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` feat ure s high ef ficiency : 8 6 .5% @1. 2 v/50 a size: 58.4mm x 22.8mm x 9.5m m (2.30?x0.90 ? x0.3 7?) industr y st an dar d pin out fixed f r equenc y operation input uvl o , out put otp , ocp , ovp monotonic st artu p into normal an d pre-biased loads secondar y side c ontrol, ver y fast t r ansient response 2250v isolation and basic insulation no minimum load required no negative curr ent during po wer or enable on/of f iso 9001, t l 90 00, iso 14 001, qs 9000, o h sas 1800 1 certified manufact u ring facility ul/cul 60950 ( u s & canada ) re cognized, and tuv (en 609 50) certified ce mark meet s 73/23/eec and 9 3 /68/eec directive delphi series e48sh, 120w eighth brick family dc/dc power modules: 48v in, 1.2v/50a out the delp hi s e rie s e48s h eighth bri ck, 48v inp u t, sin g le outp u t, isolated dc/ dc co nverters are th e latest offering from a world lead er in powe r system s tech nology and manufa c turi n g D delta electronics, inc. this prod uct family is available in eithe r a t h rou g h - hole or surfa c e - m ounted packa ge and provide s up to 120 watts o f power or 5 0 a of output c u rren t (1.2v an d bel ow) in a n ind u stry stand ard footpri n t an d pino ut. the e48sh conve r ter o p e r ates from an input volt age of 36v to 75v and is availa ble in output voltag es from 1.0v to 15v. efficien cy is up to 86.5% for 1.2v output at 50a full load. with creat ive de sign technolo g y and optimization of compon e n t placeme n t, these co nverters po ssess outst andin g electri c al and thermal perf o rmance, as well as extremely high reliability unde r highly stre ssful operating conditio n s. a ll models are fully protected from ab norm a l input/outp u t voltage, current, and tem peratu r e co n d itions. the delphi serie s co nve r ters meet al l safety requi reme nts with basi c insul a tion. options positive on/of f logic short pin lengths available external s y nchro n ization output ovp latch mode output ocp latch mode heat spreade r applica t ions t e lecom/dat a co m wir e less netw orks optical net w ork equipment server and dat a s t orage industrial/t e st eq uipment da t a sh e e t ds_e48sh1r2 5 0_0226200 7
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 E48SH1R250 (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 7 5 v d c t r ansien t (100m s) 100ms 100 vdc operati ng t e mpera t ure refer to figure 21 for mea s uring poin t -40 130 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 2 3 vdc max i mu m i npu t current 100% lo ad, 36v i n 2.3 a no-load inpu t curr ent 50 ma of f conv erter inpu t current 3 ma i n r u s h cu rr e n t (i 2 t) 1 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 20 ma inpu t v o lt ag e rippl e rejection 120 hz 50 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 1.188 1.20 1.212 vdc outpu t v o lt age reg u lation ov er load io= i o , m i n to io ,m ax 3 10 mv ov er line v i n=36v to 75v 3 10 mv ov er t e mperature t c =-40c to 85c 15 mv t o t a l ou tpu t v o lt ag e range ov er sample loa d , li ne and temp erature 1.176 1.224 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 50 1 10 mv rms full load , 1f cer a mic, 10f t a nt alum 10 20 mv operati ng outpu t current range 0 50 a outpu t dc cur r ent- l imit in ception outpu t v o lt age 1 0 % low 105 135 % 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.m ax to 75% io .m ax 25 m v negativ e s t ep cha nge in ou tpu t curr ent 75% io.m ax to 50% io .m ax 25 mv settling t i me (w ithi n 1% v o ut nominal) 100 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 13 ms s t art-u p t i m e , f r o m inpu t 13 ms max i mu m outpu t c a p a cit a n c e full load ; no ov ersh oot of v o ut at st ar tu p 40000 f effi ci ency 100% lo ad 86.5 % 60% loa d 8 9 . 