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sanken power devices from allegro microsystems all performance characteristics given are typical values for circuit or system baseline design only and are at the nominal operating voltage and . d e t a t s e s i w r e h t o s s e l n u , c 5 2 + f o e r u t a r e p m e t t n e i b m a n a universal-input 13 w 100 khz flyback switching regulators STR-A6259H 100 khz pwm with 5% frequency jittering for emi noise filtering cost reduction rugged 650 v avalanche-rated mosfe t : ? simplified su r ge absorption ? no v dss derating required low r ds(on) : 6 maximum auto-burst mode for stand-by operation or light loads; less transformer audible noise built-in leading edge blanking soft start and low start-up current; start-up circuit disabled in operation auto-burst stand-by (intermittent operation) input power <0.1 w at no load built-in constant-voltage/constant current (cv/cc) multiple protections: ? pulse-by-pulse overcurrent protection (ocp) ? overload protection (olp) with auto restart ? latching overvoltage protection (ovp) ? undervoltage lockout (uvlo) with hysteresis ? latching thermal shutdown (tsd) the STR-A6259H is a 100 khz pwm topology (with 5% freq- uency jittering for minimum emi) regulator specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. it incorporates a primary control and drive circuit with an avalanche-rated power mosfe t . covering the power range from below 17 watts for a 230 v ac input, or to 13 watts for a universal (85 to 264 v ac) input, this device can be used in a wide range of applications, from dvd players and vcr player/recorders to ac adapters for cellular phones and digital cameras. an auto-burst standby func- tion reduces power consumption at light load, while multiple protections, including the avalanche-ene r gy guaranteed mosfe t , provide high reliability of system design. cycle-by-cycle current limiting, undervoltage lockout with hysteresis, overvoltage protection, and thermal shutdown protect the power supply during the normal overload and fault conditions. overvoltage protection and thermal shutdown are latched after a short dela y . the latch may be reset by cycling the input suppl y . low start-up current and a low-power standby mode selected from the secondary circuit completes a comprehensive suite of features. it is provided in an 8-pin mini-di p plastic package with pin 6 removed. the leadframe plating is pure sb, and the package complies with rohs. fe a tures and benefits STR-A6259H always order by complete part numbe r , e.g.: approximate scale 1:1 package dip-8 switching regulators datasheet 28103.44-6b
STR-A6259H universal input 13 w 100 khz flyback switching regulators 2 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 functional block diagram and terminal assignments drive 8 1 5 d vcc 2 leb s/ocp tsd pwm osc internal bias fm/ss 32v 3 gnd fb/cc /olp 4 r sq ocp cv/cc istartup =1.1ma frequency modulation soft start uvlo reset olp 125c ovp feedback control r s q delay 7.2v 10 s 13.4v/10v 7 d number name description functions 1 s/ocp source/ocp terminal mosfet source/overcurrent protection 2 fm/ss fm/soft start terminal capacitor connection terminal for frequency jitter and soft start. 3 gnd ground terminal ground 4 fb /cc/olp fb/cc/olp terminal input of constant voltage control signal / constant current operation control signal / over load protection signal 5 vcc power supply terminal input of power supply for control circuit 7 d drain terminals mosfet drain / input of startup current 8
