? 1/10 stil ac inrush current limiter 1 2 3 4 5 pentawatt hv2 stil04-p5 1 ta b 2 3 4 5 pentawatt STIL08-T5 november 2004 applications high power density switching power supply server and telecom power supplies high end tv displays portable equipment adaptators features replaces two diodes of the bridge in steady state dual unidirectional switches in a single package inrush current limitation circuit for off-line power supply designed for instantaneous response after ac line drop out or browning surge current capability as per iec61000-4-5 compliant with iec61000-3-2 benefits low consumption (i pt = 20ma) high noise immunity: (dv/dt> 1000v/s @ tj=125c) low reverse current losses integrated pilot driver of the power switches suitable where efficiency and space are critical table 1: order codes part number marking stil04-p5 stil04 STIL08-T5 stil08 tm: asd? is a trademark of stmicroelectronics. asd? table 2: pin out description pin out designation description position l ac line (switch1) 1 pt1 drive of power switch 1 2 out output 3 pt2 drive of power switch 2 4 n ac neutral (switch 2) 5 figure 1: block diagram figure 2: basic connection pt1 pt2 + out n driver l out pt2 main converter vout auxil. supply ac in inrush resistor + n l - + pt1 rev. 4
stil 2/10 functional description (see figures 3 and 4) the stil is connected in parallel with the diode bridge and the inrush power resistor. during start up, the two unidirectional asd? power switches of the stil are open. the inrush current flows through the diodes of the bridge and external inrush power resistor. when the pfc reaches steady state, the auxiliary power supply coupled with the main transformer, supplies the energy required to feed the driver of the two power switches of the stil. in steady state, the two dc ground connected diodes of the bridge rectifier and the two unidirectional switches of the stil connected to dc+ rectify the ac line current. powerfail feature when the stil is used with a pfc boost converter, the inrush current circuit is active after an ac line drop- out (see figure 8). in that configuration, since the ac line disappears, the pfc controller and the auxiliary power supply of the stil turns off. the two switches of the stil are open. the output bulk capacitor cb is discharging and it is providing the energy to the main converter. when the ac line recovers, the two switches remain opened and recharging inrush current of the capacitor cb is deviated and limited through the resistor ri. when the capacitor had finished charging, the pfc turns on again and the two switches of the stil switch on. more details on the design and operation of the driver circuit of figure 5 can be found in the application note ?an1600 - stil: inrush current limitation device for off-line power converter? . figure 3: function description at turn-on figure 4: function description in steady state i + pt1 auxiliary power inrush resistor i i ac in pt2 driver out - + bridge driver i inrush resistor auxiliary power pt2 i out ac in + - + bridge pt1 i
stil 3/10 table 3: absolute maximum ratings (limiting value) table 4: thermal parameters symbol parameter value unit stil04 stil08 v dout repetitive forward off-state voltage, between terminals l or n and out terminal tj = 0 to 150c 700 v v rout repetitive reverse off-state voltage, between out terminals and terminals l or n tj = 0 to 150c 700 800 v i out(av) average on state current at the out terminal (180 conduction angle for the internal power switches) tj = 150c 4 8 a i out(rms) rms on state current at the out terminal (180 conduction angle for the internal power switches) tj = 150c 4.4 8.9 a i tsm non repetitive surge peak on-state current for each ac input terminals l and n (tj initial = 25c) tp = 10ms sinusoidal 65 100 a i 2 ti 2 t value - rating for fusing tp = 10ms 21 50 a 2 s di out /dt critical rate of rise of on state current i pt1 + i pt2 = 20ma tj = 0 to 150c 100 a/s t stg storage temperature range -40 to +150 c t j junction temperature range 0 to +150 c symbol parameter value unit rth (j-c) junction to case 2 c/w rth (j-a) junction to ambient 60
