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delphi series dnt12 non-isolated point of load dc/dc power modules: 8.3~14v i n, 0. 75~5.5v o , 3a the delphi serie s dnt1 2, 8.3v~14v in put, 3a singl e output, non-i s olate d point of loa d dc/ dc co nve r ters a r e the l a test of feri ng from a wo rld l eade r in power syst ems te chn o lo gy and ma nuf acturi ng -- de lt a electroni cs, inc. the dnt 12, 3a se rie s p r ovide s a p r ogra mmabl e output volt ag e from 0.75v to 5.5v usin g extern al re sisto r s. this product family is available in a surfa c e m o u n t or sip p a ckage an d pr ovides up to 3a of curre nt in an indu stry st a ndard footprint. wi th creative desig n technol og y and optimizatio n of comp o nent pla c em ent, these conve r ters posse ss out st andi ng electri c al an d therm a l p e rform a n c e and extreme l y high reliability under highly stressful operat i ng condition s. the dnt 12, 3 a module s h a ve excell ent th ermal perfo rmance an d can p r ovide fu ll outpu t curre n t at up to 85 ambi ent temperature with n o ai rflow . optio n s positive on/of f lo gic sip p a ckage applica t i o ns t e lecom/dat a co m distributed po w e r architectures servers and w o r kst ations lan/w a n applications dat a processing applications featur es high ef ficiency : 93.0% @ 12v in, 5.0v/3a out small size and low p r ofile: 0.80? x 0.45 ? x 0. 27? (smd ) 0.90? x 0.40 ? x 0. 25? (sip) s t andard footp r in t and pinout resistor-based tr im output volt age pr ogrammable f r o m 0.75vdc to 5.5vd c via external res i stors pre-bias st artup no minimum load required fixed f r equenc y operation input uvl o , oc p r e m o t e o n /o ff 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) - pe nding ce mark meet s 73/23/eec and 9 3 /68/eec - pending prelimin a r y d a t a s h ee t ds_dnt1 2 sm d03 _06 25 20 0 7
ds_dnt 12s md03 _06 252 007 2 technical specifica t i o ns (t a = 25 c, airfl o w rate = 300 lf m, v in = 12vdc, nomi n al v out u n less o t her w ise note d .) p a ramete r notes an d co nditio n s dnt 12s0a0 s 03nf a m i n . t y p . max . unit s absolute ma ximum ra tings inpu t v o lt ag e (con ti nuous) 0 15 vdc operati ng t e mpera t ure refer to figure 28 for mea s uring poin t -40 +125 c s t orage t e mperatu r e -55 +125 c i n put characteri s ti cs operati ng inpu t v o l t age 8.3 12 14 v inpu t under -v ol t a g e lo cko u t t u rn-on v o l t age th reshold 7.90 v t u rn-o f f v o lt age th r e s h o l d 7 . 7 0 v max i mu m i npu t current v i n=8.3v , v o =5v , io=3a 2.2 a no-load inpu t curr ent v o =5v 50 70 ma of f conv erter inpu t current 2 10 m a inru sh t r an sient v i n= v i n , min to v i n , max , io=io , min to io,max 0.4 a 2 s recommended inp u t fu se tbd a output charac t eri s ti cs outpu t v o lt age set point v i n=12v , io= i o , max -2.0 vo , s e t +2. 0 % v o ,se t outpu t v o lt age adj u st able range 0.7525 5.5 v outpu t v o lt age reg u lation ov er line v i n=v i n,min to v i n , max 0.3 % v o ,se t ov er load io= i o , m i n to io ,m a x 0.4 % v o ,se t ov er t e mperature t a = -40 to 85 0 . 4 % v o ,se t 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 -3.0 +3. 