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feat ure s high ef ficiency : 8 4 .0% @ 1 . 2v/25 a size: 33.0 x 22.9 x 9.5 mm (1.30?x0.90 ? x0.3 7?) industr y st an dar d footprint and pinout fixed f r equenc y operation smd and thr oug h-hole versions input uvl o and ovp otp and o u tput ocp , ovp output volt age t r im: -20%, +1 0% monotonic st artu p into normal an d pre-biased loads 2250v isolation and basic insulatio n 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, ohsas1800 1 certified manufactu ring facility ul/cul 60950 ( u s & canada ), t u v (en60950 ) and ce mark pendin g delphi series v48sr, 1/16 th brick 66w dc/dc p o wer modules: 48v in, 1.2v , 25a out the delp hi s e rie s v48s r, 1/16 th brick, 48v inp u t, sin g le outp u t, isolated dc/ dc conv erte r , is the l a test of ferin g from a wo rl d leade r in powe r system s tech nology an d manufa c turi n g D delt a el ectronics, inc. this prod uct famil y provides u p to 66 watt s o f power o r 25 a of output curren t (1.8v an d bel ow) i n an i n d u stry st and ard 1/16 th brick form fac t or (1.30? x 0.90?). the 1. 2v output of fers one of the highe st outp u t current s av ailable and provides up to 84.0% ef ficiency at full load. with creative design 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 a nd the r mal pe rform ance, as we ll as extremely hig h reliability u nder hi ghly stressful ope rating co nditio n s. all module s are prote c ted f r o m abn orm a l i nput/output v o lt age, cu rre nt, and temperature con d ition s . for lowe r po wer need s with the 1.2v output, but in a similar small form factor , pl ease check out delt a s48sp (36w o r 1.2v/10a) a nd s48se (17w or 1. 2 v /5a) se rie s st an dard dc/dc module s . options smd pins positive remote on/ o f f otp and o u tput ovp , ocp mod e (auto- rest art o r la tch) applica t ions optical t r ansport dat a net w orking communications servers d a t a s h eet ds_v4 8 sr1 r 225 _0 131 20 07
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 V48SR1R225 (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 fig u re 2 1 for mea s uring poin t -40 127 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 inpu t cur r ent 100% lo ad, 36v i n 1.2 a no-load inpu t curr ent 50 ma of f conv erter inpu t current 10 ma inru sh c u r r ent ( 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 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 1.188 1.200 1.212 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 to125 c 12 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 1.164 1.20 1.236 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 15 30 mv operati ng outpu t current range 0 25 a outpu t ov er current p r ote c tion 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.m ax to 75% io .m ax 50 m v negativ e s t ep cha nge in ou tpu t curr ent 75% io.m ax to 50% io .m ax 50 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, fro m on/of f con t rol 30 ms s t art-u p t i m e , f r o m inpu t 30 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 30000 f effi ci ency 100% lo ad 84.0 % 60% loa d 8 4 . 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 1 100 pf fe a t ure ch a r acteri s ti cs sw itching freq uen cy 420 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 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 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 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 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 120 130 160 % genera l specifica t ions mtbf io=80% of io, max ; t a =25c, ai rflow rate=300flm 2.22 m hour s we i g ht 1 6 g r a m s ov er-t emperature shut dow n re f e r t o f i gu r e 21 fo r m e as u r i n g p o i nt 130 c ds_v48s r1 r22 5_0 1312 007 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 ds_v48s r1 r22 5_0 1312 007 3
electri cal characteristi cs cur ves for negative remote on/off logic figure 4 : t u rn-on transi ent a t full rated l o a d current (res i stive load) (5 ms/di v ). v i n= 48v . t op t r ace: v out , 0.5v/div; bottom 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 op t r ace: v out: 0 . 5v/div , bottom t r ace: on/ o f f input,5v/div for positive remote on/off logic figure 6 : t u rn-on transi ent a t full rated l o a d current (res i stive load) (5 ms/di v ). v i n= 48v . t op t r ace: v out , 0.5v/div; bottom t r ace: on/of f input, 2v/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, 0 .5v/div; bottom t r ace: on/of f input, 2v/div ds_v48s r1 r22 5_0 1312 007 4