stil 4/10 table 5: electrical characteristics symbol parameter test conditions values unit stil04 stil08 min. typ. max. min. typ. max. i pt1 + i pt2 driver trigger current v dout = 12v (dc) r l = 30 ? t j = 0c 12 20 12 20 ma t j = 25c 10 10 v d(pt1) v d(pt2) direct driver trigger voltage v dout = 12v (dc) r l = 30 ? t j = 0c 0.6 0.85 1 0.8 1 v t j = 25c 0.8 0.95 0.75 0.9 t j = 150c 0.2 0.45 0.2 0.4 v r(pt1) v r(pt2) maximum repetitive reverse driver voltage t j = 25c 88v dv dout /dt dynamic voltage rising linear slope up to v dout = 470v t j = 150c 500 500 v/s t j = 125c 1000 1000 i rout (off)* max reverse current without driver current v rout = 800v i pt1 = i pt2 = open t j = 25c 55 a t j = 150c 300 300 i rout (on)** max reverse current with driver current v rout = 400v i pt1 = i pt2 = 10ma t j = 150c 300 300 a v t0 threshold direct voltage for one power switch i out(av) = 4a t j = 150c 0.75 0.9 v i out(av) = 8a 0.75 0.9 r d dynamic resistance for one power switch i out(av) = 4a t j = 150c 55 80 m ? i out(av) = 8a 30 40 v f *** forward voltage drop for one power switch i in = 4a t j = 150c 1.1 1.4 v i in = 8a 11.2 pulse test: * tp = 300 ms, < 2% ** tp = 300 ms, < 2% *** tp = 380 s, < 2%
stil 5/10 power losses calculation when the input current is sinusoidal, the conducted power losses can be calculated by using the following formula: if the output average current is 8amps, v t0 and r d of the electrical characteristics table can be used. for different output current please refer to the application note an1600 that provides guidelines to estimate the correct values of v t0 and r d . lightning surge immunity (iec61000-4-5) during lightning surge transient voltage across the ac line, over current and over voltage stress are ap- plied on all the components of the power supply. the stil can sustain a maximum peak surge current up to i peak (i peak = 500a for stil04 and i peak = 1000a for stil08) as defined by the combine waveform generator (8/20s waveform as shown in figures 5, 6 and 7). special recommendations for the lightning surge immunity: 1 - check that the i peak in the stil stays below the limit specified above. 2 - check that no over voltages are applied on the stil and the bridge diode. 3 - in order to reduce the dynamic current stress (di out /dt) through the structure of the stil, it is recom- mended to connect a differential mode choke coil in front of the stil and the bridge diode. more details and design guidelines are provided in the application note ?an1600 - stil: inrush current limitation device for off-line power converter?. figure 5: surge test condition p tot v t 0 i out av () r d i ( out av () ) 2 8 ------------------------------------ - ? + ? = iec61000-4-5 stil pt 1 pt 2 i out v out coupling network + surge generator (l evel 1, 2, 3 or 4) 5vdc 0 + out n driver l figure 6: surge test characterisation for stil04 figure 7: surge test characterisation for stil08 1 1 5 s 80a/div i out ipeak=500a 0 amps 8 s 20 s iec61000-4-5 ipeak 1 1 5 s 160a/div i out ipeak=1000a 0 amps iec61000-4-5 ipeak 8 s 20 s
stil 6/10 figure 8: basic connection with a pfc boost preregulator figure 9: non repetitive surge peak on-state current (sinusoidal pulse) and corresponding value of i 2 t (tj initial = 25c) figure 10: non repetitive surge peak on-state current (sinusoidal pulse) and corresponding value of i 2 t (tj initial = 150c) figure 11: relative variation of driver trigger current versus junction temperature (typical values) figure 12: relative variation of direct pilot trigger voltage versus junction temperature (typical values) + l out n pt1 pt2 cb vout c2 - + r c1 pfc control auxiliary windows (see application note ) an1692 r1 ac in inrush resistor r2 driver c0 1 10 100 1000 0.01 0.10 1.00 10.00 i (a), i2t(a2s) tsm t initial=25c j i tsm i2t t (ms) p stil04 stil08 1 10 100 1000 0.01 0.10 1.00 10.00 t initial=150c j i tsm i2t stil04 stil08 i (a), i2t(a2s) tsm t (ms) p 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 0 25 50 75 100 125 150 t (c) j i or i [t ] / i or i [t = 25c] pt1 pt2 j pt1 pt2 j 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 0 25 50 75 100 125 150 v or v [t ] / = 25c] dpt1 dpt2 j vorv[t dpt1 dpt2 j stil04 stil08 t (c) j
