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april 2 011 ? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 1 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? gr een mode fairchild power switch (fps?) fsbh0f70a _f116, fsbh0170_f116, fsbh0270_f116, fsbh0370_f116 green mode fairchild power switch (fps?) features ? bro w n out protection w i t h h y s t eresis ? built-in 5ms so ft-start f unctio n ? internal ava l a n che-rugg ed 7 00v sensef et ? lo w aco u stic noise d u ri ng l i ght-l oad op er ation ? high-v o lta ge s t artup ? lin earl y d e cre a sin g pw m f r equ enc y to 18 khz ? peak-c urrent- m ode c ontrol ? c y c l e-b y - c ycle current lim i tin g ? leading -edge blank ing (leb) ? s y nc hro n ize d slop e comp en sation ? internal ope n - loo p protectio n ? v dd und e r-volt age l o cko ut (uvlo) ? v dd over-volta ge protectio n (ovp) ? internal aut o -restart circuit (ovp, o t p) ? consta nt po w e r limit (f ull ac input ran ge) ? internal ot p sensor w i t h h y s t eresis ? vin pin for pull -high latch f unctio n an d pull-low auto -recov er y pr otection applications genera l -pur po se s w itc h e d -m ode p o w e r s u p p lies and fl y b ack po w e r converters, inc l udi ng: ? auxili ar y po w e r suppl y for pc and server ? smps for vcr, svr, s t b , d v d & dvcd play er, printer, facsimile, an d scan n e r ? adapter for ca mcorder description t he highl y i n tegrated f s b h -series c ons ists of an integr ated curr ent-mod e puls e w i dth mod u l a tor (pw m) and an av al anch e -rug g e d 700v s ens ef et . it is specific all y d e sig ned for high-p e rform ance offlin e sw i t ch ed -mo de po w e r su ppl i e s (smps) w i th minimal ext e rna l comp one nts. t he integrate d pw m controller featur es includ e a propri e tar y gre en-mo de function that provi d es off-time modu latio n to line a rl y decre a se the s w itc h in g freque nc y at lig ht-loa d cond itions t o minimiz e sta ndb y po w e r consum ption. t o avoid aco u stic-no i se pr obl ems, the minimum pw m frequenc y i s set above 18khz. t h is gree n-mod e function e nab les the po w e r sup p l y to me et intern ation a l po w e r conser vation re quir e ments. t he pw m controller is manufac tured usin g the bicmos process to fu rther red u ce po w e r cons u m ption. t h e fsbh-series turns off some in tern al circuits to improve p o w e r sa vi ng w hen v fb is lo w e r than 1.6v, w h ich all o w s an op erati ng c u rrent of onl y 2 . 5ma. t he f sbh-series h a s bu il t-in s y nchr oni zed sl op e compe n satio n to achieve stable p eak-c urrent-mo de control. t he propri e tar y e xternal li ne co mpens ation ensur es co nstant out put p o w e r lim it over a w i de a c inp u t voltag e rang e, from 90 v ac to 264v ac . t he f sbh-series provi des m a n y pr otectio n functions. i n add ition to c y cle-b y -c ycl e cu rrent limitin g, the internal ope n-lo op pr otection circu i t ensur es safety w h en a n open-lo op or output short occurs. pwm output is disa ble d unti l v dd dro p s be l o w the v th - o l p , then the control