5 % 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 240 kh z on/off control, n egativ e remote on /o f f logi c logic low (module on) v on/of f at io n/o f f=1.0ma 1.2 v logic high (mo dule o f f) v on/of f at io n/o f f=0.0 a 3 50 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 at io n/o f f=1.0ma 1.2 v logic high (mo dule on) v on/of f at io n/o f f=0.0 a 3 50 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 1 ma leakage curren t (for bo th remote on /o f f logi c) logic high, v on/of f=15v 50 ua outpu t v o lt age t r i m range acro ss pin s 9 & 5 , pout Q max rated pow er -20 10 % outpu t v o lt age re mote s ense range pout Q max rated pow er 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 1 18 130 % genera l specifica t ions mtbf io=80% of io, max ; 300lfm @25 4.66 m hour s we i g ht 25 grams ov er-t emperature shut dow n refer to figure 21 for mea s uring poin t 135 c e48sh1 r2 50 _022 6200 7 2
electri cal characteristi cs cur ves e48sh1 r2 50 _022 6200 7 3 figure 1 : ef ficiency vs. lo ad c u rrent for mi ni mu m, n o m in al, 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. 0 0. 5 1 1. 5 2 2. 5 3 30 34 38 42 46 50 54 58 62 66 70 74 78 i n p u t vo l t ag e(v) i n put current (a) figure 3 : t y pical f u ll l o a d inp u t charac teristics at ro o m temp eratur e
electri cal characteristi cs cur ves for negative remote on/off logic figure 4 : t u rn-on trans ie nt at z e ro loa d current (5 ms/div). v i n= 4 8 v . t op t r ace: v out, 1v/ d iv; bottom t r a c e: on/of f input, 5v/div f i g u r e 5 : t u rn-on transie nt a t full ra ted load current (const ant current lo ad) (5ms/div). v i n= 48v .t op t r ace: v out, 1 v/div; bottom t r ace: on/off input, 5v/div for input v o lt age s t art up figure 6 : t u rn-on transi ent at z e ro lo ad current (5 ms/div). v i n= 4 8 v . bottom t r ace: v out, 1v/div , t op t r ace: in put voltage , 5v/div f i g u r e 7 : t u rn-on transie nt at full ra ted load current (const a n t current lo ad) ( 5 m s /div). v i n= 48v . bottom t r ace: v o ut, 1v/div; t op t r ace: inp u t volt age,5v/div e48sh1 r2 50 _022 6200 7 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 cap: 10 f , t ant alu m ca p a citor and 1 f cera mic cap a citor . t r ace: v out (20 m v/div , 10 0us/div ) , scop e meas ure m e n t should be ma de usin g a bnc cabl e (len gth shorte r than 20 in ches). positio n the loa d betw een 51 mm to 76 mm (2 inch es to 3 inches) fro m the mo du le. . f i g u r e 9 : output volt a ge re spons e to ste p -cha nge in l oad current (50 % -7 5% of io, max; di/d t = 0.1a/ s) . load cap: 1 0 f , t ant alu m cap a citor and 1 f ceramic cap a citor . t r ace: v o u t (20 m v/div , 10 0us/div ) , scop e me asur e m e n t shoul d be ma d e usin g a bnc c abl e (len gth sh orte r than 2 0 in ches). positio n the loa d betw een 51 mm to 76 mm (2 inc hes to 3 inch es) from th e mo du le. . 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 ab ove f i g u r e 1 1 : inp u t t e rmina l ri p p le curre nt, i c , at full rated output current a nd n o m i nal inp u t voltage 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/ d iv , 2us/div). e48sh1 r2 50 _022 6200 7 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 , 2u 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 0 0. 5 1 1. 5 2 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 output current (a) output voltage (v) 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= 50a)(2 0 mv/d iv , 2us/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. figure 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. e48sh1 r2 50 _022 6200 7 6
