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feat ure s high ef ficiency : 92% @ 1 2 v/5a size: 58.4mmx 2 2 .8mmx 8.3 5 mm (2.30?x0.90 ? x0.33 ?) s t andard footp r in t industr y st an dar d pin out fixed f r equenc y operation: 35 0khz input uvl o , out put ocp , ovp , otp 2250v isolation and basic insulatio n no minimum load required 2:1 input volt age range iso 9001, t l 90 00, iso 14 001, qs9000, ohsas1800 1 certified manufactu ring facility ul/cul 60950 ( u s & canada ) recognized, and tuv (en6 0950) certified ce mark meet s 73/23/eec and 93/68/eec direct ive delphi series e48sr, 66w eighth brick family dc/dc power modules: 48v in, 12v/5a out the delphi s e rie s e48s r eighth bric k, 48v input, si n g le output, isolated dc/ dc co nverter i s th e l a test of feri ng from a wo rl d lead er i n power system s te ch nology a nd manufa c turi n g -- delt a electro n ics, inc. this prod uct famil y provides u p to 66 watt s o f power o r 25 a of output current (1.8v and bel ow) in an ind u stry st a nda rd footprint. with creative d e sig n techn o logy a nd optimization of com p o nent pla c eme n t, these co n v erters posse ss out st andin g elect r ical an d thermal perfo rm ances, as well as extremely hig h relia bility under highly stressful op erating conditio n s. all model s a r e f u lly prote c ted from a bno rmal input/out put volt age, curre n t, and tempe r at ure conditio n s . the del phi serie s co nverters me et all safe ty requi rem ent s with ba sic in sulation . options positive on/of f logic short pin lengths available smd pin applica t ions t e lecom/dat a com wir e less netw orks optical net w ork equipment server and dat a s t orage industrial/t e sting equipment d a t a s h eet ds_e4 8 sr1 2 0 05_ 03 022 00 6
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 e48sr120 05 (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 ansien t (100m s) 100ms 100 vdc operati ng t e mpera t ure refer to the fig . for the mea s uring poi nt -40 109 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 1500 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 2.2 a no-load inpu t curr ent 80 ma of f conv erter inpu t current 4 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 25 ma inpu t v o lt ag e rippl e rejection 120 hz 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 1 .808 12.000 12.192 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 60 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 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 80 120 mv rms full load , 1f cer a mic, 10f t a nt alum 25 35 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 10 140 % 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 180 mv negativ e s t ep cha nge in ou tpu t curr ent 75% io.m ax to 50% io .m ax 180 mv settling t i me (w ithi n 1% v o ut nominal) 200 us t u rn-on t r an sien t s t art - up t i me, from on/of f cont rol 6 ms s t art-u p t i m e , f r o m inpu t 6 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 2000 f effi ci ency 100% lo ad 91.0 % 60% loa d 90.5 % 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 1500 vdc isol ation re sist ance 10 m ? isol ation cap a cit a n c e 1500 pf fe a t ure ch a r acteri s ti cs sw itching freq uen cy 350 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 0.7 v logic high (mo dule o f f) v on/of f at io n/o f f=0.0 a 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 at io n/o f f=1.0ma 0.7 v logic high (mo dule on) v on/of f at io n/o f f=0.0 a 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 1 ma leakage curren t (for bo th remote on /o f f logi c) logic high, v on/of f=15v 100 ua outpu t v o lt age t r i m range acro ss pin s 9 & 5 , pout Q max rated pow er -10% 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 14.4 v genera l specifica t ions mtbf io=80% of io, max ; t c =40c 2.70 m hour s we i g ht 1 9 . 6 g r a m s ov er-t emperature shut dow n refer to fig. 21 for the mea s uri ng p o in t 1 15 c ds_e48s r1 2005 _030 220 06 2
electri cal characteristi cs cur ves figure 1 : ef ficiency vs. loa d current for min i mu m, no mi nal , and max i mu m in put volt age at 2 5 c f i g u r e 2 : pow e r dissip a ti o n vs. load c u rrent for mi ni 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 30 35 40 45 50 55 60 65 70 75 inp u t volt age(v) i n put curre nt ( a ) figure 3 : t y pical ful l lo ad inp u t cha r acteristics at room temp eratur e 55 60 65 70 75 80 85 90 95 0. 5 1 . 0 1. 5 2 . 0 2. 5 3 . 0 3. 5 4 . 0 4. 5 5 . 0 o u t p u t cu rr e n t ( a ) efficiency (%) 75v i n 48v i n 36v i n 2. 0 2. 5 3. 0 3. 5 4. 0 4. 5 5. 0 5. 5 6. 0 6. 5 7. 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 curre n t ( a ) power di ssi pati on ( w ) 75v i n 48v i n 36v i n ds_e48s r1 2005 _030 220 06 3
