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str-y6753 and STR-Y6754 description the str-y6753 and STR-Y6754 each comprise a power mosfet and a multi-functional monolithic integrated circuit (mic) controller designed for controlling switch mode power supplies. the quasi-resonant mode of operation, coupled with the bottom-skip function, allows high efficiency and low noise at low to high operational levels, while burst oscillation mode ensures minimum power consumption at standby. in order to sustain low power consumption under low load and in standby mode, the controller has built-in startup and standby circuits. this enables output power for the str-y6753 up to 60 w with universal input or 100 w with a 380 vdc input, and for the STR-Y6754 up to 67 w with universal input or 120 w with a 380 vdc input. the compact 7-pin full mold package (to220f-7l) reduces board space by requiring a minimum of external components, thus simplifying circuit design. this ic, including various protection functions, is an excellent choice for standardized, compact power supplies. features and benefits ? to?220f?7l package ? lead (pb) free compliance ? the built-in startup circuit reduces the number of external components and lowers standby power consumption ? multi-mode control allows high efficiency operation across the full range of loads ? auto burst oscillation mode for standby mode, for improving low standby power at no load: input power < 30 mw at 100 vac and < 50 mw at 230 vac ? bottom-skip mode minimizes switching loss at medium to low loads ? internal mosfet v dss (min) is 650 v ? internal mosfet r ds(on) (max) 1.9 (str-y6753) or 1.4 (STR-Y6754) ? built-in soft start function reduces stress applied to the incorporated power mosfet and peripheral components ? step-on burst oscillation minimizes transformer audible noise ? built-in leading edge blanking (leb) function eliminates off-line quasi-resonant switching regulators not to scale package: 7-pin to-220f continued on the next page? typical application gnd error amp vcc controller chip (mic) str-y6700 gnd / olp fb bd c1 p s t1 d c2 dz d1 r2 bd r bd2 r c bd c4 pc1 c3 r c v pc1 d/st s/ocp bd1 nf v out r3 d2 c5 oc p r4 r5 vac 3 1 6 5 4 2 7 the nf pin (no. 7) should be connected to the gnd pin (no. 4), which should be at a stable ground potential, to ensure stability of operation. str-y6753-ds sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 absolute maximum ratings unless specifically noted, t a = 25c and v cc = 20 v characteristic symbol notes pins rating unit drain current 1 i dpeak str-y6753 single pulse 1 ? 2 9.2 a STR-Y6754 11.0 a maximum switching current i dmax str-y6753 t a = ? 20c to 125c 1 ? 2 9.2 a STR-Y6754 11.0 a single pulse avalanche energy 2 e as str-y6753 single pulse, v dd = 99 v, l= 20 mh, i lpeak = 2.9 a 1 ? 2 99 mj STR-Y6754 single pulse, v dd = 99 v, l= 20 mh, i lpeak = 4.1 a 198 mj input voltage in control part (mic) v cc 3 ? 4 35 v startup (d/st) pin voltage v startup 1 ? 4 ? 1.0 to v dss v ocp pin voltage v ocp 2 ? 4 ? 2.0 to 6.0 v fb pin voltage v fb 5 ? 4 ? 0.3 to 7.0 v fb pin sink current 3 i fb 5 ? 4 10.0 ma bd pin voltage v bd 6 ? 4 ? 6.0 to 6.0 v power dissipation in mosfet 4 p d1 str-y6753 with an infinite heatsink 1 ? 2 20.2 w STR-Y6754 21.5 w without heatsink 1 ? 2 1.8 w power dissipation in control part (mic) p d2 ? 0.8 w internal frame temperature in operation t f recommended internal frame temperature is t f = 105c (max). ? ? 20 to 115 c operating ambient temperature t op ? ? 20 to 115 c storage temperature t stg ? ? 40 to 125 c channel temperature t ch ? 150 c 1 refer to mosfet safe operating area curve. 2 refer to mosfet avalanche energy derating coefficient curve. 