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d a t a s h eet ds_s4 8 se3r 305 _1 229 20 06 delphi s48se, 17w 1x1 brick series dc/dc power modules: 48v in, 3.3v/5a out the del phi s48se seri es, 1x1 brick, 48 v input, singl e output, isol ated dc/ dc co nverters a r e th e latest of feri n g from a wo rl d lead er in p o we r system s tech nology and manufa c turi n g D delt a electronics, inc. this prod uct famil y is availabl e in a surfa c e mount o r thro ugh-hole p a ckag e and p r ovide s up to 17 watt s of po wer o r 5a of output curre n t (3.3v and belo w ) in a st anda rd 1x1 f o rm fa ctor (1 .1?x0.96?x0.3 3?). th e pino ut is com p atible with the industry st a nda rd 1x2 produ ct s. with creative desi gn techn o logy and o p timization o f compo nent place m ent, t hese conve r ters po ssess out st a n d ing ele c tri c a l and therm a l performan ce , as well as extremely high reliability un der highly stressful operating con d ition s . t y pical ef ficie n c y of 3.3v/5a module is b e tter than 87% and all module s are fully protected from abno rmal inp u t/output volt age, curre n t, and tempe r ature condition s. optio n s positive, negative, or no on/ o f f t r im pin otp and output ovp , ocp mod e , auto-rest a r t (d efa u lt) or latch-up surface mounted version short pin lengths applica t i o ns optical t r ansport dat a net w orking communications, including wirele ss and traditional t e lecom servers fea t ures high ef ficiency : 8 7 % @3.3v/ 5a size: 27.9x24.4 x 8.3mm (1.1 ?x0 . 9 6 ?x0. 33? ) industr y st an dar d 1x2 pinout smt and throu g h -hole versions 2:1 input volt age range input uvl o , ov p , output ocp , ovp and otp monotonic st artu p into normal an d pre-bias loads output volt age t r im 10% 2250v isolation and basic insulatio n no minimum load required iso 9001, t l 90 00, iso 14 001, qs9000, o h sas1800 1 certified manufactu ring facility ul/cul 60950 ( u s & canada ) r e cognized, and tuv (en 609 50) certified. ce mark meet s 73/23/eec and 9 3 /68/eec directives
technical specifica t i o ns ( t a =25 c, airfl o w rate=300 lfm , v in =48vdc, n o m inal v o u t u n le ss ot her w ise no ted.) pa r a m e t e r notes an d conditions s48se3r305 (s t a ndard) min . t y p . ma x . u n it s a b solute m a xi mu m ra tings inpu t v o lt ag e continuou s 8 0 v d c t r a n s i e nt ( 1 00 m s ) 100ms 100 vdc operati ng t e mpera t ure refer to figure 20 for mea s uring poin t -40 1 14 c s t orage t e mperatu r e -55 125 c inpu t/ou t pu t isola t i on v o lt age 2250 vdc input cha r a c teristics operati ng inpu t v o l t age 36 75 vdc inpu t under -v ol t a g e lo cko ut t u rn-on v o l t age th reshold 33 34 35 vdc t u rn-o f f v o lt age th reshold 31 32 33 vdc lockout hy stere s is v o lt age 1.0 2 3.0 vdc max i mu m i npu t current 100% lo ad, 36v i n 0.6 a no-load inpu t curr ent 24 ma of f conv erter inpu t current 7 ma inru sh c u r r ent ( i 2 t) 0.01 a 2 s inpu t re flected-rip p le curren t p-p thru 12 h ind u c to r , 5h z to 20m h z 10 ma inpu t v o lt ag e rippl e rejection 120 hz 60 db output ch a r a c teri sti c s outpu t v o lt age set point v i n=48v , io= i o . max, t c =25c 3.25 3.3 3.345 vdc outpu t v o lt age reg u lation ov er load io= i o , m i n to io , m a x 3 10 mv ov er line v i n=36v to 75v 3 10 mv ov er t e mperature t c =-40c to 100c 33 mv t o t a l ou tpu t v o lt ag e range ov er sample lo ad, l i ne and temperatur e 3.2 3.4 v outpu t v o lt age rip p le and noise 5hz to 20mhz ban dw id th peak- t o-pe ak full load , 1f cer a mic, 10f t a nt alum 40 mv rms full load , 1f cer a mic, 10f t a nt alum 10 mv operati ng outpu t current range 0 5 a outpu t dc cur r ent- l imit in ception outpu t v o lt age 1 0 % low 1 10 130 % dyn a m i c ch a r a c teri sti c s outpu t v o lt age cur r ent t r an sien t 48v , 1 0 f t an & 1 f ceramic load ca p , 0 . 