1/7 avs12 ? january 2002 - ed: 3c automatic voltage switch (smps < 500w) avs1acp08 dip-8 n high efficiency and safety switching n uninsulated package : AVS12CB n v drm = 600 v n i t(rms) : 12a triac the avs12 kit is an automatic mains selector (110/220v ac) to be used in smps < 500 w. it is composed of 2 devices : n the controller is optimized for low consumption and high security triggering of the triac. when connected to v ss , the mode input activates an additional option . if the main power drops from 220v to 110v, the triac control remains locked to the 220v mode and avoids any high voltage spike when the voltage is restored to 220v. when connected to v dd , the mode input desactivates this option. n the triac is specially designed for this application. an optimization between sensitivity and dynamic parameters of the triac gate highly reduces the losses of supply resistor and allows excellent immunity against disturbances. description 1 2 3 4 v m mode v g 8 7 6 5 v dd v ss osc / in osc / out n.c. pin connection n 50/60hz full compatibility n integrated voltage regulator n triggering pulse train of the triac n parasitic filter n low power consumption controller a2 a2 a1 g AVS12CB to-220ab
avs12 2/7 symbol parameter value unit min. max. v ss supply voltage -12 0.5 v v i /v o i / o voltage v ss -0.5 0.5 v i i /i o i / o current -40 +40 ma tstg storage temperature -60 +150 c toper operating temperature code ''c'' 0 +70 c absolute maximum ratings controller avs1acp08 q q cp s cp mode a2 a1 osc/in osc/out zero crossing detector oscillator supply peak voltage detector reset parasitic filter mains mode controller triggering time controller avs1acp08 AVS12CB block diagram symbol parameter value unit v drm repetitive peak off-state voltage (2) 600 v i t(rms) rms on-state current (360 conduction angle) t c = 70c 12 a i tsm non repetitive surge peak on-state current ( t j initial = 25c ) t = 8.3ms t = 10ms 105 100 a i 2 ti 2 t value t = 10ms 50 a 2 s di / dt critical rate of rise of on-state current (1) repetitive f = 50hz 20 a/s non repetitive 100 dv/dt * linear slope up to 0.67 v drm gate open tj = 110c 50 v/s t stg t j storage temperature junction temperature range - 40 + 150 0 + 125 c (1) gate supply : i g = 100ma C di/dt = 1a / m s * for either polarity of electrode a2 voltage with reference to electrode a1 (2) t j = 110c triac AVS12CB t j = +25c (unless otherwise specified)
avs12 3/7 symbol parameter value unit rth (j-a) junction to ambient 60 c/w rth (j-c) dc junction to case for dc 3 c/w rth (j-c) ac junction to case for 360 conduction angle (f = 50hz) 2.3 c/w thermal resistance triac AVS12CB symbol parameter value unit min. max. v gd v d =v drm rl = 3.3k w pulse duration > 20s t j = 110c 0.2 v v tm *i tm = 17a t p = 10ms t j = 25c 1.75 v i drm *v drm rated gate open t j = 25c 10 m a t j = 110c 500 * for either polarity of electrode a 2 voltage with reference to electrode a 1 dc general electrical characteristics triac AVS12CB fig. 1: maximum rms power dissipation versus rms on-state current (f = 60hz). (curves are cut off by (di/dt)c limitation) fig. 2: correlation between maximum mean power dissipation and maximum allowable tem- perature (tamb and tcase) for different thermal resistances heatsink + contact.
