst6 2kv surge l r = 18 , l = 2 h, vsurge = 2 kv rg = 220 i v 0 0 v peak =v cl 1.2/50 s voltage surge 8/20 s current surge i peak = 120 a di/dt = 150 a/s
acst6 ordering information scheme doc id 7297 rev 10 9/15 3 ordering information scheme figure 20. ordering information scheme acs t 6 10 - 8 g tr ac switch topology on-state rms current repetitive peak off-state voltage package t = triac 6 = 6 a 8 = 800 v fp = to-220fpab t = to-220ab triggering gate current delivery mode 10 = 10 ma r = i2pak g = d2pak tr = tape and reel blank = tube
package information acst6 10/15 doc id 7297 rev 10 4 package information epoxy meets ul94, v0 cooling method: by conduction (c) recommended torque value (to220ab, to220fpab): 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
acst6 package information doc id 7297 rev 10 11/15 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 1.70 0.045 0.067 f2 1.15 1.70 0.045 0.067 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 dia. 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
package information acst6 12/15 doc id 7297 rev 10 figure 21. footprint (dimensions in mm) table 8. d 2 pak dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.173 0.181 a1 2.49 2.69 0.098 0.106 a2 0.03 0.23 0.001 0.009 b 0.70 0.93 0.027 0.037 b2 1.14 1.70 0.045 0.067 c 0.45 0.60 0.017 0.024 c2 1.23 1.36 0.048 0.054 d 8.95 9.35 0.352 0.368 e 10.00 10.40 0.393 0.409 g 4.88 5.28 0.192 0.208 l 15.00 15.85 0.590 0.624 l2 1.27 1.40 0.050 0.055 l3 1.40 1.75 0.055 0.069 m 2.40 3.20 0.094 0.126 r 0.40 typ. 0.016 typ. v2 0 8 0 8 g l l3 l2 b b2 e * flat zone no less than 2mm a c2 d r a2 m v2 c a1 * 16.90 10.30 8.90 3.70 5.08 1.30
acst6 package information doc id 7297 rev 10 13/15 table 9. i 2 pak double track dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.173 0.181 a1 2.49 2.69 0.098 0.106 b 0.70 0.93 0.027 0.037 b2 1.14 1.70 0.045 0.067 c 0.45 0.60 0.018 0.024 c2 1.23 1.36 0.048 0.053 d 8.95 9.35 0.352 0.368 e 10 10.40 0.394 0.409 g 4.88 5.28 0.192 0.208 l 16.70 17.5 0.657 0.689 l2 1.27 1.40 0.050 0.055 l3 13.82 14.42 0.544 0.568 e l2 a cropping direction c2 d a1 c l l3 g b2 b
ordering information acst6 14/15 doc id 7297 rev 10 5 ordering information table 10. ordering information 6 revision history table 11. document revision history order code marking package weight base qty packing mode ACST610-8FP acst6108 to-220fpab 2.4 g 50 tube acst610-8g d 2 pak 1.5 g 50 tube acst610-8gtr d 2 pak 1.5 g 1000 tape and reel acst610-8r i 2 pak 2.3 g 50 tube acst610-8t to-220ab 1.5 g 50 tube date revision changes jan-2002 7f previous issue. 09-may-2005 8 layout update. no content change. 18-dec-2009 9 document structure and parameter presentation revised for consistency with other acst doc uments. no technical changes. order codes updated. 01-jul-2010 10 updated figure 20.
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