1a /s posi tiv e s t ep chan ge in ou tput curre nt 50% io.max to 75% io .max 100 mv negativ e s t ep cha nge in ou tpu t curr ent 75% io.m ax to 50% io .m ax 100 mv settling t i me (w ithi n 1% v o ut nominal) 600 us t u rn-on t r an sien t s t art-up t i me, fro m on/of f con t rol 20 ms s t art-u p t i m e , f r o m inpu t 20 ms max i mu m outpu t c a p a cit a n c e full load ; 5 % ov ershoot of v out a t st ar tup 1000 f effi ci ency 100% lo ad 85% 87.0 % 60% loa d 8 4 . 5 % 8 6 . 0 % i s o l at i o n c h ar ac t e r i s t i c s inpu t to outp ut 2250 vdc isol ation re sist ance 10 m ? isol ation cap a cit a n c e 1000 pf fe a t ure ch a r acteri s ti cs sw itching freq uen cy 400 kh z on/off control, n egativ e remote on /o f f logi c logic low (module on) v on/of f -0.7 0.8 v logic high (mo dule o f f) v on/of f 2 18 v on /of f c ont rol, p o sit i v e r e m o te on / o f f log i c logic low (module of f) v on/of f -0.7 0.8 v logic high (mo dule on) v on/of f 2 18 v on /of f c u rren t (f or bo th rem o te on /o f f logi c) ion/of f at v o n/o f f=0.0v 0.25 ma leakage curren t (for bo th remote on /o f f logi c) logic high, v on/of f=15v 30 ua outpu t v o lt age t r i m range a c r o s s t r i m p i n & + v o o r ?v o, p o u t Q max rated -10% 10% % o u t p ut o v e r - v o l ta ge p r ot ec t i o n ov er full temp rang e; % o f nominal v o ut 3.96 4.62 v genera l specifica t ions mtbf io=80% of io, max ; t a =25c; 30 0lfm 4.48 m hour s we i g ht 9 . 2 g r a m s ov er-t emperature shut dow n refer to figure 20 for mea s uring poin t 1 19 c ds_s48se3 r30 5_1 2292 006 2
electri cal characteristi cs cur ves figure 1 : ef ficiency vs. load current for mini mu m, no mi na l, and max i mu m in put volt age at 2 5 c f i g u r e 2 : power dissip a tion vs. load c u r r ent f o r min i mu m, no mi nal, an d max i mu m in put volt age at 2 5 c figure 3 : t y pical full lo ad input charac teristics at ro o m temp eratur e 45 50 55 60 65 70 75 80 85 90 0. 5 1 . 0 1. 5 2 . 0 2. 5 3 . 0 3. 5 4 . 0 4. 5 5 . 0 o u t p ut cu rr e n t ( a ) ef f i c i en c y ( % ) 36v i n 48 v i n 75v i n 0. 5 1. 0 1. 5 2. 0 2. 5 3. 0 0. 5 1 . 0 1. 5 2 . 0 2. 5 3 . 0 3 . 5 4 . 0 4. 5 5 . 0 o u t p ut cu rre nt ( a ) p o w e r di s s i p a t i o n ( w ) 48v i 75v i n 36 v i n ds_s48se3 r30 5_1 2292 006 3
electri cal characteristi cs cur ves for negative remote on/off logic figure 4 : t u rn-on transie nt at full rated loa d current (5 ms / d iv ) . v i n= 4 8 v . t op t r ace: v o ut, 1v/div; botto m t r ace: on/of f input, 5v/div f i g u r e 5 : t u rn-on trans ient at z e ro lo ad current (5 ms/ d iv). v i n = 4 8 v . t o p t r a c e : v o u t , 1 v / d i v , b o t t o m t r a c e : o n / o f f i nput, 5v/div for positive remote on/off logic figure 6 : t u rn-on transie nt at full rated loa d current (5 ms / d iv ) . v i n= 4 8 v . t op t r ace: v o ut, 1v/div; botto m t r ace: on/of f input, 5v/div f i g u r e 7 : t u rn-on trans ient at z e ro lo ad current (5 ms/ d iv). vi n = 4 8 v . t op t r ace: v out, 1v/div; bottom t r a c e: on/of f in put, 5v/div 0 0 0 0 0 0 0 0 ds_s48se3 r30 5_1 2292 006 4