design considera t ions input source impedance the impe dan ce of the inp u t sou r ce co nne cting to the dc/ dc po we r mod u le s will intera ct with the modul es and af fect the st ability . a low ac-i mpe dan ce input source is recomme nde d. if the source ind u ct an ce is mo re tha n a few h, we advise addi n g a 1 0 to 1 0 0 f ele c trol ytic ca p a cit o r (e s r < 0. 7 ? at 100 khz) mounted clo s e to the input of the module to imp r ove the st abili ty . lay out and emc considerations delt a? s dc/ dc po we r mo dule s are de sign ed to op erate in a wide va ri ety of systems and appli c a t ions. for de sign assist an ce with emc complian c e a nd related pwb layout issue s , please cont act delt a? s tech nical sup port team. an external in put filter modul e is availabl e for easi e r emc compli an ce desi gn. application note s to assist d e si gn ers in ad dressing th ese issue s a r e p e n d ing relea s e. safet y considerations the po we r m odule mu st b e inst all ed in compli an ce with the sp a c in g and sep a ration requi rement s of the end-user ? s safety agen cy st and ard, i.e., ul60 950, can/csa - c2 2.2 no. 609 5 0 -00 a nd en6095 0: 2000 and iec6095 0-19 99, if the system in which the powe r mo dule is to be used must meet sa fety agency requireme nt s. basic i n sulation ba sed o n 75 vdc in put is provid ed betwe en the input and output of th e module fo r the purp o se of a pplying in sul a tion req u ire m ents when the input to this dc-to - dc conv erter i s identif ied as t n v-2 or selv. an a dditional eval uation is nee ded if the so urce is other tha n tnv-2 or selv. whe n the inp u t source i s sel v circuit, the powe r mod u le meet s sel v (safety extra - low volt ag e) requi rem ent s. if the input sou r ce i s a haza r dou s volt age which is g r e a ter than 60 vdc and le ss tha n or equ al to 75 vd c, for the module? s out put to meet sel v require ment s, all of the following must be met: the inp u t so urce mu st b e insulated f r om the a c mains by reinforced or double insulation. the inp u t terminals of the module are not ope rator acce ssi ble. if the metal base p late is g r oun ded ?3 on e vi pin and one vo pin sh all also b e ground ed. a selv relia bility test is condu cted on the syste m whe r e the m odule is u s e d ?3 in combinati on with the module, to ensure that under a singl e fault, hazard o u s voltage doe s no t appear at the module? s output. whe n install ed into a cla ss ii equipment (without grou ndin g ), spaci ng co nsi deratio n sho u ld be given to the end-use installatio n , as the spa c in g betwee n the module a nd mounting su rface h a ve not been eval uat ed. the po wer m odule ha s extra-l o w voltag e (elv) outp u ts whe n all input s are elv. this po we r module is no t internally fu sed. to achi eve optimum safe ty and system prot ection, a n input line fu se is highly reco mmend ed. the safety agenci e s re qui re a norm a l-bl ow fuse with 20a maximum rating to be installe d in the ungroun de d lead. a lower rate d fuse can be use d base d on the maximum inru sh transi ent energ y and maximu m input cu rre nt. soldering and cleaning considerations post sol d e r cl eanin g is u s u a lly the final board a s sem b ly pro c e ss before the boa rd o r system u nde rgoe s el ectri c al testing. inad e quate cleani n g and/o r dryin g may lower t he reliability of a powe r mo dule and se verely af fect the finishe d circui t board asse mbly test. adequate cl eani ng and/or dryin g is e s pe cially i m port ant for u n -en c a p sulat ed and/or o pen f r ame type po wer m odule s . for assi st an ce on ap propri a te sold eri n g and clea ni ng p r o c edu res, plea se cont a c t delt a? s technical su ppo rt team. e48sh1 r2 50 _022 6200 7 7
fea t ures descriptions over-cu rre nt protection the e48s h module s i n clu de an internal out put over-cu r rent prote c tion circuit, which wi ll endure cu rrent limiting for an unlimited du ration du rin g o u tput overl o a d . whe n the o u tput cu rrent e x ceed s the o c p set p o int, in option code a, the current limit functi on will work by initially redu ce duty cycl e of the modul e, the unit wil l go out of re gula t ion but rem a ins i n safe ope rating a r ea before the ou tput drop s bel ow 50%. wh en output dro p s belo w 50%, the modul es will automati c ally sh ut do wn and ente r hi ccup m ode. in option code b (available f o r 1.2v, 1.8v, and 2.5v), wh en the output current ex ce eds the ocp set point, the m odule s will i mmediately shut down and e n ter hiccu p mo de. duri ng hiccu p , the modules will try to resta r t after 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. 