STR-A6259H universal input 13 w 100 khz flyback switching regulators 3 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 absolute maximum ratings at t a = 25c characteristic symbol terminal note max. unit drain current 1 i dpeak 8-1 single pulse 1.8 a maximum switching current i dmax 8-1 v s/ocp = 0.83 v with reference to gnd, t a = ?20 to 125c 1.8 a single pulse avalanche energy 2 e as 8-1 single pulse 24 mj v dd = 99 v, l = 20 mh, i l = 1.8 a 24 mj s/ocp terminal voltage v ocp 1-3 ?0.3 to 6 v controller (mic) input voltage vcc 5-3 36 v fb/cc/olp terminal voltage v fb 4-3 ?0.3 to 11 v fm terminal voltage v fm 2-3 ?0.3 to 6 v mosfet power dissipation 3,4 p d1 8-1 1.35 w controller (mic) power dissipation 5 p d2 5-3 for vccicc 0.15 w operating internal frame temperature 6 t f refer to t op ?20 to 125 c operating ambient temperature t op ?20 to 125 c storage temperature t stg ?40 to 125 c channel junction temperature t j 150 c 1 refer to figure 1 2 refer to figure 3 3 refer to figure 5 4 mounted on 15 x 15 mm printed circuit board 5 refer to figure 6 6 measured at the root of terminal 3 temperature, t f (c) safe operating area temperature derating coefficient (%) 0 20 40 60 80 100 0 25 50 75 100 125 150 drain-to-source voltage, v ds (v) drain current, i d (a) 1.00 0.10 0.01 10.00 10 100 1000 1 1 ms 0.1 ms current limit due to r ds(on) refer to figure 1 for mosfet soa temperature derating coefficient figure 1 ? mosfet safe operating area derating curve figure 2 ? mosfet safe operating area drain current versus voltage
STR-A6259H universal input 13 w 100 khz flyback switching regulators 4 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 channel junction temperature, t j (c) e as derating coefficient (%) 0 20 40 60 80 100 25 50 75 100 125 150 t(s) transient thermal resistance, r jc (c/w) 1.00 0.10 0.01 10.00 100 10 10m 1m 100m 1 ambient temperature, t a (c) power dissipation, p d1 (w) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 20 40 60 80 100 120 140 160 p d1 = 1.35 w at t a ??& internal frame temperature, t f (c) power dissipation, p d2 (w) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 20 40 60 80 100 120 140 160 p d2 = 0.15 w at t a ??& figure 6 ? mic power dissipation versus temperature figure 3 ? mosfet avalanche energy derating curve figure 4 ? transient thermal resistance figure 5 ? mosfet power dissipation versus temperature
STR-A6259H universal input 13 w 100 khz flyback switching regulators 5 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 electrical characteristics for controller (mic), valid at t a = 25c, v cc = 18 v, unless otherwise specified characteristic symbol terminal test conditions min. typ. max. unit operation start voltage v cc(on) 5-3 (power supply voltage at which device starts operating) measurement circuit 1, v cc = 0 though 13.1 to 16.1 v 12.9 14.3 15.7 v operation stop voltage v cc(off) 5-3 (power supply voltage at which device stops operating) measurement circuit 1, v cc = 16.1 through 9 to 11 v 91011v circuit current in operation i cc(on) 5-3 (inflow current into power supply terminal, in operation) measurement circuit 1 ??4ma initialization circuit current i cc(off) 5-3 (inflow current into power supply terminal, while subject to uvlo prior to operation) measurement circuit 1, v cc = 13 v ??25 a center switching frequency f osc(av) 8-3 (center oscillation frequency of d terminal) measurement circuit 2 90 100 110 khz frequency jitter deviation f 8-3 maximum frequency ? minimum frequency measurement circuit 2 6 10 14 khz maximum duty cycle d max 8-3 (maximum width of the low portion of the d terminal waveform) measurement circuit 2 70 76 82 % fm high voltage v hfm 2-3 (v fm at which the fm current is changed from 10 a to ?10 a) measurement circuit 2 4.0 4.5 5.0 v fm low voltage v lfm 2-3 (v fm at which the fm current is changed from ?10 a to 10 a) measurement circuit 2 3.2 3.6 4.0 v fm outflow current i sorcfm 2-3 outflow current from fm terminal at v fm = v lfm (3.7 v typ.) measurement circuit 2 7.7 11 15.4 a fm inflow current i sinkfm 2-3 inflow current into fm terminal at v fm = v hfm (4.4 v typ.) measurement circuit 2 ?15.4 ?11 ?7.7 a ocp threshold voltage v ocp(th) 1-3 (the drain current