electri cal characteristi cs cur ves for negative remote on/off logic figure 4 : t u rn-on transie nt at full ra ted loa d current (resi stor loa d ) (2 ms/div ). v i n= 48v . t op t r ace: v o ut, 5v/div; bo ttom 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 (2 ms/ d iv). v i n= 4 8 v . t op t r ace: v o ut, 5v/div; botto m t r ace: on/of f input, 5v/div for positive remote on/off logic figure 6 : t u rn-on transie nt at full ra ted loa d current (resi stor load) (21 ms/div). v i n= 48v . t op t r ace: v o ut, 5v/div; bot t om t r ace: on/off inpu, 5v/div f i g u r e 7 : t u rn-on trans ient at z e ro lo ad current (2 ms/ d iv). vi n = 4 8 v . t op t r ace: v out, 5v/div; bottom t r a c e: on/of f in put, 5v/div 0 0 0 0 0 0 0 0 ds_e48s r1 2005 _030 220 06 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%-7 5% of io, max; di/d t = 0.1a/ s ) . load cap: 10 f t a nt al um cap a cit o r and 1 f cer a mic cap a cit o r . t o p t r ace: v out (0.2v/div , 200 us/div), bo tto m t r ace: iout (1a/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 oad current (75%-50%-75% of io, max; di/d t = 2.5a/ s ) . load c ap: 47 f , 35 m ? e s r soli d el ectr olytic cap a citor and 1 f cer a mic cap a cit o r . t op t r ace: v out (0.2v/div ,,200 us/d iv ) , bottom t r ace: iout (1a/div). scope meas ur em ent shou ld be made usi n g a bnc ca ble ( l e ngth sh orter th an 2 0 inc hes). positio n the l oad betw een 51 mm to 76 mm ( 2 inches to 3 inches) from the 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 0 0 0 0 ds_e48s r1 2005 _030 220 06 5
electri cal characteristi cs cur ves figure 1 1 : input t e rmi n a l rip ple c u rrent, i c , at full rated out put current an d no mi nal i nput voltage w i th 12 h source i m p e d a n ce and 3 3 f e l ect r olytic cap a c i to r (500 ma/ d iv ,2 us/div) f i g u r e 1 2 : in put reflected ri ppl e current, i s , through a 12 h source in ducto r at no mi nal in put volt a ge an d rated lo ad c u rrent (20 ma/ d iv ,2us /div) strip copper vo(-) vo(+) 10u 1u scope resistiv e load figure 1 3 : ou tput volt age no ise and ri ppl e me asur e m ent test setup 0 0 ds_e48s r1 2005 _030 220 06 6
electri cal characteristi cs cur ves 0. 0 2. 0 4. 0 6. 0 8. 0 10. 0 12. 0 14. 0 012345678 loa d curre n t (a ) output vol t age ( v ) v i n=48 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)(50 mv/div , 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. f i g u r e 1 5 : output volt a ge vs. load curr e n t s how ing ty pical current li mit cu rves and co nve r ter shut dow n poi nt s 0 ds_e48s r1 2005 _030 220 06 7
design considera t ions input source impedance the imp eda n c e of the inp u t sou r ce co nne cting to t he dc/ dc po we r mod u le s wi ll intera ct wit h the mo dul es and af fect the st ability . a lo w ac-impe d a n ce inp u t sou r ce is re com m en ded. if the so urce indu ct a n c e is m o re th an a few h, we advise addin g a 10 to 100 f electrolytic ca p 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 st ability . lay out and emc considerations delt a? s dc/ dc powe r mod u les are desi gned to operate in a wide vari ety of systems and appli c at ions. for de si gn as sist an ce w i t h e m c co mplian c e a n d relat e d p w b layout issue s , please cont act delt a? s te chni cal sup p o rt team. an external input filter module is available for easi e r emc compli an ce d e sig n . application n o tes to assist de sign ers in add re ssing the s e issues are pendi ng relea s e. safet y considerations the po we r m odule m u st b e inst alled in compli an ce with the sp aci n g and se p a ration req u irement s of the end-user ? s safety agen cy st and ard, 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 ent s. 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 in p u t sou r ce i s s e l v ci rcuit, the po wer mod u le meet s sel v (safety extra-low volt age ) requi rem ent s. if the input sou r ce i s a ha za rdou s volt age whi c h is grea ter than 60 vdc and less tha n or equal to 75 vdc, for the module? s out put to meet sel v requi re ment s, all of the following must be met: 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 ?3 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 ?3 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 norm a l-bl ow f u se with 5a maximum rati ng to be in sta lled in the ung rou nded le ad. a lowe r rate d fuse can be u s ed based on th e maximum inru sh tra n si ent energy and maximum input current. 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. inade quate clea nin g and/or dryin g may lower the reliability of a power module and severely 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 ope n frame type po wer mod u les. for a s sist an ce on app rop r ia te solde r ing and cle ani ng procedu res, plea se cont a c t delt a? s technical su ppo rt team. ds_e48s r1 2005 _030 220 06 8