electri cal characteristi cs cur ves figure 8 : output volt ag e re spons e to step-cha nge i n l oad current (75 % -5 0% of io, max; di/d t = 0.1a/ s ) . load ca p: 10 f t ant alu m c a p a c i tor an d 1 f ce ramic ca p a cito r . t op t r ace: v o ut (100 mv/d iv , 200us/d iv), bottom t r ace: iout (2a/div). scope me asur e m ent shou ld be ma de usi ng a bnc cabl e (len gth shorter tha n 2 0 inch es). positi on the lo ad bet w een 5 1 mm to 76 mm (2 inc hes t o 3 inch es) from the mo dul e f i g u r e 9 : output volt a ge re spons e to ste p -cha nge in l o a d current (50%- 7 5% of io, max; di/d t = 0.1a/ s). load cap: 1 0 f t ant alu m cap a c i tor and 1 f c e ra mic cap a cit o r . t o p t r ace: v out (100 mv/d iv , 200us/d iv ) , bottom t r ace: iout (2a/div). sc ope me asur e m ent shou ld b e ma de usi ng a b nc cab l e (le n g th shorter than 20 inches). positi on the loa d bet w een 51 mm to 76 mm (2 inc hes t o 3 inch es) from the mo dul e figure 1 0 : t e st set-up diagr am sh ow ing measur e m ent po int s for input t e rmi nal ri ppl e cur r ent and input reflected rip ple current. note: meas ure d inp u t reflecte d-ripp le c u rrent w i th a simulat e d source ind u ct ance (l test ) of 12 h. cap a cit o r cs of fset possi ble b a tter y imp e d ance. measur e curre nt as show n be low . f i g u r e 1 1 : inp u t t e r m in al ri p p le curr ent, i c , at full rated output current an d no mi nal i n p u t volt age w i th 12 h source i m ped a n ce and 3 3 f e l ect r olytic cap a c i to r (200 ma/div , 1 u s/div) 0 0 0 0 0 ds_s48se3 r30 5_1 2292 006 5
electri cal characteristi cs cur ves strip copper vo(-) vo(+) 10u 1u scope resistiv e load figure 1 2 : input reflecte d ri ppl e curre nt, i s , through a 12 h source i nducto r at nomi nal i n put volt ag e an d rated loa d cu rrent (20 ma/ d iv , 1u s/div) f i g u r e 1 3 : output volt ag e no ise an d rip p le me asur e m ent test setup figure 1 4 : output volt ag e rip p le at n o m i nal inp u t volt ag e a n d rated lo ad curr ent (io= 5a)(20 mv/div , 1us/ d iv ) loa d cap a cit a nce: 1 f cer a mic c a p a c i tor and 10 f t antalu m cap a cit o r . ban d w i d t h: 20 mhz . sc op e meas ure m e n t s shoul d b e ma de usin g a bnc cab l e (l ength s horter than 2 0 inc h e s ). positio n the load betw een 5 1 mm to 76 mm (2 inches to 3 inch es) from th e mo du le f i g u r e 1 5 : output volt a ge vs. load curr e n t show ing ty pical current li mit cu rves and co nve r ter shut dow n poi nt s 0 0 ds_s48se3 r30 5_1 2292 006 6
the input so urce must b e insulate d from the ac mains by reinforced or double insulation. the input terminals of the module are not operator acce ssi ble. if the metal base p late is g r oun ded , one vi pin and one vo pin sh all also b e ground ed. a selv reliability test is condu cted on the system whe r e th e m odule i s u s e d , in combin ation with th e module, to ensure that under a singl e fault, hazard o u s voltage doe s no t appear at th e module? s output. whe n install ed into a cla ss ii eq uipment (wit hout grou ndin g ), spaci ng co nsi deratio n sh o u ld be given to the end -u se installatio n , as the spa c in g betwe en t he module a nd mounting su rface h a ve not been eval uat ed. the po we r m odule h a s extra-l o w voltag