discontinued product for reference only off-line switching regulator C with power mosfet output the STR-M6511 is specifically designed to meet the requirement for increased integration and reliability in off-line flyback converters operat- ing in the quasi-resonant ringing choke mode. the device incorporates the primary control and drive circuit with a discrete avalanche-rated power mosfet. crucial system parameters such as maximum on time and off time are fixed during manufacture. local control circuit decoupling and layout are optimized within the device. cycle-by-cycle current limiting, soft start, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect the devices during all normal and overload conditions. over-voltage protec- tion, thermal shutdown, or an external fault signal are latched. the dual requirements of dielectric isolation and low transient thermal impedance and steady-state thermal resistance are satisfied in an over-molded single-in-line power package. proven in substantial volumes, this device and its fixed-frequency counterparts represents a significant advance in off-line smps reliability growth and integration. a similar off-line switching regulator, with an output rating of 800 v at 10 a, is also available. features n quasi-resonant ringing choke converter n avalanche-rated power mosfet switch n pulse-by-pulse current limiting n latched over-voltage and thermal protection n maximum on time and off time set during manufacture n internal under-voltage lockout with hysteresis n over-molded sip with integral isolated heat spreader always order by complete part number: STR-M6511 . + source drain uvlo common v in over-current protection dwg. pk-002 fault-latch trigger & soft start fdbk fault latch ref. 1 2 3 4 5 6 7 osc. rs fault absolute maximum ratings supply voltage, v in ........................... 35 v drain-source voltage, v ds .............. 450 v continuous drain current, i d ............. 11 a 1 ms single-pulse drain current, i dm ................................................. 40 a single-pulse avalanche energy, e a .............................................. 400 mj soft-start/fault-latch trigger voltage, v ss/fl ............................................. 10 v feedback input current, i fdbk ........ 20 ma over-current protection voltage, v ocp ............................................. 3.5 v insulation voltage,v wm(rms) ........... 2000 v package power diss., p d ........ see graph fet junction 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 ............................. -40 c to +125 c data sheet 28102 STR-M6511 ?
STR-M6511 off-line switching regulator 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 ? r toff osc. tsd over-volt. protect common 3 r sq v in fdbk over-current protection source drain r ton ref. fault latch 5 1 2 4 6 dwg. fk-002 trigger 0.01 m f 3.3 k w 1 k w 6.8 k w fault-latch trigger & soft start 7 0.75 v + uvlo 1000 pf 60 40 20 20 60 100 2.8 w 140 limited by frame temp. = +125 c max. recommended max. frame temp. = +100 c free air 54 w 0 temperature in c allowable package power dissipation in watts mounting surface temperature dwg. gk-003-1 limited by r ds(on) 100 10 1.0 0.1 drain-to-source voltage in volts drain current in amperes dwg. gk-004-2 0.3 3.0 30 3.0 10 30 100 300 limited by v max ds no heat sink natural cooling t = +25 c a t = 10 ms single pulse w t = 1 ms single pulse w t = 0.1 ms single pulse w functional block diagram allowable package power dissipation maximum safe operating area copyright ? 1994 allegro microsystems, inc.
allowable avalanche energy electrical characteristics at t a = +25 c, v in = 18 v, voltage measurements are referenced to common (pin 3) (unless otherwise noted). limits characteristic symbol test conditions min. typ. max. units on-state voltage v int turn-on, increasing v in 14.4 C 17.6 v under-voltage lockout v inq turn-off, decreasing v in 9.0 C 11 v over-voltage threshold v ovp(th) 26 C 31 v fet leakage current i dss v ds = 450 v C C 300 m a fet on resistance r ds(on) v gs = 10 v, i d = 5 a C 0.45 0.55 w output fall time t f v dd = 200 v, i d = 5 a, 10% to 90% v ds C C 250 ns maximum on time t on 18 C 22 m s minimum off time t off 0.6 C 1.6 m s over-current threshold v ocp(th) 700 C 800 mv feedback threshold volt. v fdbk(th) C 750 C mv soft-start current i ss v ss = 0 v -2.2 C -3.4 ma fault-latch threshold volt. v fl(th) 6.9 C 7.7 v fault-latch holding current i inh v in reduced from 31 v to 8.5 v C 340 400 m a fault-latch reset voltage v inq i in <20 m a, v in reduced from 31 v 6.5 C 8.5 v insulation rms voltage v wm(rms) all terminals simultaneous reference 2000 C C v metal plate against backside supply current i in(on) operating 18 C 28 ma i in(off) start up, v in 14 v C C 100 m a thermal shutdown t j 125 150 C c thermal resistance r q jm fet junction 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-M6511 off-line switching regulator
STR-M6511 off-line switching regulator 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 ? + voltage sense full-bridge rectifier ac input 100 v/120 v + output ?output + + + dwg. ek-002 3 r sq 5 1 2 4 6 7 + 5 STR-M6511 h typical application warning: lethal potentials are present. see text. 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 irfp448. these devices feature an excellent combination of fast switching, ruggedized device design, low on-resistance, and cost effectiveness. recommended mounting hardware torque: 4.34 C 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
0.276 0.02 dwg. mk-003-7 in 0.780 0.008 0.157 0.008 0.130 0.008 0.906 0.012 0.100 0.004 0.689 0.008 0.216 0.008 0.216 0.128 0.004 0.026 +0.008 ?.004 0.177 0.028 1 7 0.033 +0.008 ?.004 t ref m dimensions in inches (for reference only) note: exact body and lead configuration at vendors option within limits shown. STR-M6511 off-line switching regulator
STR-M6511 off-line switching regulator 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 ? 7.0 0.5 dwg. mk-003-7 mm 19.8 0.2 4.0 0.2 3.3 0.2 23.0 0.3 2.54 0.1 17.5 0.2 5.5 0.2 5.5 3.25 0.1 0.65 +0.2 ?.1 4.5 0.7 1 7 0.85 +0.2 ?.1 t ref. m dimensions in millimeters (controlling dimensions) 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. note: exact body and lead configuration at vendors option within limits shown.
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