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 down (hiccup mode). the modules will try to restart after shutdown. if the overload condition still exi s ts , the module will shut down again. thi s restart trial wi ll continue u n til 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 wil l shut do wn (hi c cup mo d e ). the modul es will try to rest art af ter sh ut down. if the fault con d ition still exist s , the module will shut down ag ain. this re st a r t trial will contin ue until the fault conditio n is corre c ted. 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. ds_e48s r1 2005 _030 220 06 9 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 increa se o r decrea s e th e output voltage set point, the module s ma y be connected with an external re si stor betwe en the trim pin and either th e sense(+) or sense(-). the trim pin sho u ld b e l e ft open if this feature is n o t use d . figure 1 8 : circuit configur a t ion for trim-d ow n (decreas e output volt a ge) if the external re sisto r is con n e c ted b e twee n the t r im and sense (-) pin s , the outp u t volt age set p o int decrea s e s (fi g . 26). the e x ternal re sist or value re qu ired to obt ain a p e rcent a ge of output volt ag e cha nge % is defined a s : () ? ? ? ? ? ? ? ? ? = ? k down rtrim 2 . 10 511 ex. when t r i m -do w n -10 % (12v0.9=1 0.8v) () () ? = ? ? ? ? ? ? ? ? = ? k 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 re sisto r is conn ecte d b e twee n the trim and sense (+) the output volt age se t point incre a se s (fig. 27). the external re si stor value re quire d to obt ain a percent age o u tput volt age cha nge % is define d as: () ? ? ? ? ? ? + = ? k vo up rtrim 2 . 10 511 225 . 1 ) 100 ( 11 . 5 ex. when t r i m -up +10% (1 2 v1.1 = 13.2 v ) () ? = ? ? + = ? k up rtrim 3 . 489 2 . 10 10 511 10 225 . 1 ) 10 100 ( 12 11 . 5 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 . ds_e48s r1 2005 _030 220 06 10
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 remove d by increa sing ai rf low over the module. the hotte st point tempe r ature of the module i s +1 09 c.t o enha nce syst em reliability , the power m odule shoul d always be ope rated belo w the maximum ope rating tempe r ature. if the temperature 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 : 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 10 9 e48sr 12005( s t andar d) o u t put c u r r en t v s . a m bi ent t e m per at ur e and a i r vel o ci t y @ v i n = 48v ( t r ansv e r s e o r i ent at i on) 0. 0 0. 5 1. 0 1. 5 2. 0 2. 5 3. 0 3. 5 4. 0 4. 5 5. 0 5. 5 40 4 5 5 0 5 5 60 6 5 70 7 5 80 8 5 a m bi e n t t e m p er a t u r e ( ) o u t p u t c u r r e n t( a ) na t u r a l c onvect i o n 1 00lfm 200l f m 300lf m 4 00l fm figure 2 2 : output current vs. ambi ent tempe r ature an d air velocity@ v in= 48v(t ransv e rse orient atio n) ds_e48s r1 2005 _030 220 06 11
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 - mount t a pe & reel recommended p ad la yout (smd) ds_e48s r1 2005 _030 220 06 12
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 r, 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 r, me asure d on t h e pi n +v out jo int . ds_e48s r1 2005 _030 220 06 13
ds_e48s r1 2005 _030 220 06 14 surface-mount module through-hole module pin no. mechanical dra w ing name function 1 2 3 4 5 6 7 8 +v in o n / o f f s e o lt ag e n / o f f g e -v in -v out - s e n tr i m +sense + v out positive i nput v r e m o t e o neg a tive in put volt ag e neg a tive o u tpu t v o l t age neg a tive remot e s e n s e output volt age trim positive remote sense positive o u tput volt a
ds_E48SR12005_03022006 15 part numbering system e 48 s r 120 05 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 48v s- single feature 120- 12v 05- 5a n- negative (default) p- positive r - 0.170? (default) n- 0.145? k- 0.110? m- smd f- rohs 6/6 (lead free) a- standard functions model list model name input output eff @ 100% load e48sr1r225nrfa 36v~75v 1.3a 1.2v 25a 88.0% e48sr1r525nrfa 36v~75v 1.5a 1.5v 25a 89.5% e48sr1r825nrfa 36v~75v 1.8a 1.8v 25a 90.5% e48sr2r520nrfa 36v~75v 1.9a 2.5v 20a 89.0% e48sr3r320nrfa 36v~75v 2.5a 3.3v 20a 90.5% e48sr05012nrfa 36v~75v 2.1a 5.0v 12a 91.5% E48SR12005nrfa 36v~75v 2.2a 12v 5a 92.0% e48sr12007nrfa 36v~75v 3.0a 12v 7a 93.0% e48sr15004nrfa 36v~75v 2.2a 15v 4a 91.5% 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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