0 % v o ,se t outpu t v o lt age rip p le and noise 5hz to 20mhz ban dw id th peak- t o-pe ak v i n=min to max , io =min to max , 1f ceramic, 10f t an 50 80 mv rms v i n=min to max , io =min to max , 1f ceramic, 10f t an 20 30 mv outpu t cur r ent ran ge 0 3 a outpu t v o lt age ov e r-shoo t at s t ar t-up 1 % v o ,se t outpu t dc cur r ent- l imit in ception 200 % io outpu t shor t-circu i t curre nt (hiccup m ode) i o ,s/ c 1.5 adc (rms) dynami c chara cteri s ti cs dy namic load response 10f t an & 1f ce ramic load cap , 2.5 a /s posi tiv e s t ep chan ge in ou tput curre nt 50% io, max to 100 % io, max 200 mvpk negativ e s t ep cha nge in ou tpu t curr ent 100% io , max to 50 % io, max 200 mvpk setting t i me to 10 % o f pe ak dev i t a tio n 25 s t u rn-on t r an sien t io= i o . m a x s t art-up t i me, fro m on/of f con t rol v on/of f, v o =10% of v o ,set 7 10 ms s t art-u p t i m e , f r o m inpu t v i n = v i n , m i n, v o = 1 0% of v o ,s et 7 10 ms max i mu m outpu t s t artup cap a ci tiv e l oad full load ; e s r R 1m ? 1 0 0 0 f full load ; e s r R 10 m ? 3000 f effi ci ency vo = 0 . 7 5 v v i n=12v , io= i o , max 72.0 % v o =1.2 v v i n=12v , io= i o , m a x 8 0 . 0 % vo = 1 . 5 v v i n=12v , io= i o , max 83.0 % v o =1.8 v v i n=12v , io= i o , m a x 8 5 . 0 % vo = 2 . 5 v v i n=12v , io= i o , max 88.0 % v o =3.3 v v i n=12v , io= i o , m a x 90.0 % vo = 5 . 0 v v i n=12v , io= i o , max 93.0 % fea t ure chara cteri s ti cs sw itching freq uen cy 300 kh z on/off control, ( f or nega tiv e logic) logic low v o lt a g e module on , v o n / o f f -0.2 0.3 v logic high v o lt age module o f f, v o n/o f f 2.5 v i n,max v logic low current module on , ion / o f f 10 ua logic high cur r ent module o f f, ion / o f f 0.2 1 ma on/off control, ( f or po sitiv e logic) logic high v o lt age module on , v o n / o f f vi n , m a x v logic low v o lt a g e module o f f, v o n/o f f -0.2 0.3 v logic high cur r ent module on , ion / o f f 10 ua logic low current module o f f, ion / o f f 0.2 1 ma general specif ica t ions mtbf i o =i o , max , t a =25 38.29 m hour s w e igh t 2 . 3 g r a m s
ds_dnt 12s md03 _06 252 007 3 electri cal characteristi cs cur ves 72 75 78 81 84 87 90 93 96 0. 5 1 1. 5 2 2. 5 3 output current (a) efficiency (%) 71 74 77 80 83 86 89 92 95 0 . 511 . 522 . 5 3 output current (a) efficiency (%) figure 1 : converter ef ficie n c y vs. output current (12v in, 5v o u tput volt ag e) figure 2 : converter ef ficie n c y vs. output current (12v in, 3.3v o u tput volt ag e) 74 76 78 80 82 84 86 88 90 0. 5 1 1. 5 2 2. 5 3 output current (a) efficiency (%) 72 74 76 78 80 82 84 86 88 0 . 511 . 522 . 5 3 output current (a) efficiency(%) figure 3 : converter ef ficie n c y vs. output current (12v in, 2.5v o u tput volt ag e) figure 4 : converter ef ficie n c y vs. output current (12v in, 1.8v o u tput volt ag e) 72 74 76 78 80 82 84 86 88 0. 5 1 . 0 1. 5 2 . 0 2. 5 3 . 0 output current (a) efficiency (%) 70 72 74 76 78 80 82 84 0 . 511 . 522 . 5 3 output current (a) efficiency (%) figure 5 : converter ef ficie n c y vs. output current (12v in, 1.5v o u tput volt ag e) figure 6 : converter ef ficie n c y vs. output current (12v in, 1.2v o u tput volt ag e)
ds_dnt 12s md03 _06 252 007 4 electri cal characteristi cs cur ves figure 7 : outp ut rippl e & nois e at 12v i n , 5.0 v /3a out pk-pk :45.8 m v , rms :17.8mv (50mv/ div , 2us /div) figure 8 : outp ut rippl e & nois e at 12v i n , 3.3 v /3a out pk-pk :37.5 m v , rms :1 1.6mv (50mv/ div , 2us /div) figure 9 : outp ut rippl e & nois e at 12v i n , 2.5 v /3a out pk-pk:33.3 m v , rms:9.4 m v (5 0 m v/div , 2u s/di v) figure 1 0 : output ripp le & no i s e at 12v i n , 1.2v/3a o u t pk-pk: 18.7 m v , rms: 3.9mv (5 0mv/ div , 2us/d iv) figure 1 1 : t u rn on de lay ti me at 12v in, 5.0v/ 3 a out (5m s /div) t op trace: v out , 5v/div; bottom trace: v i n, 10v/div figure 1 2 : t u rn on delay time at remote o n /of f, 5.0v/3a out (5m s /div). t op trace: v out , 5v/div; bottom trace: on/of f , 5.0v/div .