3 the polarity value for current specifies a sink as "+ ," and a source as ? ? ,? referencing the ic. 4 refer to mosfet temperature versus power dissipation curve. external filter components ? built-in bias assist function enables stable startup operation ? v cc operational range expanded ? internal power mosfet is avalanche energy guaranteed; two- chip structure ? protection functions ? overcurrent protection (ocp): pulse by pulse basis, low dependence on input voltage ? overload protection (olp): latched shutoff* ? overvoltage protection (ovp): latched shutoff* ? maximum on-time limitation ? thermal shutdown protection (tsd): latched shutoff* features and benefits (continued) *latched shutoff means the output is kept in a shutoff mode for protection, until reset. selection guide part number v dss (min) (v) r ds(on) (max) ( ) package packing str-y6753 650 1.9 to-220f 50 pieces per tube STR-Y6754 1.4 str-y6753-ds 2 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 functional block diagram vcc gnd d/st s/ocp fb/olp bd uvlo reg/iconst latch osc startup logic drv ocp/bs fb/stb olp bd nf 3 1 2 5 6 4 7 mic str-y6700 pin list table name number function 1 d/st mosfet drain and startup circuit input 2 s/ocp mosfet source and overcurrent detection signal input 3 vcc control circuit power supply input 4 gnd ground 5 fb/olp constant voltage control signal input, standby control, and overload detection signal input 6bd bottom detection signal input, input compensation detection signal input 7nf for stable operation, connect to gnd pin, using the shortest possible path all performance characteristics given are typical values for circuit or system baseline design only and are at the nominal operating voltage and an ambient temperature, t a , of 25c, unless oth er wise stated. str-y6753-ds 3 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 electrical characteristics of control part (mic) unless specifically noted, t a = 25c and v cc = 20 v characteristic symbol test conditions pins min. typ. max. unit power supply startup operation operation start voltage v cc(on) 3 ? 4 13.8 15.1 17.3 v operation stop voltage 1 v cc(off) 3 ? 4 8.4 9.4 10.7 v circuit current in operation i cc(on) 3 ? 4 ? 1.3 3.7 ma circuit current in non-operation i cc(off) v cc = 13 v 3 ? 4 ? 4.5 50 a startup circuit operation voltage v start(on) 1 ? 4 42 57 72 v startup current i cc(startup) v cc = 13 v 3 ? 4 ? 4.5 ? 3.1 ? 1.0 ma startup current supply threshold voltage 1 v cc(bias) 3 ? 4 9.5 11.0 12.5 v operation frequency f osc 1 ? 4 18.4 21.0 24.4 khz soft start operation duration t ss 1 ? 4 ? 6.05 ? ms normal operation bottom-skip operation threshold voltage 1 v ocp(bs1) 2 ? 4 0.487 0.572 0.665 v bottom-skip operation threshold voltage 2 v ocp(bs2) 2 ? 4 0.200 0.289 0.380 v quasi-resonant operation threshold voltage 1 2 v bd(th1) 6 ? 4 0.14 0.24 0.34 v quasi-resonant operation threshold voltage 2 2 v bd(th2) 6 ? 4 ? 0.17 ? v maximum feedback current i fb(max) 5 ? 4 ? 320 ? 205 ? 120 a stand-by operation standby operation threshold voltage v fb(stbop) 5 ? 4 0.45 0.80 1.15 v protected operation maximum on-time t on(max) 1 ? 4 30.0 40.0 50.0 s leading edge blanking time t on(leb) str-y6753 1 ? 4 ? 470 ? ns STR-Y6754 ? 455 ? ns overcurrent detection threshold voltage (normal operation) v ocp(h) v bd = 0 v 2 ? 4 0.820 0.910 1.000 v overcurrent detection threshold voltage (input compensation in operation) v ocp(l) v bd = ?3 v 2 ? 4 0.560 0.660 0.760 v overcurrent detection threshold voltage (latched shutoff) 3 v ocp(la.off) 2 ? 4 1.65 1.83 2.01 v continued on the next page? str-y6753-ds 4 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 electrical characteristics of mosfet unless specifically noted, t a = 25c and v cc = 20 v characteristic symbol test conditions pins min. typ. max. unit voltage between drain and source v dss 1 ? 2 650 ? ? v drain leakage current i dss 1 ? 2 ? ? 300 a on-resistance r ds(on) str-y6753 1 ? 2 ? ? 1.9 STR-Y6754 1 ? 2 ? ? 1.4 switching time t f str-y6753 1 ? 2 ? ? 250 ns STR-Y6754 1 ? 2 ? ? 300 ns thermal resistance r ch-f str-y6753 between a channel of the mosfet and the internal leadframe ? ? 2.7 3.1 c/w STR-Y6754 ? ? 2.4 2.7 c/w bd pin source current i bd(o) 6 ? 4 ? 250 ? 83 ? 30 a olp bias current i fb(olp) 5 ? 4 ? 15 ? 10 ? 5 a olp threshold voltage v fb(olp) 5 ? 4 5.50 5.96 6.40 v ovp threshold voltage v cc(ovp) 3 ? 4 28.5 31.5 34.0 v fb pin maximum voltage in feedback operation v fb(max) 5 ? 4 3.70 4.05 4.40 v thermal shut down temperature t j(tsd) ? 135 ? ? c note: the polarity value for current specifies a sink as "+ ," and a source as ? ? ,? referencing the ic. 1 the relation of v cc(bias) > v cc(off) is maintained. 2 the relation of v bd(th1) > v bd(th2) is maintained in each product. 