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 do wn a nd re st a r t af ter 200ms. lat ch-of f mod e is optional. und e r lat c h of f m ode the over-volt a ge latch i s re set by eithe r cyclin g the in put 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 module will shut do wn. the module will try to rest art af ter shut down. if the over-tem perature co ndition still exist s during rest art, the module will shut do wn again. thi s rest art trial will contin ue until the temperat ure is within specifi c ation. remote on /off the remote o n /off feature on the mo dul e ca n be eith er negative or positive logi c. negative logic tu rn s the module o n du ring a lo gic lo w and off du ri ng a logi c hig h . positive logi c turns th e m odule s on du ring a lo gic h i gh and off durin g a logic lo w. remote on/of f can b e cont rolled by an external swit ch betwe en the on/of f termin al and the v i (-) termi nal. the swit ch can be an open coll ector o r op en drain. for ne gative logic if the remote o n /of f feature is n o t use d , plea se sho r t the on /of f pin to v i (-). for positi v e logic if the remote on/of f feature is n o t used, pl e a se leave the on/ of f pin to floating. e48sh1 r2 50 _022 6200 7 8 vo(+) vi(+) vo(-) sense(-) sense(+) vi(-) on/off figure 1 6 : remote on/of f i m ple m ent atio n remote se nse remote sen s e comp en sat e s for volt ag e dro p s o n the output by sen s ing th e a c tu al output volt age at th e po int of load. the volt age bet wee n the re mote se nse pins and the outp u t terminals mu st not exceed the outp u t volt age sen s e rang e given here: [v o(+) ? v o (?)] ? [sense(+) ? sense(?)] 10% vo u t this limit includ es any increa se in volt age due to remote se nse co mpen sat i on an d outp u t volt age set point adju s tm ent (trim). vi(-) vi(+) vo(-) vo(+) sense(+) sense(-) resistance contact contact and distributio n losses figure 1 7 : ef fective circ uit c onfig uratio n fo r remote se ns e oper ation if the remote sen s e featu r e is not used t o regul ate the output at the point of loa d , plea se con n e c t sense(+) to v o (+) an d sense(? ) to v o (?) at the mo dule. the output volt age ca n be increa sed by both the remote sen s e and the trim; however , the maximum increa se i s th e larger of eit her th e remot e se nse o r th e trim, not the sum of both. whe n usi ng remote sen s e and trim, the output volt ag e of the mod u le is u s u a lly increa sed, whi c h incre a ses t he power outpu t of the mo dule with the same out put c u rrent. care sh ould be t a ken to ensu r e that the maximum output po we r doe s n o t e x ceed th e m a ximum rate d power .
fea t ures descriptions (con.) output v o lt age adjustment (trim) 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 bet wee n the trim pin and eithe r the sense(+ ) or sense(-). the trim pin sho u ld be left open if this fe ature is n o t used. figure 1 8 : 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 sense (-) pin s , the output vol t age set poi nt decrea s e s (fig.18). the external resi stor valu e requi re d to obt ain a percent age of output volt ag e cha nge % is define d as: () ? ? ? = ? k down rtrim 2 . 10 511 ex. when t r i m -do w n -10 %( 1.2v0.9 =1.08v) () ? = ? = ? k down rtrim 9 . 40 2 . 10 10 511 figure 1 9 : 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 sense (+) the o u tput volt age set point increa se s (fig. 19 ). the external re si stor value req u ired to obt ai n a percent age output volt ag e cha nge % is defined as: () 5. 1 1 v o ( 100 ) 511 10. 2 0. 6 rt r i m u p k + ? ? =? ? ? ? ? ex. when t r i m -up +10% (1 .2v1.1 = 1.32 v) () 5. 11 1 . 2 ( 1 0 0 10 ) 511 10 . 2 51 0. 