discontinued product for reference only data sheet 28101.1 str-s6411 and str-s6411f these devices are specifically designed to meet the requirements for increased integration and reliability in off-line flyback (str-s6411) and forward (str-s6411f) converters operating in a fixed-frequency pwm mode. each device incorporates the primary control and drive circuits with an avalanche-rated high-voltage power mosfet. crucial system parameters such as switching frequency and maximum duty cycle are fixed during manufacture. the str-s6411 and str-s6411f differ only in their maximum duty cycle. control circuit decoupling and layout are optimized within each device. cycle-by-cycle and average-current limiting, soft start, under- voltage lockout with hysteresis, and thermal shutdown protect the device during all normal and overload conditions. the performance and reliability of these devices, and their variable-frequency counterparts, has been proven in substantial volume production. the requirements of high dielectric isolation and low transient thermal impedance and steady-state thermal resistance are satisfied in an over-molded, 9-pin single in-line power package. features n pwm flyback conversion or forward conversion n output power to 250 w n pulse-by-pulse current limiting n fixed-frequency 100 khz pwm n avalanche-rated power mosfet switch n soft start n internal under-voltage lockout and thermal shutdown n low external component count n over-molded sip with isolated heat spreader always order by complete part number: str-s6411 or str-s6411f . absolute maximum ratings supply voltage, v in ............................ 35 v drain-source voltage, v ds ............... 800 v drain current, i d continuous ..................................... 5 a single pulse, t w 1 ms .................. 20 a avalanche energy, e a single pulse ............................... 400 mj gate-source voltage, v gs ................ 20 v gate-drive current range, i g ................................. -0.7 a to +1.5 a over-current protection voltage range, v ocp ............................. -0.3 v to +4.0 v insulation rms voltage, v wm(rms) ..................................... 2000 v package power dissipation, p d ........................................ see graph fet channel temperature, t j ...... +150 c internal frame temperature, t f ... +125 c operating temperature range, t a ............................... -20 c to +125 c storage temperature range, t stg ............................. -30 c to +125 c + source drain uvlo signal ground v in over-current protection dwg. pk-003 soft start + gate fdbk pwm power ground latch ref. 1 2 3 4 5 6 7 8 9 osc. off-line switching regulators C with power mosfet output ?
str-s6411 and str-s6411f off-line switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 ? functional block diagram allowable package power dissipation maximum safe operating area osc. s q source drain latch 1 2 uvlo signal ground 4 v in over-current protection r ton ref. 7 6 8 dwg. fk-003 soft start 5 0.2 v + gate 3 fdbk 9 pwm power ground + r toff r 60 40 20 20 60 100 3.2 w 140 limited by frame temp. = +125 c max. recommended max. frame temp. = +100 c free air 62 w 0 temperature in c allowable package power dissipation in watts mounting surface temperature dwg. gk-003 100 10 1.0 0.1 drain-to-source voltage in volts drain current in amperes dwg. gk-004-1 0.3 3.0 30 3.0 10 30 100 300 no heat sink natural cooling t = +25 c a t = 10 ms single pulse w t = 1 ms single pulse w 1000 t = 0.1 ms single pulse w limited by v max ds limited by r ds(on) copyright ? 1994 allegro microsystems, inc.
allowable avalanche energy electrical characteristics at t a = +25 c, v in = 17 v, voltage measurements are referenced to signal ground (pin 8) (unless otherwise noted). limits characteristic symbol test conditions min. typ. max. units on-state voltage v int turn-on, increasing v in 14.4 16 17.6 v under-voltage lockout v inq turn-off, decreasing v in 8.4 9.4 10.4 v fet leakage current i dss v ds = 800 v C C 1.2 ma fet on resistance r ds(on) v gs = 10 v, i d = 3 a C 1.8 2.2 w forward transconductance g fs v gs = 10 v, i d = 3 a 3.0 C C s fet input capacitance c iss v ds =10 v, v gs =0 v, f=1 mhz C 1800 C pf propagation delay time t phl turn-on, 10% v gs to 10% v ds C60C ns t plh turn-off, 90% v gs to 90% v ds C 140 C ns oscillator frequency f osc 93 100 107 khz maximum on time t on str-s6411 5.1 5.7 6.5 m s str-s6411f 3.8 4.5 5.2 m s over-current threshold v ocp(th) 160 200 240 mv ocp current i ocp -250 -400 -550 m a feedback current i fdbk C -1.8 C ma soft start threshold voltage v ss(th) C C 0.4 v soft start current i ss v ss = 0 v C -100 C m a power ground current i pg t w = 200 ns C -1.0 -1.5 a supply current i in(on) operating C 23 C ma i in(off) start up, v in = 12 v C C 500 m a insulation rms voltage v wm(rms) all terminals simultaneous reference 2000 C C v metal plate against backside thermal resistance r q jm fet channel to mounting surface C 2.0 C c/w notes: negative current is defined as coming out of (sourcing) the specified device terminal. typical data is for design information only. 600 400 200 0 60 100 140 100 starting channel temperature in c allowable avalanche energy in mj dwg. gk-009-1 300 500 0 20 40 80 120 160 single pulse drain current = 5 a supply voltage = 50 v str-s6411 and str-s6411f off-line switching regulators