e (elv) o u tp uts whe n all input s are elv. this p o wer module i s no t internally fused. to a c hi eve optimum safe ty and system prote c tion, a n input line fu se is highly re co mmend ed. t he safety ag enci e s requi re a fus e with 1a maximum rating to be i n stalle d in the ungroun ded l ead. a lower rated fuse ca n be used b a s ed on the maxim u m inrush t r a n sie n t ene rgy and maximu m input cu rrent. soldering and cleaning considerations post sold er cl eanin g is usu a lly the final board assem b ly pro c e ss befo r e the board or system und ergo es ele c tri c al testing. inad equate cle a n i ng an d/or drying may lo we r the reli ability of a po we r m odule and se verely affect t h e finishe d circui t board asse mbly test. ad equate cl eani ng and/or d r y i ng is e s pe cially importa nt for un-e n cap s ula t ed and/o r open fra m e type p o we r module s . fo r assista n ce on ap pro p riat e sol deri ng a n d clea ning pro c ed ure s , ple a se conta c t delta? s techn i cal sup port team. design considera t ions input source impedance the imp eda n c e of the i n p u t sou r ce co nne cting to t h e dc/ dc po we r mod u le s wi ll intera ct wit h the mod u l e s and affect the stability. a lo w ac-imp eda nce in put so u r ce is re co mmen ded. if the so urce ind u cta n c e i s more th an a few h, we advise addin g a 10 to 100 f electrolytic cap a cit o r (e s r < 0. 7 at 100 khz) m ounted clo s e to the input of the module to i m prove the stability. lay out and emc considerations delta? s dc/dc po we r mod u les a r e d e si gned to o perate in a wide variety of system s and appli c at ions. for de si gn a s s i s t an ce with emc c o mp lia nc e and r e la te d pw b layout issue s , please co ntact delta?s te chni cal sup p o rt team. an ex ternal i nput f ilter mod u le is availa ble f o r easi e r emc compli an ce d e sig n . application note s to assist d e si gn ers in a d d r e s sing th ese i s sues are pe ndi ng to releas e. safet y considerations the power m odule mu st be installed in compli an ce with the spa c in g and sepa ration re quirements of the end-user? s safety agen cy standa rd, i.e., ul60 950, can/csa - c2 2.2 no. 6 095 0-00 and e n 6095 0: 200 0 and iec6095 0-19 99, if the syst em in which the po wer module is to be used must meet safety agency requi rem ents. basic i n sulat i on ba se d o n 75 vd c in put is p r ovid ed betwe en the input and o u tput of the module fo r the purp o se of a pplying in sul a tion re qui re ments wh en the input to this dc-to-dc co nverter i s ide n tified as t n v-2 or selv. an addition al evaluation i s neede d if the sou r ce is oth e r than t n v-2 or selv. whe n the input source i s selv circuit, the power module me ets selv (safety extra-lo w vol t age) requi rem ents. if the input sour ce is a ha zardou s volta ge whi c h i s grea ter than 60 v d c a nd le ss than o r eq ual to 75 vdc, for the module?s output to meet selv requi rem ents, all of the followin g must b e met: ds_s48se3 r30 5_1 2292 006 7