l er starts up agai n. as long as v dd exce eds 28v, the internal ovp circuit is triggered. comp ared w i t h a discrete mosf et and controller or rcc s w itc h i n g conv erter s o luti on, the f sbh-series reduc es comp one nt count, desi gn size, and w e ight; w h il e incre a si ng efficienc y, productivit y , and s y stem relia bi lit y . t hese devic es provi de a bas ic pl atform that is w e ll s u ite d for the desi g n of cost-effective fl ybac k converters, suc h as in pc au xi liar y p o w e r su p p lies. http://
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 2 fsbh0f70a_f116, fsbh0170/0270/ 0370_f116 ? green mode fairch ild power switch (fps?) ordering information part number sensefet vin pin (pin #4) opera t ing tempera t ure range packag e packing metho d f sbh0f 70an y _f 116 0.5a 700 v not avail abl e -40c to + 105 c 8-pin, du al in- l in e package (dip) tube f sbh017 0ny _ f 116 1.0a 700 v enabled f sbh027 0ny _ f 116 2.0a 700 v f sbh037 0ny _ f 116 3.0a 700v t y pical application d i agram figure 1 . ty pic a l fly b ac k a pplic a t io n output pow e r table (1) product 230v ac 15% (2) 85-2 65v ac adapter (3) open frame (4) adapter (3) open frame (4) fsbh0f70a_f116 7w 10w 6w 8w fsbh0170_f116 10w 15w 9w 13w fsbh0270_f116 14w 20w 11w 16w fsbh0370_f116 17.5w 25w 13w 19w notes: 1. the maximum output power can be li mited by junction temperature. 2. 230 v ac or 100/115 v ac with doublers. 3. typical continuous power in a non-v entilated enclosed adapter with sufficien t drain pattern as a heat sink at 50 ? c ambient. 4. maximum practical continuous power in an open-frame des ign with sufficient drain pattern as a heat sink at 50 ? c ambient. hv drain gnd vdd fb vin
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 3 fsbh0f70a_f116, fsbh0170/0270/ 0370_f116 ? green mode fairch ild power switch (fps?) block diagram figure 2. fsbh0170/0270/0370_f116 internal block diagram figure 3. fsbh0f70a_f116 internal block diagram
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 4 fsbh0f70a_f116, fsbh0170/0270/ 0370_f116 ? green mode fairch ild power switch (fps?) pin configuration figure 4. pin configuration and top mark information pin definitions pin # name description 1 gnd ground . sensefet source terminal on primary side and internal controller ground. 2 vdd power supply . the internal protection circuit disables pwm output as long as v dd exceeds the ovp trigger point. 3 fb feedback . the signal from the external compensation ci rcuit is fed into this pin. the pwm duty cycle is determined in response to the signal on this pin and the internal current-sense signal. 4 vin line-voltage detection . the line-voltage detection is us ed for brownout protection with hysteresis and constant output po wer limit over universal ac input range. this pin has additional protections that are pull-high latch and pull-lo w auto recovery, depending on the application. nc no connection . fsbh0f70a_f116 5 hv startup . for startup, this pin is pulled high to t he line input or bulk capacitor via resistors. 6 drain sensefet drain . high-voltage power sensefet drain connection. 7 drain sensefet drain . high-voltage power sensefet drain connection. 8 drain sensefet drain . high-voltage power sensefet drain connection. f ? fairchild logo z ? plant code x ? 1-digit year code y ? 1-digit week code tt ? 2-digit die-run code t ? package type (n:dip) p ? y: green package m ? manufacture flow code