at which the low portion of the d terminal waveform becomes shorter than the high portion, with v ocp increasing) measurement circuit 3 0.67 0.74 0.81 v leading edge blanking time t wb 8-3 (the low portion of the d terminal waveform with v ocp = 1 v) measurement circuit 3 240 350 460 ns burst threshold voltage v burst(th) 4-3 (fb/cc/olp terminal voltage at which d terminal waveform oscillation stops due to v fb decreasing from 5 v) measurement circuit 4 1.0 1.12 1.24 v olp threshold voltage v olp(th) 4-3 (fb/cc/olp terminal voltage at which d terminal waveform oscillation stops due to v fb increasing from 5 v) measurement circuit 4 7.3 8.6 9.9 v output current at olp operation i olp 4-3 (outflow current from fb/cc/olp terminal at v fb = 8 v) measurement circuit 4 12 18 25 a olp delay time t olp 4-3 (time between surpassing v olp(th) and stop of oscillation) measurement circuit 4 0.84 1.2 1.56 s maximum feedback current i fb(max) 4-3 (outflow current from fb/cc/olp terminal at v fb = 0 v) measurement circuit 4 220 310 430 a continued on next page?
STR-A6259H universal input 13 w 100 khz flyback switching regulators 6 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 electrical characteristics for controller (mic) continued, valid at t a = 25c, v cc = 18 v, unless otherwise specified constant current set voltage v set(cc) 4-3 (fb/cc/olp terminal voltage at which i fb changes from 280 a to 16 a due to v fb increasing from 5 v) measurement circuit 4 4.9 5.8 6.7 v constant current reset voltage v res(cc) 4-3 (fb/cc/olp terminal voltage at which i fb changes from 16 a to 280 a due to v fb decreasing from 8 v) v res(cc) v cc = 25 v, measurement circuit 4, v cc = 25 v 3.5 3.9 4.3 v start-up current i startup 6-3 (outflow current from v cc terminal at v dd = 600 v) measurement circuit 5, v cc = 13 v 0.77 1.1 1.43 ma ovp threshold voltage v cc(ovpth) 5-3 (v cc at which the oscillation of the d terminal waveform stops due to v cc increasing from 18 v) measurement circuit 1, v cc = 18 through 31 to 35.2 v 28.8 32 35.2 v latch circuit sustaining current 1 i cc(h) 5-3 (inflow current into vcc at v cc = 8.4 v, after ovp operation) measurement circuit 1, v cc = 35.2 to 8.6 v ? ? 270 a latch circuit release voltage 1 v cc(laoff) 5-3 (v cc at which i cc drops below 20 a due to decreasing v cc after ovp operation) measurement circuit 1, v cc = 35.2 through 5.9 to 8.6 v 5.9 7.2 8.6 v thermal shutdown operating temperature t j(tsd) 125 140 ? c electrical characteristics for mosfet, valid at t a = 25c, v cc = 18 v, unless otherwise specified drain-to-source breakdown voltage v dss 8-1 measurement circuit 6, i d = 300 a 650 ? ? v drain leakage current i dss 8-1 (inflow current into d terminal at v dd = 650 v) measurement circuit 5 ? ? 300 a on-resistance r ds(on) 8-1 measurement circuit 3, i d = 0.4 a ? ? 6 switching time t f 8-1 measurement circuit 2 ? ? 250 ns thermal resistance r ch-f between channel and internal frame; measured at the root of terminal 3 ? ? 52 c/w 1 latch circuit enabled when ovp and tsd in operation
STR-A6259H universal input 13 w 100 khz flyback switching regulators 7 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 0v 13v vcc(on) vcc(off) 18v ic c ( off) vcc v d ic c 18v vcc(la.off) 8.4v ic c ( h) vcc v d ic c vcc(ovp) ic c 36v 140a typ. 4a typ. 1 2 3 4 8 7 5 s/ocp fm/ss fb/cc /olp vcc dd STR-A6259H a 10v 1f 47nf vcc + ic c v dd v d 5.1v gnd v d v fm v l fm v h fm v l fm +(v h fm -v l fm )/2 v cc 18v i fm fosc(av) t1 i sinkfm fosc(hi) fosc(lo) t2 dmax=t2/t1 100 f =fosc(hi)-fosc(lo) i sorcfm 0a 1 2 3 4 8 7 5 s/ocp fm/ss fb/cc /olp vcc dd STR-A6259H 10v 1f vcc 100 100 + v dd v d 5.1v gnd a v fm i fm 18v 0v 10v 90% 10% tf v d vcc 18v v d v ocp vocp v d(lo) tbw r ds(on) =v d(lo) /0.4 0v 1v 1 2 3 4 8 7 5 s/ocpfm/ss fb/cc /olp vcc dd STR-A6259H 1f vcc + v d 5.1v gnd 47nf v ocp 18v i d 0.4a measurement circuit 1 measurement circuit 2 measurement circuit 3