fea t ures descriptions over-cu rre nt protection the modul es include a n internal o u tp ut over-curre nt prote c tion ci rcuit, whi c h will endure cu rrent limiting for an unlimited duration d u r ing outp u t overloa d . if the output curren t exceed s the ocp set poi nt, the modul es will automati c ally shut dow n, and enter hiccup mo de or latc h mode, whic h is optional. for hi ccup mode, the m odule will try to resta r t af ter shutdown. if the overload condition still exists, the module will shut d o wn again. t h is resta r t trial will contin ue until the overload con d ition is correcte d. for lat c h m ode, the m odule will la tch off on ce it shutd o wn. th e latch i s re set by either cycling the in p u t power o r by togglin g the o n /off signal fo r one second. over-v olt age protection the module s include an internal outp u t over-volt a ge prote c tion circuit, whi c h monitors the volt age on the output termin als. if this volt age exceed s the over-volt a ge set point, the module will shut down, an d enter in hiccup mode o r latch mode, whi c h is optional. for hi ccup mode, the m odule will try to resta r t af ter shutdown. if the overload condition still exists, the module will shut d o wn again. t h is resta r t trial will contin ue until the overload con d ition is correcte d. for latch m ode, the m odule will la tch of f once i t shut do wn. th e latch is re set by either cycling the inp u t power o r by togglin g the o n /of f signal fo r one second. over-t emp e rature pro t ection the over-te m perature protecti on con s ist s of ci rcuitry that provide s protectio n from thermal damag e. if the temperature excee d s the ov er-tem perature thresh old the modul e will shut do wn, and ente r in hiccup m ode or latc h mode, whic h is optional. for hi ccup mode, the m odule will try to resta r t af ter shutdown. if the overload condition still exists, the module will shut d o wn again. t h is resta r t trial will contin ue until the overload con d ition is correcte d. for latch m ode, the m odule will la tch of f once i t shut do wn. th e latch is re set by either cycling the inp u t power o r by togglin g the o n /of f signal fo r one second. remote on /off the remote on/off feature on the mod u le can be either negative or p o sitive logic. neg a tive logic turns the module on durin g a logic lo w and off during a logic hig h . positive logic turns th e module s o n durin g a logic high a n d off durin g a logi c low. remote on/o f f can be co ntrolled by a n external switch betwe en the on/of f termin al and th e v i (-) termi nal. t he swit ch can be an open coll ector o r op en drain. for n egative logic if th e remote on/of f feature i s n o t use d , plea se sho r t the o n / of f pin to v i (-). fo r p o sitiv e logic if the r e mote on/of f f eature is not used, plea se leave the on/ of f pin floating. vi( + ) vi( - ) on /of f vo(+ ) tr i m vo (-) r lo ad vi( + ) vi( - ) on /of f vo(+ ) tr i m vo (-) r lo ad figure 1 6 : remote on/of f i m ple m ent atio n ds_s48se3 r30 5_1 2292 006 8
fea t ures descriptions (con.) output v o lt age adjustment to in cre a se or d e crea se the outp u t vol t age set poi n t, the modul es may be conne cted wit h an extern al resi sto r between the t r im pin and eit her the vo (+) or vo(-). the trim pin shou ld be left ope n if this feature is not used. r load vo ( + ) tr i m v o (-) r tr im -d o w n vi ( + ) vi ( - ) on / o f f r load vo ( + ) tr i m v o (-) r tr im -d o w n vi ( + ) vi ( - ) on / o f f vo ( + ) tr i m v o (-) r tr im -d o w n vi ( + ) vi ( - ) on / o f f figure 1 7 : circuit configur a t ion for trim-d ow n (decreas e output volt a ge) if the external resi stor i s co nne cted bet ween the t r im and v o (+) pi n s , the outp u t volt age set p o int de cre a se s (fig. 17 ). the external re si stor valu e req u ired to obt ai n an output volt age chang e from 3.3v to the desi r e d v o_adj i s defi ned a s : rtrim_down vo_adj 2.5 ? ( ) 5110 ? 