6 1 0 1 0 rt r i m u p k + ? =? ? = ? the o u tput vo lt age can be i n crea sed by both the rem o te sen s e a nd th e trim, howe v er the maximum increa se is the larger of either th e re mote sen s e o r the tri m , not the sum of both. whe n usi ng remote sen s e and trim, the output volt a ge of the module is usually i n cr ea sed, wh ich in crea se s the power outpu t of the module with the same out put c u rrent. 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 . frequenc y sy nch ronization this product family can be s y nchronized with ex ternal clo ck signal to the trim pin. this reduces syste m noise and interference in multiple conv erter systems. e48sh1 r2 50 _022 6200 7 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 2 0 : w i nd tunne l test setup thermal derating heat can be removed by in cre a si ng ai rflow over the module. the hotte st point tempe r ature of the module i s 12 5 . t o enha nce syst em relia bility; the power m odule sho u ld alway s be operated belo w the maximum operating temperature. if the temperat ure ex cee d s t he maximum module tem p eratu r e, reliability of the unit may be af fected. thermal cur ves figure 2 1 : case temperatur e meas ure m ent locati on. pin loc a tions a r e for referenc e only . the allowed maxim u m hot spot tem p eratu r e is defined at 130 e 48sh 1 r 2 50( st andar d) o u t put c u r r ent vs . a m bi ent tem per at ur e and ai r v e l o ci t y @ v i n = 48v ( t r ansv e r s e o r i ent at i on) 0 5 10 15 20 25 30 35 40 45 50 30 3 5 4 0 45 50 55 6 0 6 5 7 0 75 80 85 a m b i e n t t e m p er a t ur e ( ) o u t p u t c u r r e n t( a ) na t u r a l c onvec t i on 100l fm 200lf m 3 00lfm 400l fm 50 0lf m 600 lfm figure 2 2 : output current vs. ambi ent tempe r ature an d air v e locity @v in = 48v (t ransvers e orien t ation) e48sh1 r2 50 _022 6200 7 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) e48sh1 r2 50 _022 6200 7 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 e4 8 s h, 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 e4 8 s h, me asure d on t h e pi n +v out jo int . e48sh1 r2 50 _022 6200 7 12
mechanical dra w ing (w ithout hea t spreader) e48sh1 r2 50 _022 6200 7 13 surf ace-mount module t h r o u g h - h o l e m o d u l e pin no. name function 1 2 3 4 5 6 7 8 +v in o n / o f f e o lt ag e l t age -v in -v out - s e n s tr i m +sense + v out positive i nput v r e m o t e o n / o f f neg a tive in put volt ag e neg a tive o u tpu t v o neg a tive remot e s e n s e output volt age trim positive remote sense positive o u tput volt a g e
mechanical dra w ing (w ith hea t spreader) through-hole module e48sh1 r2 50 _022 6200 7 14
E48SH1R250_02262007 15 part numbering system e 48 s h 1r2 50 n r f a type of product input voltage number of outputs product series output voltage output current on/off logic pin length option code e- eighth brick 48-36v~75v s- single h-50a series 1r2 - 1.2v 50 - 50a n- negative p- positive r- 0.170? n- 0.145? k- 0.110? m- smd f- rohs 6/6 (lead free) a- standard functions, with output ocl b- standard functions, with output ocp (available for 1.2v, 1.8v, and 2.5v) h - with heat spreader model list model name input output eff @ 100% load E48SH1R250nrfa 36v~75v 2.3a 1.2v 50a 86.5% e48sh1r540nrfa 36v~75v 2.2a 1.5v 40a 89% e48sh1r840nrfa 36v~75v 2.7a 1.8v 40a 90% e48sh2r535nrfa 36v~75v 2.9a 2.5v 35a 89.5% e48sh3r330nrfa 36v~75v 3.6a 3.3v 30a 92% e48sh05020nrfa 36v~75v 3.7a 5.0v 20a 90% e48sh12010nrfa 36v~75v 4.3a 12v 10a 93.5% default remote on/off logic is negative and pin length is 0.170? for different remote on/off logic and pin length, 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: telephone: +41 31 998 53 11 fax: +41 31 998 53 53 email: dcdc@delta-es.tw asia & the rest of world: telephone: +886 3 4526107 x 6220 fax: +886 3 4513485 email: dcdc@delta.com.tw warranty delta offers a two (2) year limited warran ty. complete warranty information is listed 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 third parties, which may result from its use. no license is granted 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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