stil 7/10 figure 13: relative variation of thermal impedance junction to case versus pulse duration figure 14: reverse current versus junction temperature without driver current (typical values) figure 15: reverse current versus junction temperature with driver current (typical values) (stil04) figure 16: reverse current versus junction temperature with driver current (typical values) (stil08) figure 17: forward voltage drop for one power switch versus junction temperature (typical values) figure 18: peak forward voltage drop versus peak forward output current for one power switch (typical values) (stil04) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.e-4 1.e-3 1.e-2 1.e-1 1.e+0 1.e+1 t (s) p k = [z /r ] th(j-c) th(j-c) stil04 stil08 1.e-3 1.e-2 1.e-1 1.e+0 1.e+1 1.e+2 0 25 50 75 100 125 150 i off(a) r(out) p & p open t1 t2 v =800v r(out) p & p open t1 t2 v =400v r(out) stil04 stil08 t (c) j 1.0 10.0 100.0 0 25 50 75 100 125 150 i on(a) r(out) i = i =10ma pt1 pt2 v =400v r(out) stil04 t (c) j 140 160 180 200 220 0 25 50 75 100 125 150 i on(a) r(out) i = i =10ma pt1 pt2 v =400v r(out) stil08 t (c) j 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 1.12 1.14 1.16 1.18 1.20 0 25 50 75 100 125 150 v (v) f i =6.3a out i =8a out stil04 stil08 t (c) j 0 1 2 3 4 5 6 7 8 9 10 11 12 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 i (a) out v (v) f t =25c j t =150c j stil04
stil 8/10 figure 21: pentawatt hv2 package mechanical data figure 19: peak forward voltage drop versus peak forward output current for one power switch (typical values) (stil08) figure 20: relative variation of dv/dt immunity versus junction temperature (typical values) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 stil08 t =25c j t =150c j i (a) out v (v) f 0 2 4 6 8 10 12 14 16 18 20 25 50 75 100 125 150 dv [t ] / =150c] d(out) j dv [t d(out) j v =470v dout t (c) j a c d l3 e l7 l6 h2 g2 g f ref. dimensions millimeters inches min. max. min. max. a 4.19 7.70 0.165 0.185 c 1.14 1.40 0.044 0.055 d 2.5 2.72 0.098 0.107 e 0.38 0.51 0.015 0.020 f 0.66 0.82 0.026 0.032 g 2.54 typ. 0.10 typ. g2 7.62 typ. 0.30 typ. h2 10.04 10.29 0.395 0.405 l3 23.5 typ. 0.925 typ. l6 9.90 10.16 0.389 0.400 l7 1.52 typ. 0.059 typ.
stil 9/10 figure 22: pentawatt terminals package mechanical data a h2 c d e f g g2 diam l3 l6 l8 l7 table 6: ordering information epoxy meets ul94, v0 cooling method: by conduction (c) recommended torque value: 0.8 m.n. maximum torque value: 1.0 m.n. part number marking package weight base qty delivery mode stil04-p5 stil04 pentawatt hv2 1.9 g 50 tube STIL08-T5 stil08 pentawatt 3 g 50 tube ref. dimensions millimeters inches min. max. min. max. a 4.19 7.70 0.165 0.303 c 1.14 1.40 0.045 0.055 d 2.5 2.72 0.098 0.107 e 0.38 0.51 0.015 0.020 f 0.66 0.82 0.026 0.032 g 2.54 typ. 0.100 typ. g2 7.62 typ. 0.300 typ. h2 10.03 10.29 0.394 0405 l3 28.68 typ. 1.129 typ. l6 8.23 8.49 0.324 0.334 l7 6.15 6.25 0.242 0.246 l8 2.74 typ. 0.108 typ. diam. 3.71 3.96 0.146 0.156 table 7: revision history date revision description of changes october-2002 3a last update. 23-nov-2004 4 STIL08-T5 added
stil 10/10 information furnished is believed to be accurate and reliable. however, stmicroelectronics assu mes no responsibility for the co nsequences 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 publicati on are subject to change without notice. this publication supersedes and replac es all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered tr ademark of stmicroelectronics. all other names are the property of their respective owners ? 2004 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com
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