3.3 vo_adj ? 205 0 ? ex. when t r i m -do w n -10 % v o_adj =3.3v (1 -1 0%)=2.9 7 v rtrim_down 2.97 2.5 ? ( ) 5110 ? 3.3 2.97 ? 2050 ? rtrim_down 5.228 10 3 = ohm vo (+ ) trim vo (- ) r loa d r tr i m - u p vi (+) vi (-) on/off vo (+ ) trim vo (- ) r loa d r tr i m - u p vi (+) vi (-) on/off figure 1 8 : circuit config urati on for trim-u p (i ncreas e outp u t volt ag e) if the external resi stor i s co nne cted bet ween the trim and v o (-) the output volt ag e set point in cre a ses (fig. 18). the exte rnal resi stor v a lue re qui red to obt ain an output volt ag e cha nge fro m 3.3v to the desired v o _ a d j is define d as: rtrim_up 2.5 5110 ? vo_adj 3.3 ? 2050 ? ex. when t r i m -up +10% v o_adj =3.3v (1 +1 0%)=3. 63v rtrim_up 2.5 5110 ? 3.63 3.3 ? 2050 ? rtrim_up 3.666 10 4 = ohm whe n u s ing trim functio n , the outpu t volt age of the module is u s ually incre a se d, which increases the po wer output of the module with the sam e outp u t current. care sh ould be t a ken t o ensure th at the maximum output power of the module remain s at or below the maximum rat ed power . ds_s48se3 r30 5_1 2292 006 9
thermal consi d era t i o ns therm a l man ageme n t is a n importa nt part of the syst em desi gn. to e n su re p r op er, reliabl e ope ration, suffici e n t cooli ng of th e po we r mod u le is nee de d over th e e n tire temperature range of the modul e. co n v ection co olin g is usu a lly the dominant mo d e of heat tran sfer. hen c e, the choi ce of eq uipment to chara c te rize the thermal p e rf orma nce of the po wer m odule i s a wind tunnel. thermal t esting setup delta? s dc/ dc po we r module s are chara c te rize d in heated verti c al wind tunn els t hat simu late the thermal environ ment s encou ntered in most electroni cs equipm ent. this type of equipm ent comm only u s e s vertically mou n ted circuit card s in cabi n e t rac ks in w h ich the power mo dule s are m o unted. the followi ng figure shows the wind tunnel cha r a c teri zati on setup. th e powe r mod u le is mount ed on a test pwb and is vertically po sitioned within the wind tun nel. the sp a c e b e twee n the neighb orin g pwb and the top of the power modul e i s const antly ke p t at 6.35mm (0.2 5? ?). n o t e : w i nd t unne l t e s t s e t up fi gur e d i mens i ons a r e i n m i l l i m e t e r s and ( i nc he s) 1 2 .7 ( 0 . 5 ?) mo du l e a ir f l o w 50. 8 ( 2. 0 ? ) f a ci ng p w b pw b ai r ve l o ci t y an d ambi e n t t e mper at u r e me asu red b e lo w th e m o d u l e figure 1 9 : win d tunne l test setup thermal derating heat ca n be remove d by increa sing airf low over the module. t o enhan ce system reli ability , the p o we r module should alway s be operate d belo w the maximum operatin g temperature. if the temperatu r e ex ceed s the maximum module tem p eratu r e, relia bility of the u n it may be af fected. thermal cur ves figure 2 0 : hot spot temp erat ure meas ured poi nt t he all o w ed maxi mu m h o t spot temp erature is defin ed at 1 1 4 s48s e3 r305 ( s tan dar d) o u tput cur r ent v s . am bi ent tem per atur e and ai r v e lo c i ty @vi n = 48v ( e ither o r i entation ) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6 0 65 7 0 75 8 0 85 natural co nv e c tion 200lfm 30 0lfm 100l fm 4 00lfm figure 2 1 : output current vs. ambi ent tempe r ature an d air v e locity @v in = 48v (either orient ati o n ) ds_s48se3 r30 5_1 2292 006 10
