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this is information on a product in full production. september 2012 doc id 023630 rev 1 1/13 13 ACST1635-8FP overvoltage protected ac switch datasheet ? production data features enables equipment to meet iec 61000-4-5 surge with overvoltage crowbar technology high noise immunity against static dv/dt and iec 61000-4-4 burst high junction temperature: t j = 150 c needs no external over-voltage protection v cl gives headroom before clamping then crowbar action reduces component count ecopack ? 2 compliant component complies with ul standard s (file ref: e81734) provides ul certified insulation rated at 1500 v rms applications ac static switching in appliances and industrial control systems drive of medium power ac loads such as: ? coffee making appliances ? universal drum motor of washing machine ? compressor of fridge or air conditioner ? heating and cooking appliances ? vacuum cleaners ? solid state relays figure 1. functional diagram description the ACST1635-8FP belongs to the ac power switch range built with a.s.d. ? technology. this high performance device is designed for home appliances or industrial systems and drives loads up to 16 a. this ACST1635-8FP switch embeds a triac structure with a high voltage crowbar device to absorb the inductive turn-off energy and withstand line surges such as those described in the iec 61000-4-5 (surge immunity test). a.s.d. is a registered trad emark of stmicroelectronics com out g to-220fpab ACST1635-8FP g com out www.st.com
characteristics ACST1635-8FP 2/13 doc id 023630 rev 1 1 characteristics table 1. absolute ratings (limiting values) symbol parameter value unit i t(rms) on-state rms current (full sine wave) t c = 84 c 16 a i tsm non repetitive surge p eak on-state current t j initial = 25 c, (full cycle sine wave) f = 50 hz, t p = 20 ms 140 a f = 60 hz, t p = 16.7 ms 147 i 2 ti 2 t for fuse selection t p = 10 ms 130 a 2 s v drm /v rrm repetitive peak off-stage voltage, gate open t j = 150 c 800 v di/dt critical rate of rise on-state current i g = 2 x i gt, t r ? 100 ns f = 120 hz 100 a/s v pp (1) non repetitive line peak pulse voltage t j = 25 c 2 kv p g(av) average gate power dissipation t j = 150 c 0.1 w p gm peak gate power dissipation (t p = 20 s) t j = 150 c 10 w i gm peak gate current (t p = 20 s) t j = 150 c 1 a t stg storage temperature range -40 to +150 c t j operating junction temperature range -40 to +150 c t l lead temperature for soldering during 10 s 260 c v ins insulation rms voltage (60 seconds) 1.5 kv 1. according to test described by standard iec 61000-4-5 table 2. electrical characteristics symbol test conditions quadrant t j value unit i gt v out = 12 v, r l = 33 ? i - ii - iii 25 c max. 35 ma i gt v out = 12 v, r l = 33 ? i - ii - iii 25 c min. 1.75 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 150 c min. 0.2 v i h (1) i out = 500 ma 25 c max. 30 ma i l i g = 1.2 x i gt i - ii - iii 25 c max. 40 ma dv/dt (1) v out = 67% v drm , gate open 125 c min. 1000 v/s dv/dt (1) v out = 67% v drm , gate open 150c min. 300 v/s (di/dt)c (1) (dv/dt)c ?? 0.1 v/s 125 c min. 36 a/ms 150 c min. 12 a/ms (di/dt)c (1) without snubber 125 c min. 12 a/ms 150 c min. 4 a/ms v cl i cl = 0.1 ma, t p = 1 ms 25 c min. 850 v 1. for both polarities of ou t pin referenced to com pin
ACST1635-8FP characteristics doc id 023630 rev 1 3/13 table 3. static characteristics symbol test conditions value unit v tm (1) i out = 22.6 a, t p = 500 s t j = 25 c max. 1.5 v v t0 (1) threshold voltage t j = 150 c max. 0.9 v r d (1) dynamic resistance t j = 150 c max. 30 m ? i drm i rrm v out = v drm / v rrm t j = 25 c max. 1a t j = 125 c 500 a t j = 150 c 2 ma 1. for both polarities of ou t pin referenced to com pin table 4. thermal characteristics symbol parameter value unit r th(j-c) junction to case (ac) 3.2 c/w r th(j-a) junction to ambient 60 c/w figure 2. maximum power dissipation versus rms on-state current figure 3. on-state rms current versus case temperature 0 2 4 6 8 10 12 14 16 18 20 22 0246810121416 p(w) 180 i (a) t(rms) 0 2 4 6 8 10 12 14 16 18 0 25 50 75 100 125 150 i (a) t(rms) t (c) c figure 4. on-state rms current versus ambient temperature (free air convection) figure 5. relative variation of thermal impedance versus pulse duration 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 25 50 75 100 125 150 t (c) a i (a) t(rms) 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 1.0e+04 k = [z / r ] th th z th(j-c) z th(j-a) t (s) p