2 the latch circuit means a circuit operated ovp, olp, ocp (latch-off), or tsd. electrical characteristics of control part (mic) (continued) unless specifically noted, t a = 25c and v cc = 20 v characteristic symbol test conditions pins min. typ. max. unit str-y6753-ds 5 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 10 1 0.1 0.01 0.001 transient thermal resistance, r ch-c (c/w) transient thermal resistance curve time (s) 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 ambient temperature, t a (c) 30 25 20 15 10 5 0 with infinite heatsink 20.2 1.8 without heatsink 0 25 50 75 125 100 150 mosfet temperature versus power dissipation curve allowable power dissipation, p d1 (w) 115 channel temperature, t ch (c) 100 80 60 40 20 0 25 50 75 125 100 150 eas temperature derating coefficient (%) mosfet avalanche energy derating coefficient curve drain-to-source voltage, v ds (v) 10 1 0.1 0.01 mosfet safe operating area curve drain current limited by on-resistance 1 ms 0.1 ms drain current, i d (a) to use this graph, apply the s.o.a temperature derating coefficient taken from the graph at the left t a = 25c single pulse 100 10 1000 channel temperature, t ch (c) 100 80 60 40 20 0 0 25 50 75 125 100 150 safe operating area temperature derating coefficient (%) s. o. a. temperature derating coefficient curve 115 characteristic performance (str-y6753) str-y6753-ds 6 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 10 1 0.1 0.01 0.001 transient thermal resistance, r ch-c (c/w) transient thermal resistance curve time (s) 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 ambient temperature, t a (c) 30 25 20 15 10 5 0 with infinite heatsink 21.5 1.8 without heatsink 0 25 50 75 125 100 150 mosfet temperature versus power dissipation curve allowable power dissipation, p d1 (w) 115 channel temperature, t ch (c) 100 80 60 40 20 0 25 50 75 125 100 150 eas temperature derating coefficient (%) mosfet avalanche energy derating coefficient curve drain-to-source voltage, v ds (v) 100 10 1 0.1 mosfet safe operating area curve drain current limited by on-resistance 1 ms 0.1 ms drain current, i d (a) to use this graph, apply the s.o.a temperature derating coefficient taken from the graph at the left t a = 25c single pulse 100 10 1000 channel temperature, t ch (c) 100 80 60 40 20 0 0 25 50 75 125 100 150 safe operating area temperature derating coefficient (%) s. o. a. temperature derating coefficient curve 115 characteristic performance (STR-Y6754) str-y6753-ds 7 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 package outline drawing b a str 5.6 0.2 at base of pin at base of pin at tip of pin front view side view at tip of pin 0.3 5.850.15 5p1.170.15 50.5 0.2 1.1 0.2 7 6 5 4 3 2 1 10 15 0.5 10.4 7-0.55 +0.2 -0.1 7-0.62 0.15 2 0.15 2.8 +0.2 4.2 2.6 0.1 2.6 r-end 50.5 r-end -0.1 +0.2 0.45 2.540.6 5.080.6 0.5 0.5 0.5 0.5 gate burr unit: mm b: lot number 1 st letter: last digit of year 2 nd letter: month jan to september: numeric october: o november: n december: d 3 rd and 4 th letter: date 01 to 31: numeric 5 th letter: internal use control number package: to-220f (sanken leadform #3051) leadframe material: cu weight: approximately 1.45 g a: part # y6753 [or y6754] ?3.2 0.2 "gate burr" shows area where 0.3 mm (max) gate burr may be present pin treatment: solder dip pin treatment pb-free. device composition compliant with the rohs directive. str-y6753-ds 8 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 540 2 antistatic 6 2 0 1 2 5 1 8 5 14.5 4.5 34.5 4.8 0.3 1. 5 0. 3 2.1 17.3 15. 6 0.3 6 11 (15.9) 50 pieces per tube tube dimensions (mm) carton dimensions (mm) 36 tubes per carton (maximum) 1800 pieces maximum per carton packing specifications str-y6753-ds 9 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 because reliability can be affected adversely by improper storage environments and handling methods, please observe the following 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 on 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 from the testing device, shorts between the product pins, and wrong connections. 