STR-A6259H universal input 13 w 100 khz flyback switching regulators 8 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 vcc vburst v fb vd v (hys) 0v i fb(max) i fb v olp i olp v set(cc) 8v 18v v rst(cc) 20a typ. 280a typ. 280a typ. tolp 25v 1 2 3 4 8 7 5 s/ocp fm/ss fb/cc /olp vcc dd STR-A6259H 10v 1f i fb + v dd gnd vcc a 47nf v fb 1 2 3 4 8 7 5 s/ocp fm/ss fb/cc /olp vcc dd STR-A6259H 1f + v dd gnd vcc a i d a ic c 1 2 3 4 8 7 5 s/ocp fm/ss fb/cc /olp vcc dd STR-A6259H 1f + gnd vcc ic c i d v d v 18v 300 a l 1 2 3 4 8 7 5 s/ocp fm/ss fb/cc /olp vcc dd STR-A6259H 1f + gnd vcc ic c 18v v ds v gs v dd vcc 18v v gs 8v v ds i l v dspeak v dd t 100 measurement circuit 4 measurement circuit 5 measurement circuit 6 measurement circuit 7 () dd ds ds as v peak v peak v i l peak l e ? = 2 2 adjust t such that i lpeak = 1.8 a
STR-A6259H universal input 13 w 100 khz flyback switching regulators 9 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 typical application circuit for improved thermal dissipation, connect terminals 7 and 8 to as large an area of exposed copper as possible 8 7 5 1 2 3 4 vc c d d fb/cc /olp fm/ss st r-a6259h s/ocp 85 ~ 265vac gnd out gnd pc pc r4 r5 function of external parts mode r4 r5 cv/cc 1 to 1.8 m 82 to 150 k olp none none
STR-A6259H universal input 13 w 100 khz flyback switching regulators 10 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 dimens ions in inches (for reference only) dimens ions in millimeters (controlling dimens ions ) package dimensions, dip-8
STR-A6259H universal input 13 w 100 khz flyback switching regulators 11 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 packing specifications 51 0 1 3 0 69 14 0 52 4 63 145 2 65 52 0 2 9 0 135 5 3 5 type a type b 50 pieces stopper, with attached tab orientation of devices in shipping tubes stopper, with no tab minimum packing option: tubes shipping tube dimensions inner carton dimensions capacity: 50 tubes per inner carton outer carton dimensions capacity: 4 inner cartons per outer carton; 10,000 devices maximum per outer carton all dimensions: mm
STR-A6259H universal input 13 w 100 khz flyback switching regulators 12 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 because reliability can be affected adversely by improper storage environments and handling methods, please observe the followi ng cautions. cautions for storage ? ensure that storage conditions comply with the standard temperature (5c to 35c) and the standard relative humidity (around 40 to 75%); avoid storage locations that experience extreme changes in temperature or humidity. ? avoid locations where dust or harmful gases are present and avoid direct sunlight. ? reinspect for rust in leads and solderability of products that have been stored for a long time. cautions for testing and handling when tests are carried out during inspection testing and other standard test periods, protect the products from power surges f rom the testing device, shorts between adjacent products, and shorts to the heatsink. remarks about using silicone grease with a heatsink ? when silicone grease is used in mounting this product on a heatsink, it shall be applied evenly and thinly. if more silicone gr ease than required is applied, it may produce stress. ? volatile-type silicone greases may produce cracks after long periods of time, resulting in reduced heat radiation effect. silic one grease with low consistency (hard grease) may cause cracks in the mold resin when screwing the product to a heatsink. ? our recommended silicone greases for heat radiation purposes, which will not cause any adverse effect on the product life, are indicated below: type suppliers g746 shin-etsu chemical co., ltd. yg6260 toshiba silicone co., ltd. sc102 dow corning toray silicone co., ltd. soldering ? when soldering the products, please be sure to minimize