characteristics ACST1635-8FP 4/13 doc id 023630 rev 1 figure 6. on-state characteristics (maximum values) figure 7. surge peak on-state current versus number of cycles 1 10 100 1000 012345 i (a) tm v (v) tm t max: v = 0.9 v r = 30 m j to d t = 150 c j t = 25 c j 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 1 10 100 1000 non repetitive t initial = 25 c j repetitive t = 84 c c number of cycles one cycle t = 20 ms i (a) tsm figure 8. non repetitive surge peak on-state current for a sinusoidal figure 9. relative variation of gate trigger current and gate trigger voltage versus junction temperature 10 100 1000 10000 0.01 0.10 1.00 10.00 i a), i2t (a2s) tsm( t (ms) p dl /dt limitation: 100 a / s pulse with width t <10 ms, and corresponding value of i2t p t initial = 25 c j i2t i tsm 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -50 -30 -10 10 30 50 70 90 110 130 150 i gt q1-q2 v gt q1-q2-q3 i gt q3 i ,v [t ]/i ,v [t = 25 c] gt gt j gt gt j typical values t (c) j figure 10. relative variation of holding current and latching current versus junction temperature figure 11. relative variation of critical rate of decrease of main current (di/dt)c versus reapplied (dv/dt)c 0.0 0.5 1.0 1.5 2.0 -50 -30 -10 10 30 50 70 90 110 130 150 i h i l typical values i , [t ] / i , i [t = 25 c] hjhlj i l t (c) j (di/dt)c[(dv/dt) ]/specified(di/dt) cc 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0.1 1.0 10.0 100.0 t j =125 c and 150 c typical values (dv/dt) (v/s) c
ACST1635-8FP characteristics doc id 023630 rev 1 5/13 figure 12. relative variation of critical rate of decrease of main current versus junction temperature figure 13. relative variation of static dv/dt immunity versus junction temperature (typical values) (dl / dt) c [t ] / [t = 150 c] jj (dl / dt) c t (c) j 0 2 4 6 8 10 12 14 16 18 20 25 50 75 100 125 150 typical values dv / dt [t ] / [t = 150 c] jj dv / dt 0 1 2 3 4 5 6 7 25 50 75 100 125 150 (dv/dt) > 5 kv/s @ 150 c exceeding measurements capabilities v = v = 536 v dr t (c) j figure 14. relative variation of the maximal clamping voltage versus junction temperature (minimum value) figure 15. relative variation of leakage current versus junction temperature 0.85 0.90 0.95 1.00 1.05 1.10 1.15 -50 -25 0 25 50 75 100 125 150 v [t /v [t = 25 c] cl j cl j t (c) j 1.0e-05 1.0e-04 1.0e-03 1.0e-02 1.0e-01 1.0e+00 25 50 75 100 125 150 t (c) j v = v = 400 v drm rrm v = v = 600 v drm rrm v = v = 800 v drm rrm *b = leakage current (i drm = i rrm ) at t = 150 c, v drm =v rrm = 800 v j *a = leakage current (i drm = i rrm ) at indicated t j and v drm =v rrm relative leakage current a/b*
application information ACST1635-8FP 6/13 doc id 023630 rev 1 2 application information 2.1 typical application descriptions the ACST1635-8FP device can be used to control medium power load, such as ac motors in home appliances. thanks to its thermal and turn off commutation performances, the ACST1635-8FP switch is able to drive an inductive load up to 16 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. figure 16. ac induction motor control - typical diagram selection of the rotor direction ac induction motor phase shift capacitor + protective air inductance acst mcu ac motor rg c ac mains vcc rg acst l
ACST1635-8FP application information doc id 023630 rev 1 7/13 figure 17. universal drum motor control ? typical diagram the ACST1635-8FP device is also very effective in controlling resistive loads. figure 18. resistive load control - typical diagram universal motor motor direction setting speed motor regulation rg ac mains stator mcu vcc 12v acst rotor mcu g com out ac mains diac variable resistor capacitor lamp or resistance
application information ACST1635-8FP 8/13 doc id 023630 rev 1 2.2 ac line transient voltage ruggedness in comparison with standard triacs, which needs additional protection components against surge voltage, the ACST1635-8FP is self-protected against over-voltage, specified by the new parameter v cl . the ACST1635-8FP switch can safely withstand ac line transient voltages either by clamping the low energy spikes, such as the 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 19 represents the ACST1635-8FP 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 the 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 ACST1635-8FP folds back safely to the on state as shown in figure 20 . the ACST1635-8FP recovers its bl ocking voltage capability after the surge and the next zero crossing current. such a non repetitive test can be done at least 10 times on each ac line voltage polarity. figure 19. overvoltage ruggedness test circuit for resistive and inductive loads for iec 61000-4-5 standards ac mains r filtering unit rg model of the load rgene surge generator acst 2kv surge l r = , l = h, v = 2 kv r = 62 62 sur ge g
ACST1635-8FP application information doc id 023630 rev 1 9/13 figure 20. typical voltage and current waveforms across the ACST1635-8FP during iec 61000-4-5 standard test i v 0 0 v i peak peak = = v 290 a cl 1.2/50 s voltage surge 8/20 s current surge di/dt = 150 a/s
ordering information scheme ACST1635-8FP 10/13 doc id 023630 rev 1 3 ordering information scheme figure 21. ordering information scheme ac switch triac topology on-state rms current voltage package 16 = 16 a 8 = 800 v fp = to-220fpab triggering gate current 35 = 35 ma acst 16 35 - 8 fp
ACST1635-8FP package information doc id 023630 rev 1 11/13 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 5. 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
ordering information ACST1635-8FP 12/13 doc id 023630 rev 1 5 ordering information 6 revision history table 6. ordering information order code marking package weight base qty. packing mode ACST1635-8FP ACST1635-8FP to-220fpab 2.0 g 50 tube table 7. document revision history date revision changes 12-sep-2012 1 first issue.
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