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 grease than required is applied, it may produce excess stress. ? volatile-type silicone greases may crack after long periods of time, resulting in reduced heat radiation effect. silicone 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 momentive performance materials, inc. sc102 dow corning toray co., ltd. heatsink assembly ? attachment torque should be in the range 0.588 to 0.785 n ? m (6 to 8 kgf ? cm). soldering ? the leadframe temperature should never exceed t f = 105c(max). ? when soldering the products, please be sure to minimize the working time, within the following limits: 2605c 10 s 3505c 3 s (solder iron) ? soldering iron should be at a distance of at least 2.0 mm from the body of the products. electrostatic discharge ? when handling the products, the operator must be grounded. grounded wrist straps worn should have at least 1 m of resistance from the operator to ground to prevent shock hazard, and it should be placed near the operator. ? 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 voltages generated by them from being applied to the products. ? the products should always be stored and transported in sanken shipping containers or conductive containers, or be wrapped in aluminum foil. str-y6753-ds 10 sanken electric co., ltd.
off-line quasi-resonant switching regulators str-y6753 and STR-Y6754 ? the contents in this document are subject to changes, for improvement and other purposes, without notice. make sure that this is the latest revision of the document before use. ? application and operation examples described in this document are quoted for the sole purpose of reference for the use of the products herein and sanken can assume no responsibility for any infringement of industrial property rights, intellectual property rights or any other rights of sanke n or any third party which may result from its use. ? although sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of se miconductor products at a certain rate is inevitable. users of sanken products are requested to take, at their own risk, preventative measures including safety design of the equipment or systems against any possible injury, death, fires or damages to the society due to device failure or malfunction. ? sanken products listed in this document are designed and intended for the use as components in general purpose electronic equ ipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). when considering the use of sanken products in the applications where higher reliability is required (transportation equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various safety devices, etc.), and whenever long life expectancy is required even in general purpose electronic equipment or apparatus, please contact your nearest sanken sales representative to discuss, prior to the use of the products herein. the use of sanken products without the written consent of sanken in the applications where extremely high reliability is requir ed (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly prohibited. ? in the case that you use our semiconductor devices or design your products by using our semiconductor devices, the reliabilit y largely depends on the degree of derating to be made to the rated values. derating may be interpreted as a case that an operation range is set by derating the l oad from each rated value or surge voltage or noise is considered for derating in order to assure or improve the reliability. in general, derating factors include electric stresses such as electric voltage, electric current, electric power etc., environmental stresses such as ambient temperature, humidity etc. and thermal stress cau sed due to self-heating of semiconductor devices. for these stresses, instantaneous values, maximum values and minimum values must be taken into consideration. in addition, it should be noted that since power devices or ic?s including power devices have large self-heating value, the deg ree of derating of junction temperature (t j ) affects the reliability significantly. ? when using the products specified herein by either (i) combining other products or materials therewith or (ii) physically, ch emically or otherwise processing or treating the products, please duly consider all possible risks that may result from all such uses in advance and proceed therew ith at your own responsibility. ? anti radioactive ray design is not considered for the products listed herein. ? sanken assumes no responsibility for any troubles, such as dropping products caused during transportation out of sanken?s di stribution network. ? the contents in this document must not be transcribed or copied without sanken?s written consent. str-y6753-ds 11 sanken electric co., ltd.

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