electri cal characteristi cs cur ves ds_v48s r1 r22 5_0 1312 007 5 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 (50 m v/d i v , 200us/div ) , bottom t r ace: iout (10a/div). scope me asur ement sho u l d be made usi ng a bnc ca ble (len gth shorter than 20 inche s ). position the load betw e e n 51 mm to 76 mm (2 inches to 3 in ches) from th e 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 (75%-50%-75% of io, max; di/d t = 1.0a/ s ) . load c ap: 100 f t a nt al u m ca p a citor a nd 1 f c e ra mic c a p a c i tor . t op t r ace: v out (50 m v/div , 2 0 0us/div ) , bott om t r ac e: iout (10a/div). sco pe meas ure m e n t shoul d be ma de us ing a bnc cabl e (len gth shorter than 20 inch es). position th e load 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 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 , 1us/div)
electri cal characteristi cs cur ves 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= 25a)(5 0 mv/d iv , 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 strip copper vo(-) vo(+) 10u 1u scope resistiv load ds_v48s r1 r22 5_0 1312 007 6
ds_v48s r1 r22 5_0 1312 007 7 design considera t ions input source impedance the impe dan ce of the in put so urce conne cting to the dc/ dc power modules will intera ct with the modules and af fect the st a b ility . a low ac-i mpe dan ce input sou r ce is recomme nde d. if the sou r ce in du ct an ce is m o re t h an a few h, we advise ad din g a 10 to 100 f electrolytic ca p a cit o r (e s r < 0. 7 ? at 100 khz) mo unted clo s e t o the input of the module to imp r ove the st abili ty . lay out and emc considerations delt a? s dc/dc power mod u les are desi gned to operate in a wide vari ety of systems and appli c at ions. fo r de sign assist an ce wi th emc comp liance and rel a ted pwb layout issue s , plea se co nt a c t delt a? s te chni cal sup port te am. an external inp u t filter module is availabl e for easie r emc compli an ce desi gn. application n o tes to assist desi gne rs in addre ssi ng these issu es are pe n d ing 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 requi rement s of the end-user ? s safety agency st anda rd, i.e., ul60 950, can/csa - c2 2.2 no. 6 095 0-00 and e n 6095 0: 2000 and iec6095 0-19 99, if the system in which the power mo dule is to be used must meet sa fety agency requireme nt s. basic i n sulat i on ba sed o n 75 vd c i nput is p r ov ided betwe en the input and output of th e module for the purp o se of a pplying in sul a tion re quire ments whe n the input to this dc-to-dc co nver ter is id e n tified as tnv-2 or selv. an additional eval uation is nee ded if the source is other tha n tnv-2 or selv. whe n the input source is sel v circuit, the power mo dul e meet s sel v (safety extra-l o w volt a ge) requireme nt s. if the input sou r ce is a hazard o u s volt age whi c h is greate r than 60 vdc an d less tha n or eq ual to 75 vdc, for the modul e? s output to meet sel v req u irem ent s, all of the follo win g 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_v48s r1 r22 5_0 1312 007 8 fea t ures descriptions over-cu rre nt protection the modul e s inclu de a n internal o u tput over-current prote c tion ci rcuit, which wi ll endure current limiting fo r an unlimited d u ration du ring output overl o ad. if the output curre n t exce eds the ocp set point, the module s will automatically shut do wn, a nd ente r hi ccup mo de o r l a tch mode, whi c h i s option a l. for hi ccup mode, the module will try to resta r t after shutdown. if the over current condition still exists, the module will shut down aga in. this re start trial will cont inue until the over curre n t con d ition is corre c ted. for latch mod e , the module will latch off once it shutdown . the latch is reset by eithe r cycli ng the i nput po wer o r by toggling the o n /off signal fo r one second. over-v olt age protection the module s includ e an internal output over-v olt a g e prote c tion ci rcuit, which monitors the volt age on the output termin als. if this volt age exce ed