str-s6411 and str-s6411f off-line switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 ? typical characteristics 160 120 80 -20 40 80 120 60 ambient temperature in c oscillator frequency in khz dwg. gk-005 100 140 40 0 20 60 100 140 35 25 15 0 15 25 35 10 input voltage in volts operating supply current in ma dwg. gk-006 20 30 5 510 203040 t = +100 c a t = +25 c a t = -20 c a v int v inq 0 300 200 100 -20 40 80 120 50 ambient temperature in c over-current threshold voltage in mv dwg. gk-007 150 250 0 0 20 60 100 140
typical pwm flyback conversion using str-s6411 warning: lethal potentials are present. see text. typical pwm forward conversion using str-s6411f warning: lethal potentials are present. see text. nc 1 2 4 7 8 5 3 9 6 + voltage sense full-bridge rectifier ac input 220 v/240 v + output ?output + + + dwg. ek-003-2 str-s6411 nc 1 2 4 7 8 5 3 9 6 + voltage sense full-bridge rectifier ac input 220 v/240 v + output ?output + + + dwg. ek-003-3 str-s6411f str-s6411 and str-s6411f off-line switching regulators
str-s6411 and str-s6411f off-line switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 ? note: exact body and lead configuration at vendors option within limits shown. applications information warning these devices are designed to be operated at lethal voltages and energy levels. circuit designs that embody these components must conform with applicable safety requirements. precautions must be taken to prevent accidental contact with power-line potentials. do not connect grounded test equipment. the use of an isolation transformer is recommended during circuit development and breadboarding. the power mosfet outputs of these devices are similar to the international rectifier type irfpe40. these devices feature an excellent combination of fast switching, ruggedized device design, low on-resistance, and cost effectiveness. recommended mounting hardware torque: 4.34 - 5.79 lbf?ft (6 C 8 kg?cm or 0.588 C 0.784 nm). recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease: dow corning 340, or equivalent dimensions in inches (for reference only) 0.276 0.016 dwg. mk-003-9 in 0.953 0.008 0.610 0.008 0.118 0.130 0.008 1.49 0.012 0.016 0.100 0.004 0.709 0.008 0.216 0.008 0.216 0.130 0.004 0.026 +0.008 ?.004 0.177 0.028 package center lead center 1 9 0.033 +0.008 ?.004 t ref. m
dimensions in millimeters (controlling dimensions) note: exact body and lead configuration at vendors option within limits shown. dwg. mk-003-9 mm 24.2 0.2 15.5 0.2 3.0 3.3 0.2 23.0 0.3 0.4 2.54 0.1 18.0 0.2 5.5 0.2 7.0 0.4 5.5 3.3 0.1 0.65 +0.2 ?.1 4.5 0.7 package center lead center 1 9 0.85 +0.2 ?.1 t ref m the products described here are manufactured in japan by sanken electric co., ltd. for sale by allegro microsystems, inc. sanken electric co., ltd. and allegro microsystems, inc. reserve the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the design of their products. the information included herein is believed to be accurate and reliable. however, sanken electric co., ltd. and allegro microsystems, inc. assume no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. str-s6411 and str-s6411f off-line switching regulators
str-s6411 and str-s6411f off-line switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 ? power conversion/power management selection guides switching regulator pmcms part number* application v i max p o power switch 3002m 5 v switching regulator and a 7.0-33 v e e 500 ma bipolar 9 v switching regulator? e 400 ma bipolar 3004m 5 v switching regulator and 7.0-33 v e e 500 ma bipolar dual 9 v switching regulator e 2 x 400 ma bipolar s5703 quasi-resonant flyback converter 110/120 v 140 w 500 v 6 a bipolar s5707 quasi-resonant flyback converter 85-265 v 90 w 850 v 6 a bipolar 220/240v 140 w s5708 quasi-resonant flyback converter 85-265 v 120 w 850 v 7.5 a bipolar 220/240 v 180 w f6624 quasi-resonant flyback converter 100/120 v 130 w 450 v 0.92 w mosfet f6626 quasi-resonant flyback converter 100/120 v 190 w 450 v 0.58 w mosfet f6628 quasi-resonant flyback converter 100/120 v 290 w 450 v 0.35 w mosfet f6652 quasi-resonant flyback converter 85-265 v 86 w 650 v 2.8 w mosfet f6653 quasi-resonant flyback converter 85-265 v 120 w 650 v 1.95 w mosfet f6654 quasi-resonant flyback converter 85-265 v 190 w 650 v 1.15 w mosfet f6656 quasi-resonant flyback converter 85-265 v 300 w 650 v 0.71 w mosfet f6672 quasi-resonant flyback converter 200/220 v 50 w 900 v 7.7 w mosfet f6674 quasi-resonant flyback converter 85-265 v 76 w 900 v 4.49 w mosfet f6676 quasi-resonant flyback converter 85-265 v 115 w 900 v 2.81 w mosfet s6703 quasi-resonant flyback converter 110/120v 140 w 500 v 6 a bipolar s6704 quasi-resonant flyback converter 110/120 v 100 w 500 v 5 a bipolar s6707 quasi-resonant flyback converter 85-265 v 90 w 850 v 6 a bipolar 220/240 v 140 w s6708 quasi-resonant flyback converter 85-265 v 120 w 850 v 7.5 a bipolar 220/240 v 180 w s6709 quasi-resonant flyback converter 85-265 v 160 w 850 v 10 a bipolar 220/240 v 220 w 8033s 3.3 v switching regulator 5.5-28 v e e 3 a bipolar 8050s 5.0 v switching regulator 7.0-40 v e e 3 a bipolar 8090s 9.0 v switching regulator 12-40v e e 3 a bipolar 8120s 12 v switching regulator 15-40 v e e 3 a bipolar 8150s 15 v switching regulator 18-40 v e e 3 a bipolar * complete part number includes additional characters to indicate operating temperature range and/or package style. ? also includes linear regulator output for 15.7 v at 1.0 a. power conversion/power management selection guides ( continued )
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