avs12 4/7 fig. 3 : non repetitive surge peak on-state cur- rent for a sinusoidal pulse with width: t 10ms, and corresponding value of i 2 t. fig. 4: on-state characteristics (maximum values). symbol parameter value unit min. typ. max. v ss (pin 1) (vreg) shunt regulator -10 -9 -8 v i ss (pin 1) (vreg) (@ v ss = 9v) supply current 0.4 30 ma i ss (pin 1) (@ triac gate non connected) quiescent current 0.7 ma f (pin 3) (@ r = 91k w ) (c = 100pf) oscillator frequency 42 44 46 khz v m (pin 8) vth (3) peak voltage of detection high-threshold 4.08 4.25 4.42 v v m (pin 8) vh (3) peak voltage of detection hysteresis 0.370 0.4 0.420 v (1) v m (pin 8) vth (3) zero-crossing detection high-threshold 95 110 125 mv v m (pin 8) vh (3) zero-crossing detection hysteresis 27 50 80 mv (2) vrazht (4) power-on-reset activation threshold vreg x 0.89 v (2) vrazlt (4) power-down-reset activation threshold 3 6.5 v mode (pin 7) v il (4) v ih (4) 0.7 vreg 0.3 vreg v note: (1) : this value gives a typical noise immunity on the zero-crossing detectionof 110mv x 1018/18 = 6.20v on the main supply (2) : see following diagram (3) : voltage referred to v ss (4) : voltage referred to v dd dc general electrical characteristics (continued) controller avs1acp08 toper = 25c (unless otherwise specified)
avs12 5/7 undetermined power-on reset normal operation power-off reset undetermined 0v -2.7v vrazlt vreg = vss - vdd vrazht -2.7v 0v power-on and power-off reset behaviour option 7 5 4 ntc ntc 110 v or 220v g 1 n 4007 r1 1m w 1 % 8 3 21 a 1 a 2 v v dd ss v dd v g v m 91k 1 % w 100pf 5 % v ss 2 x 9.1k w 1w r2 18k w 1 % 390 w AVS12CB avs1acp08 33f 16v avs12 typical application
avs12 6/7 package mechanical data dip-8 plastic (controller) 8 1 5 4 e d f b1 b e3 e z b b1 i l a1 ref. dimensions millimetres inches min. typ. max. min. typ. max. a1 0.70 0.027 b 1.39 1.65 0.055 0.065 b1 0.91 1.04 0.036 0.041 b 0.5 0.020 b1 0.38 0.50 0.015 0.020 d 9.80 0.385 e 8.8 0.346 e 2.54 0.100 e3 7.62 0.300 f 7.1 0.280 i 4.8 0.189 l 3.3 0.130 z 0.44 1.60 0.017 0.063 avs12 avs 1a c p08 avs 12 c b automatic voltage switch identification operating temperature c = 0/70c package: dip-8 automatic voltage switch identification operating temperature c = 0/70c package b: to-220ab controller triac ordering information
avs12 7/7 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 ap- proval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics ? 2002 stmicroelectronics - printed in italy - all rights reserved. stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany hong kong - india - israel - italy - japan - malaysia - malta - morocco - singapore spain - sweden - switzerland - united kingdom - united states. http://www.st.com package mechanical data to-220ab (plastic) (triac) m b l4 c b2 a2 l2 c2 l3 b1 a1 a f l i e c1 ref. dimensions millimeters inches min. typ. max. min. typ. max. a 15.20 15.90 0.598 0.625 a1 3.75 0.147 a2 13.00 14.00 0.511 0.551 b 10.00 10.40 0.393 0.409 b1 0.61 0.88 0.024 0.034 b2 1.23 1.32 0.048 0.051 c 4.40 4.60 0.173 0.181 c1 0.49 0.70 0.019 0.027 c2 2.40 2.72 0.094 0.107 e 2.40 2.70 0.094 0.106 f 6.20 6.60 0.244 0.259 i 3.75 3.85 0.147 0.151 i4 15.80 16.40 16.80 0.622 0.646 0.661 l 2.65 2.95 0.104 0.116 l2 1.14 1.70 0.044 0.066 l3 1.14 1.70 0.044 0.066 m 2.60 0.102 part number marking weight base qty packing mode AVS12CB AVS12CB 2.3 g 1000 tube avs1acp08 avs1acp08 0.6 g 2000 tube other information n cooling method: c n recommended torque value: 0.8 m.n n maximum torque value: 1 m.n
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