ds_dnt 12s md03 _06 252 007 5 electri cal characteristi cs cur ves figure 1 3 : t u rn on using rem o te on/off with external capac itors (co = 3000 f ), 5. 0v/3a out (resistive lo ad) (5m s /div) t op trace: v out , 5v/div; bottom trace: v i n , 10v/div figure 1 4 : t u rn on usin g input on/off w i th external capac itors (co = 3000 f ), 5.0v/3a o u t (resistive load) (5m s /div) t op trace: v out , 5v/div; bottom trace: on/of f , 5v/div figure 1 5 : t y p i cal trans ient re spons e to step loa d cha nge at 2.5a/ s from 10 0% to 5 0 % of io, max at 12v i n , 5.0v ou t (cout = 1uf ce ramic, 10 f t a nt alu m ) (20 0 m v/div , 20us/div ) figure 1 6 : t y p i cal trans ient re spons e to step loa d cha nge at 2.5a/ s from 50 % to 10 0 % of io, max at 12v i n , 5.0v ou t (cout = 1uf ce ramic, 10 f t a nt alu m ) (20 0 m v/div , 20us/d iv) figure 1 7 : output short circuit current 12v in, 0.75v out (10a/div , 50m s /div) figure 1 8 : t u rn on w i th prebi as 12vi n , 1.8v/0a out, vbias =1.0vdc (5m s /div) t op trace: v out , 1v/div; bottom trace: v i n, 10v/div
ds_dnt 12s md03 _06 252 007 6 test configura t ions design considera t ions input source impedance t o maint a in lo w-n o ise and ripple at the input volt age, it is critical to use low esr cap a citors at the input to the module. the input cap a cita nce should b e able to handle an ac rip p le curre n t of at least: arms vin vout vin vout iout irms ? ? ? ? ? ? ? = 1 the po we r module sh ou ld be conn e c ted to a lo w ac-i mpe dan ce input sou r ce. hi ghly i ndu ctive so u r ce impeda nces can af fe ct the st ability of the module. an input cap a cit ance must be placed clo s e to the modules input pin s to filter ripple curre n t and ensure m odu le st ability in the presen ce o f inductive trace s that su pply the input volt age to the mo dule. safet y considerations for safety-ag ency app rova l the power module mu st be inst all ed in complian c e wit h the sp a c ing and sep a rati on requi rem ent s of the end-u s e safety agen cy st an da rds. for the co nverter outp u t to be con s id e r ed meetin g the requi rem ent s of safety extra-lo w volt age (sel v), the input must m eet sel v req u irem ent s. the power mod u le has extra-lo w volt age (e l v ) output s whe n all input s are el v . the input to these unit s is to be provided with a maximum (t bd) a of gla ss type fast -acting fu se in the ungroun ded l ead. v i (+ ) v i (- ) b a tte r y 2 10 0u f t a nt a l um l t o os c i l l os cop e note: input reflected-r i pp le cu rrent is measur ed w i t h a simulat ed so ur ce ind u ct anc e. current is me asure d at the inp u t of the modul e. figure 1 9 : input reflected-ri p p le test setup vo gn d c o pp er st ri p 10uf t a nt a l um 1uf ce ra m i c sc o p e r e si st i v e l oad note: use a 10 f t ant alu m and 1 f cap a cit o r . scope measur ement shou ld be ma d e using a bn c conn ector . figure 2 0 : peak-p eak o u tp ut nois e an d st artup transi ent me asur e m ent test setup sup p ly i vi v o gn d io load co nt act a n d d i s t r i bu t i o n l o ss es co nt a c t re si st ance figure 2 1 : output volt ag e a nd ef fic i ency me asur e m ent test setup note: all measureme n t s are t a k en at the modu le termin a ls. w hen the m o dul e is n o t sol dere d (via s o c k et), plac e kelvi n con nec tions at mo d u le termi na ls to avoi d measur ement errors du e to cont act resist an ce. % 100 ) ( = ii vi io vo