s the over-volt age threshold, the module will shut down, an d enter in hiccup mode o r latch mode, whi c h is optional. for hiccu p mode, the module will try to rest art af ter shut do wn. if the over volt age co nditio n still exist s , the module will shut down ag a i n. this rest art trial will continue until the over volt age condi tion is co rrect ed. for latch mod e , the module will latch of f once it shut d o wn . the latch is reset by eithe r cycli ng the i nput po wer o r by toggling the o n /of f signal fo r one second. over-t emp e rature pro t ection the over-tem peratu r e p r ot ection con s i s t s of circuitry that provide s p r otection fro m thermal damag e. if the temperature excee d s the ove r-tem pe ra ture thre shol d the module will shut do wn, an d enter in hi ccup m ode or latch mode, whi c h i s option a l. for hiccu p mode, the module will try to rest art af ter shut down. if the over tem perature condition still exist s , the module will shut down a gain. t h is rest art tri a l wil l contin ue until the over temperatu r e con d ition is corre c ted. for latch mod e , the module will latch of f once it shut d o wn . the latch is reset by eithe r cycli ng the i nput po wer o r by toggling the o n /of f signal fo r one second. remote on /off the rem o te on/of f feature on the module can be e i ther negative or p o sitive logi c. neg a tive logi c turn s the m odule on du ring a logic lo w a nd of f during a l ogic high. po sitive logic tu rn s th e modul es o n duri ng a l o gic hi gh a n d of f durin g a logi c low . remote on/of f can be con t rolled by an external swi t ch betwe en the on/of f terminal and the v i (-) terminal. the swit ch can be an open coll ector o r op en drain. for neg ative logic if the remote on/of f fe ature is not used, plea se sh ort the on/of f pin to v i (-). for p o s itiv e logic if the remote on/of f feature is not used, plea se leave the on/of f pin floating. 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 compe n sates for volt ag e drop s on the output by sensin g the actual output volt age at the point of load. the volt age b e twe en the rem o te sen s e pi ns and the output terminals m u st not excee d the output volt a ge sen s e rang e given here: [v o(+) ? v o (?)] ? [sense(+ ) ? sense(?)] 10% v out this limit incl ude s any increase in volt age due to re mote sen s e comp ensation an d output volt age set point adju s tment (trim). vi(-) vi(+) vo(-) vo(+) sense(+) sense(-) resistance contact contact and distributio losses figure 1 7 : ef fective circuit config uratio n for remote sen s e oper ation if the remote sen s e feature is not used to regulate the output at the point of load, 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 can be incre a sed by both the rem o te sen s e an d the trim; howe v er , the maximum increa se is the large r of either the re mote sen s e o r the trim, not the sum of both.
ds_v48s r1 r22 5_0 1312 007 9 () ? = ? ? + = ? k up rtrim 1 . 51 2 . 10 10 511 10 6 . 0 ) 10 100 ( 2 . 1 11 . 5 t r im re sist o r s can al so be conn ecte d to v o + o r v o - but con n e c tin g this way would intro d u c e a small e r ror volt age than t he de sire d value. 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 . () ? ? ? ? ? ? + = ? k up rtrim 2 . 10 511 0.6 ) (100 vo 11 . 5 ex. when t r i m -up +10% (1.2v1.1 = 1.3 2 v) 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 t r im and sense (+) the output volt age set p o int incre a se s (fig. 19 ). the external re si stor valu e req u ired to obt ai n a percent a g e output volt a ge chan ge % is defined as: () () ? = ? ? ? ? ? ? ? ? = ? k k down rtrim 9 . 40 2 . 10 10 511 fea t ures descriptions (con.) 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 sho u l d be t a ken to en sure that the maximum outp u t po w e r does no t exce ed the m a ximum rate d po w e r . 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, con n e c t an e x ternal re si stor bet wee n the trim pin a n d either the sense(+ ) or sense(-). the trim p i n sho u ld be left open if this feature i s not use d . 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). t he extern al resi stor va lue 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)