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 5 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) absolute maximum ratings stresses exceeding the absolute maximum ratings may dam age the device. the device may not function or be operable above the recommended operating conditions and stressi ng the parts to these levels is not recommended. in addition, extended exposure to stresses above the recomm ended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. symbol parameter min. max. unit v drain drain pin voltage (5,6) fsbh0x70/a_f116 700 v i dm drain current pulsed (7) fsbh0f70a_f116 1.5 a fsbh0170_f116 4.0 fsbh0270_f116 8.0 fsbh0370_f116 12.0 e as single pulsed avalanche energy (8) fsbh0f70a_f116 10 mj fsbh0170_f116 50 fsbh0270_f116 140 fsbh0370_f116 230 v dd dc supply voltage 30 v v fb fb pin input voltage -0.3 7.0 v v in vin pin input voltage -0.3 7.0 v v hv hv pin input voltage 700 v p d power dissipation (t a
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 6 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) electrical characteristics v dd = 15v an d t a =25 ? c unles s other w i s e sp ecifie d. sy mbol parameter conditio n min. t y p . max. unit sensefet section bv ds s drain-s ourc e breakd o w n v o l t age v ds = 700v, v gs = 0 v 700 v i dss z e ro-gate-volt age drain c u rre nt v ds = 700v, v gs =0 v 5 0 a v ds = 560v, v gs =0 v, t c = 125 ? c 200 r ds (on) drain-s ourc e on- state resistance (12) v gs = 10v, i d =0 . 5 a f sbh0f 70a_f 116 14.00 19.00 ? f sbh017 0_f 1 1 6 8.80 11.00 f sbh027 0_f 1 1 6 6.00 7.20 f sbh037 0_f 1 1 6 4.00 4.75 c iss input cap a cita nce v gs =0 v, v ds = 25v, f=1mhz f sbh0f 70a_f 116 162 211 pf f sbh017 0_f 1 1 6 250 325 f sbh027 0_f 1 1 6 550 715 f sbh037 0_f 1 1 6 315 410 c oss output cap a cit ance v gs =0 v, v ds = 25v, f=1mhz f sbh0f 70a_f 116 18 24 pf f sbh017 0_f 1 1 6 25 33 f sbh027 0_f 1 1 6 38 50 f sbh037 0_f 1 1 6 47 61 c rss revers e t r ansfer c a pa ci ta n c e v gs =0 v, v ds = 25v, f=1mhz f sbh0f 70a_f 116 3.8 5.7 pf f sbh017 0_f 1 1 6 10.0 15.0 f sbh027 0_f 1 1 6 17.0 26.0 f sbh037 0_f 1 1 6 9.0 24.0 t d(on) t u rn-on delay v ds =350v, i d =1.0a f sbh0f 70a_f 116 9.5 29.0 ns f sbh017 0_f 1 1 6 12.0 34.0 f sbh027 0_f 1 1 6 20.0 50.0 f sbh037 0_f 1 1 6 11.2 33.0 t r rise t i me v ds =350v, i d =1.0a f sbh0f 70a_f 116 19 48 ns f sbh017 0_f 1 1 6 4 18 f sbh027 0_f 1 1 6 15 40 f sbh037 0_f 1 1 6 34 78 t d(off) t u rn-off delay v ds =350v, i d =1.0a f sbh0f 70a_f 116 33.0 76.0 ns f sbh017 0_f 1 1 6 30.0 70.0 f sbh027 0_f 1 1 6 55.0 120.0 f sbh037 0_f 1 1 6 28.2 67.0 t f fall t i me v ds =350v, i d =1.0a f sbh0f 70a_f 116 42 94 ns f sbh017 0_f 1 1 6 10 30 f sbh027 0_f 1 1 6 25 60 f sbh037 0_f 1 1 6 32 74 continued on the following page?