p i c k a n d p l a c e l o c a t i o n s u r f a c e - m o u n t t a p e & r e e l recommended p ad la yout (smd) ds_s48se3 r30 5_1 2292 006 11
leaded (sn/pb) process recommend temp . profile t i me ( sec. ) p r e- h eat t e m p . 140 ~18 0 c 60 ~1 20 sec. pe a k te m p . 21 0~2 3 0 c 5se c . ra m p -u p te mp . 0. 5~3. 0 c /s ec . t e mperatur e ( c ) 50 10 0 15 0 20 0 25 0 30 0 60 0 1 20 18 0 24 0 2n d r a m p - up tem p . 1. 0 ~ 3. 0 c /sec . ov er 20 0 c 40 ~5 0s ec. co olin g do wn ra te < 3 c / s e c . note : the te mpe r a t ure re fe rs to the p i n of s4 8 se, me asure d on t h e pi n +v out jo int . lead free (sac) pro c ess re commend temp . profile temp . ti me 15 0 20 0 10 0~14 0 s e c . t i me lim i te d 9 0 sec . ab ov e 21 7 21 7 pr eh e a t ti m e ram p up ma x. 3 /s ec . ram p dow n ma x. 4 /s e c . peak tem p . 24 0 ~ 24 5 25 note : the te mpe r a t ure re fe rs to the p i n of s4 8 se, me asure d on t h e pi n +v out jo int . ds_s48se3 r30 5_1 2292 006 12
mechanical dra w ing surface-mount module through-ho le module pin no. name function 1 2 3 4 5 6 +v in -v in on/of f (optional) -v out t r im (optional ) + v out positive i nput v o lt ag e neg a tive in put volt ag e remote on/of f (optional) neg a tive o u tpu t volt age output volt age trim (optional) positive o u tput volt age all pi ns are co pper w i t h t i n pl ating. ds_s48se3 r30 5_1 2292 006 13
ds_s48se3r305_12292006 14 part numbering system s 48 s e 3r3 05 n r f a product type input voltage number of outputs product series output voltage output current on/off logic pin length/type option code s - small power 48- 36v~75v s - single 1x1, 5a 3r3 - 3.3v 05 - 5a n - negative p - positive e - no remote on/off control pin r - 0.170? n - 0.145? k - 0.110? m - smd f- rohs 6/6 (lead free) a - no trim pin b - with trim pin model list model name input output eff @ 100% load s48se3r305nrfa 36v~75v 0.6a 3.3v 5a 87.0% S48SE05003NRFA 36v~75v 0.5a 5.0v 3a 87.0% s48se12001nrfa 36v~75v 0.5a 12v 1.3a 88.0% s48se15001nrfa 36v~75v 0.5a 15v 1a 87.0% note: 1. default remote on/off logic is negative; 2. default pin length is 0.170?; 3. default otp and output ovp, ocp mode is auto-restart. 4. default is no trim pin; 5. for different option, please refer to part numbering system above or contact your local sales office. contact : www.delta.com.tw/dcdc usa: telephone: east coast: (888) 335 8201 west coast: (888) 335 8208 fax: (978) 656 3964 email: dcdc@delta-corp.com europe: phone: +41 31 998 53 11 fax: +41 31 998 53 53 email: dcdc@delta-es.com asia & the rest of world: telephone: +886 3 4526107 ext 6220 fax: +886 3 4513485 email: dcdc@delta.com.tw warranty delta offers a two (2) year limited warrant y. complete warranty information is list ed on our web site or is available upon request from delta. information furnished by delta is believed to be accurate and re liable. however, no responsibility is assumed by delta for its use, nor for any infringements of patents or other rights of thir d parties, which may result from its use. no license is grante d by implication or otherwise under any patent or patent rights of delta. delta reserves the right to revise these specifications at any time, without notice .

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