ds_v48s r1 r22 5_0 1312 007 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 te : w i n d tu n n e l te s t s e tu p f i g u re d i m e n s io n s ar e in m i llim e t er s a n d ( i n c h e s ) 1 2 .7 ( 0 . 5 ?) m o dul 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 c i t y and am b i e n t t e mp er at ur e m e as u r ed b e lo w t h e m o dul e figure 2 0 : w i nd tunne l test setup thermal derating heat ca n be removed by incre a si ng airfl o w over the module. t o enhan ce system relia bility , the power m odule sho u ld alway s be operated be low the maximum ope rating temperature. if the temp eratu r e ex ce eds th e ma ximum module tem p eratu r e, relia bility of the u n it may be af fected. thermal cur ves figure 2 1 : t e mp eratur e mea s ure m e n t locati on t he all o w ed maxi mu m h o t spot temp erature is defin ed at 12 7 . v 4 8 s r 1 r 225( st andar d) o u t put c u r r ent v s . a m bi ent tem p e r at ur e an d a i r vel o ci t y @ v i n = 48v ( e i t her o r i ent at i on) 0 5 10 15 20 25 65 7 0 75 8 0 85 na t u r a l c onv ect i on 100l fm 3 00lfm 200l fm a m bi e n t t e m p er a t u r e ( ) o u tp u t c u r r e n t ( a ) figure 2 2 : output curre nt vs. ambi ent t e mper ature a nd ai r v e l o city @ v i n = 48v (either orient atio n)
p i c k a n d p l a c e l o c a t i o n recommended p ad la yout (smd) surf ace-mount t a pe & reel ds_v48s r1 r22 5_0 1312 007 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 v4 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 v4 8 s r, me asure d on t h e pi n +v out jo int . ds_v48s r1 r22 5_0 1312 007 12
mechanical dra w ing surface-mount module through-h o le module pin no. name function 1 2 3 4 5 6 7 8 +v in on/off -v in -v out -sense tr i m +sense + v out positive i nput v o lt ag e remote on/off neg a tive in put volt ag e neg a tive o u tpu t volt age neg a tive remot e sense output volt age trim positive remote sense positive o u tput volt age ds_v48s r1 r22 5_0 1312 007 13
p a rt numbering system v 4 8 s r 1 r 2 2 5 n r f a t y pe of produc t inpu t v o lt ag e number of outp ut s produc t series outp ut vo l t a g e outp ut current on/off logic pin le ngth/ t y pe o p t i o n co d e v ?1/16 br ick 48v s - single regular 1r2 ? 1.2v 25 - 25a n- nega tive p- positive r - 0.170 ? n - 0.145 ? k - 0.1 1 0 ? m - smd f- ro hs 6/6 (lead f r ee ) a - s t andard f u n c tions model list model name input outp ut eff @ 100 % load V48SR1R225 nr f a 3 6 v ~ 7 5 v 1 . 2 a 1 . 2 v 2 5 a 8 4 . 0 % v48sr1r525 nr f a 3 6 v ~ 7 5 v 1 . 4 a 1 . 5 v 2 5 a 8 5 . 0 % v48sr1r825 nr f a 3 6 v ~ 7 5 v 1 . 6 a 1 . 8 v 2 5 a 8 7 . 0 % v48sr2r520 nr f a 3 6 v ~ 7 5 v 1 . 8 a 2 . 5 v 2 0 a 8 9 . 0 % v48sr3r320 nr f a 3 6 v ~ 7 5 v 2 . 4 a 3 . 3 v 2 0 a 9 0 . 5 % v48sr05013n r f a 3 6 v ~ 7 5 v 2 . 3 a 5 . 0 v 1 3 a 9 1 . 0 % v48sr12005n r f a 3 6 v ~ 7 5 v 2 . 3 a 1 2 v 5 . 5 a 9 1 . 0 % v48sr15004n r f a 3 6 v ~ 7 5 v 2 . 3 a 1 5 v 4 . 4 a 9 1 . 0 % defau l t remote on/of f logic is neg ative a nd pi n len g th is 0.17 0? f o r dif f erent re mote on/of f lo gi c and pi n le ngt h, pleas e refer to p a rt number i ng s y stem abo ve or cont act your loc a l sal e s of fic e. c o nt ac t : www .delt a . com.tw/dcd c us a : t e lepho ne: east coast: (888) 33 5 82 01 w e st coast: (888) 33 5 82 08 f a x: (97 8 ) 656 396 4 email: dcd c @ delt a -c orp.co m europe : phon e: + 41 31 998 5 3 1 1 f a x: + 41 31 9 9 8 53 53 email: dcdc@delt a - e s.com a s i a & the re st of w o r l d: t e lepho ne: + 8 86 3 45 26 10 7 ext 6 220 f a x: + 886 3 4 5 134 85 email: dcd c @ delt a .com.t w w arra nt y delt a of fers a two (2) year limited warrant y . complete warranty information is list ed on our web site or i s available u pon requ est from delt a. information fu rnished by delt a is beli e ve d to be accu rate and re li ab le. ho weve r , no respon sibi lity is assum e d by delt a fo r it s use, no r for a n y infringem e n t s of p a tent s or othe r righ t s of thir d p a rti e s, whi c h m a y result from i t s u s e. no li cense is g r ant e d by implication or otherwise unde r any p a tent or p a tent right s of delt a. delt a re se rves the right to revise the s e spe c ificatio ns at any time, without noti c e . ds_v48s r1 r22 5_0 1312 007 14

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