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 7 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) electrical characteristics (continued) v dd =15v and t a =25 q c unless otherwise specified. symbol parameter condition min. typ. max. unit control section v dd section v dd-on start threshold voltage 11 12 13 v v dd-off minimum operating voltage 7 8 9 v i dd-st startup current fsbh0170_f116 v dd-on ? 0.16v 30 a fsbh0270_f116 fsbh0370_f116 fsbh0f70a_f116 v dd-on ? 0.16v 240 320 400 i dd-op operating supply current v dd =15v, v fb =3v 3.0 3.5 4.0 ma i dd-zdc operating current for v fb ? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 8 fsbh0f70a_f116, fsbh0170/0270/ 0370_f116 ? green mode fairch ild power switch (fps?) electrical characteristics (continued) v dd =15v and t a =25 q c unless otherwise specified. symbol parameter condition min. typ. max. unit v fb-n green-mode entry fb voltage 2.3 2.5 2.7 v v fb-g green-mode ending fb voltage 1.9 2.0 2.1 v v fb-zdc zero duty cycle fb voltage 1.6 v v fb-olp fb open-loop trigger level fsbh0f70a_f116 5.2 5.4 5.6 v fsbh0x70_f116 4.4 4.6 4.8 t d-olp fb open-loop protection delay 50 56 59 ms current-sense section (15) i lim peak current limit fsbh0f70a_f116 v in open 0.63 0.73 0.83 a fsbh0170_f116 v in =1.2v 0.70 0.80 0.90 fsbh0270_f116 v in =1.2v 0.90 1.00 1.10 fsbh0370_f116 v in =1.2v 1.10 1.20 1.30 t ss period during soft-start time (11) 4.5 5.0 5.5 ms constant power limit (fsbh0170, fsbh0270, fsbh0370) v lmt1 threshold voltage 1 for current limit v in =1.2v 0.73 0.80 0.87 v v lmt2 threshold voltage 2 for current limit v in =3.6v 0.56 0.63 0.70 v constant power limit (fsbh0f70a) v lmt threshold voltage for current limit 0.97 1.00 1.03 v over-temperature protection section (otp) t otp protection junction temperature (11,13) +135 +142 +150 c t restart restart junction temperature (11,14) t otp -25 c notes: 11. these parameters, although guaranteed , are not 100% tested in production. 12. pulse test: pulse width
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 9 fsbh0f70a_f116, fsbh0170/0270/ 0370_f116 ? green mode fairch ild power switch (fps?) typical characteristics figure 6. i dd-st vs. temperature figure 7. i dd-op vs. temperature figure 8. v dd-on vs. temperature figure 9. v dd-off vs. temperature figure 10. v th-olp vs. temperature figure 11. v dd-ovp vs. temperature figure 12. i hv vs. temperature figure 13. i hv-lc vs. temperature 0 2 4 6 8 10 12 14 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) i dd-st (a) 2.86 2.88 2.90 2.92 2.94 2.96 2.98 3.00 3.02 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) i dd-op (a) 11.2 11.4 11.6 11.8 12.0 12.2 12.4 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v dd-on (v) 7.7 7.8 7.9 8.0 8.1 8.2 8.3 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v dd-off (v) 5.0 5.2 5.4 5.6 5.8 6.0 6.2 6.4 6.6 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v th-olp (v) 28.35 28.36 28.37 28.38 28.39 28.40 28.41 28.42 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v dd-ovp (v) 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) i hv (ma) 0 1 2 3 4 5 6 7 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) i hv-lc (a)
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 10 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) typical characteristics figure 14. f osc vs. temperature figure 15. f osc-g vs. temperature figure 16. v in-off vs. temperature figure 17. v in-on vs. temperature figure 18. v in-h vs. temperature figure 19. v in-l vs. temperature figure 20. v fb-olp vs. temperature figure 21. v fb-n vs. temperature 97.5 98.0 98.5 99.0 99.5 100.0 100.5 101.0 101.5 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) f osc (khz) 18.6 18.7 18.8 18.9 19.0 19.1 19.2 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) f osc-g (khz) 0.58 0.59 0.60 0.61 0.62 0.63 0.64 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v in-off (v) 1.11 1.12 1.13 1.14 1.15 1.16 1.17 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v in-on (v) 4.57 4.58 4.59 4.60 4.61 4.62 4.63 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v in-h (v) 0.28 0.29 0.30 0.31 0.32 0.33 0.34 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v in-l (v) 4.35 4.40 4.45 4.50 4.55 4.60 4.65 4.70 4.75 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v fb-olp (v) 2.30 2.35 2.40 2.45 2.50 2.55 2.60 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v fb-n (v)