the working time, within the following limits: 2605c 10 s 3505c 3 s ? soldering iron should be at a distance of at least 1.5 mm from the body of the products electrostatic discharge ? when handling the products, operator must be grounded. grounded wrist straps worn should have at least 1 m of resistance to ground to prevent shock hazard. ? workbenches where the products are handled should be grounded and be provided with conductive table and floor mats. ? when using measuring equipment such as a curve tracer, the equipment should be grounded. ? when soldering the products, the head of soldering irons or the solder bath must be grounded in other to prevent leak voltage s generated by them from being applied to the products. ? the products should always be stored and transported in our shipping containers or conductive containers, or be wrapped in al uminum foil. 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. pre cau tions must be taken to prevent accidental contact with power-line potentials. do not connect ground ed test equipment. the use of an isolation transformer is recommended during circuit development and breadboarding.
STR-A6259H universal input 13 w 100 khz flyback switching regulators 13 switching regulators 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 the products described herein are manufactured in ja pan by sanken electric co., ltd. for sale by allegro microsystems, inc. sanken and allegro reserve the right to make, from time to time, such de par tures from the detail spec i fi ca tions as may be re quired to per mit im- prove ments in the per for mance, reliability, or manufacturability of its prod ucts. therefore, the user is cau tioned to ve rify that the in for ma tion in this publication is current before placing any order. when using the products described herein, the ap pli ca bil i ty and suit abil i ty of such products for the intended purpose shall be reviewed at the users responsibility. although sanken undertakes to enhance the quality and reliability of its prod ucts, the occurrence of failure and defect of sem i con duc tor products at a certain rate is in ev i ta ble. users of sanken products are requested to take, at their own risk, preventative measures including safety design of the equipme nt or systems against any possible injury, death, fires or damages to society due to device failure or malfunction. sanken products listed in this publication are designed and intended for use as components in general-purpose electronic equip ment or apparatus (home ap pli anc es, office equipment, tele com mu ni ca tion equipment, measuring equipment, etc.). their use in any applicat ion requiring radiation hardness assurance (e.g., aero space equipment) is not supported. when considering the use of sanken products in ap pli ca tions where higher reliability is re quired (transportation equipment and its control systems or equip ment, fire- or burglar-alarm systems, various safety devices, etc.), contact a company sales representative to discuss and obtain written confirmation of your spec i fi ca tions. the use of sanken products without the written consent of sanken in applications where ex treme ly high reliability is required (aerospace equip- ment, nuclear power-control stations, life-support systems, etc.) is strictly prohibited. the information in clud ed herein is believed to be accurate and reliable. ap pli ca tion and operation examples described in this pub li ca tion are given for reference only and sanken and allegro assume no re spon si bil i ty for any in fringe ment of in dus tri al property rights, intellectual property rights, or any other rights of sanken or allegro or any third party that may result from its use. copyright ? 2006 allegro microsystems, inc. this datasheet is based on sanken datasheet sse2366-2

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