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 11 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) typical characteristics figure 22. v fb-g vs. temperature figure 23. v fb-zdc vs. temperature figure 24. i dd-zdc vs. temperature figure 25. t d-olp vs. temperature 1.80 1.85 1.90 1.95 2.00 2.05 2.10 2.15 2.20 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v fb-g (v) 1.200 1.300 1.400 1.500 1.600 1.700 1.800 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) v fb-zdc (v) 2.42 2.44 2.46 2.48 2.50 2.52 2.54 2.56 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) i dd-zdc (ma) 51.5 52.0 52.5 53.0 53.5 54.0 54.5 55.0 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature(c) t d-olp (ms)
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 12 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) functional description startup operation the hv pin is connected to bulk voltage through an external resistor, r hv , as shown in figure 26. when ac voltage is applied to the power system, an internal hv startup circuit provides a high current (around 3.5ma) to charge an external v dd capacitor until v dd voltage exceeds the turn-on threshold voltage (v dd-on ). for lower power consumption, the hv startup circuit shuts down during normal operation. the external v dd capacitor and auxiliary winding maintain the v dd voltage and provide operating current to controller. figure 26. startup circuit slope compensation the fsbh-series is designed for flyback power converters. the peak-current-mode control is used to optimize system performanc e. slope compensation is added to reduce current loop gain and improve power system stability. the fsbh-series has a built-in, synchronized, positive slope for each switching cycle. soft-start the fsbh-series has an internal soft-start circuit that reduces the sensefet switching current during power system startup. the characte ristic curve of soft-start time versus v lmt level is shown in figure 27. the v lmt level rises in six steps. by doing so, the power system can smoothly build up the rated output voltage and effectively reduce voltage stress on the pwm switch and output diode. figure 27. soft-start function brown-in/out function fsbh0x70 has a built-in internal brown-in/out protection comparator monitoring volt age of vin pin. figure 28 shows a resistive divider with low-pass filtering for line- voltage detection on the vin pin. figure 28. brown-in/out function on vin pin once the vin pin voltage is lower than 0.6v and lasts for :
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 13 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) brown-in function of fsbh0f70a the vin pin functions are disabled in fsbh0f70a, but fsbh0f70a has brown-in protection in the vdd pin. there is a discharge current internal from v dd to ground during startup. the hv sour ce current must be larger than i dd-st to charge the capacitor of v dd . therefore, the brown-in level can be determined by r hv according to the equation: 212 ac hv dd st v r i (4) green-mode operation the fsbh-series uses feedback voltage (v fb ) as an indicator of the output load and modulates the pwm frequency, as shown in figure 30, such that the switching frequency decreases as load decreases. in heavy-load conditions, the switching frequency is 100khz. once v fb decreases below v fb-n (2.5v), the pwm frequency starts to linearly decrease from 100khz to 18khz to reduce switching losses. as v fb decreases below v fb-g (2.0v), the switching frequency is fixed at 18khz and the fsbh-series enters ?deep? green mode to reduce the standby power consumption. figure 30. pwm frequency as v fb decreases below v fb-zdc (1.6v), the fsbh- series enters burst-mode operation. when v fb drops below v fb-zdc , fsbh-series stops switching and the output voltage starts to drop, which causes the feedback voltage to rise. once v fb rises above v fb-zdc , switching resumes. burst mode alternately enables and disables switching, thereby reducing switching loss to improve power saving, as shown in figure 31. figure 31. burst-mode operation h/l line over-power compensation to limit the output power of the converter constantly, high/low
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 14 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?) figure 34. olp operation v dd over-voltage protection (ovp)
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 15 fsbh0f70a_f116, fsbh0170/0270/ 0370_f116 ? green mode fairch ild power switch (fps?) physical dimensions figure 35. 8-pin dual in-line package (dip) package drawings are provided as a service to customers consi dering fairchild components. drawings may change in any manner without notice. please note the revision and/or date on the drawi ng and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packagi ng area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ .
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fsbh0f70a_f116, f sbh0170/0270/0370_f116 ? rev. 1.0.1 16 fsbh0f70a_f116, fsbh0170/0270/0370_f116 ? green mode fairchild po wer switch (fps?)

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