ds_dnt 12s md03 _06 252 007 7 fea t ures descriptions remote on/of f the dnt seri es power mo dule s have an on/of f pin for remote o n /o f f operation. both positive and neg ative on/off logic option s are available in t he dnt seri es power mo dul es. for po sitive logic m odule , conne ct an open colle ctor (np n ) tran si stor o r open drain (n ch annel ) mos f et betwe en the on/of f pin an d the gnd pi n (see figure 22). positive logic on/off signal turns the module o n during the logi c hig h and tu rn s the modul e off durin g the l o g i c low. when th e po sitive on/ o f f function i s not used, lea v e the pin floatin g or tie to v i n (modul e will be on). for n egative logic m odul e, the on/off pi n is p u lled hi gh with an external pull - up re si sto r (se e fig u re 23) negat ive logic o n /off sign al turn s the modul e o ff durin g lo gic high and turn s the module on during logic lo w. if the negative on/ o f f function is not used, leave the pin floating or tie to gnd. (m odule will be on) rl vo vi n on / o ff gn d i on/ o f f figure 2 2 : positive rem o te on /of f im plem ent a tion vo vi n on/of f gn d rpul l - up rl i on / o f f figure 2 3 : negative re mote on/of f imple m ent atio n over-current protection t o provide prote c tion in an output over load fa ult con d ition, the unit is equip ped with internal over-cu r rent prote c tion. whe n the over-cu r re nt prote c tio n is trigge red, the unit enters hiccup m ode. the u n it s operate no rm ally once the fault conditio n is rem o ved. fea t ures descriptions (con.) o u t p u t v o l t a g e p r o g r a m m i n g the output volt age of the dnt ca n be progra mmed to an y volt age bet ween 0.75v dc and 5.5vd c b y conne cting one resi sto r (sho wn a s rtri m in figure 25 ) betwe en the trim and g nd pi ns of the module. without this ex ternal resi sto r , the output volt ag e of the module is 0.7525 vdc. t o cal c ulate t he value of th e re si stor rtri m for a p a rtic ula r output volt ag e v o , please use the follo wing equ ation: rtrim 10500 2.5475 1000 ? ? ? ? ? ? ? ? := r t r i m = 3 . 12 2 k ? dnt can al so be pro g ra mmed by ap plying a volt age betwe en the trim and gnd pin s (figure 26 ). the followin g equ ation ca n be use d to determine the valu e of vtrim neede d for a desi r ed output volt ag e v o : vtrim 0.7 vo 0.7525 ? ( ) 0.0667 ? ? ? ? ? ? := vtrim is the e x ternal volt ag e in v v o is the de si red outp u t volt age for example, to program the output volt age of a dnt module to 3.3 vdc, vtrim is calculated a s follows vtrim 0.7 2.5475 0.0667 ? ( ) ? := rtrim 10500 vo 0.7525 ? 1000 ? ? ? ? ? ? ? ? := rtrim is the e x ternal re si stor in ? v o is the de si red outp u t volt age for exampl e, to program t he output vol t age of the dnt module to 3.3 v dc, rtrim i s cal c ulate d as follows:
12s md03 _06 252 007 8 ds_dnt fea t ure descriptions (con. ) vtrim = 0.530 v figure 2 4 : circuit config urati on for progr a m mi ng o u tput vol t age usin g an exter nal res i stor figure 2 5 : circuit config urati o n for progra mming outp u t volt a ge usin g extern al volt ag e source t able 1 provides rt rim values requi red for som e com m o n output volt ag es, whil e t able 2 provide s value of external volt age source, vtrim, for the sam e comm on out put volt age s. by usin g a 1% t o lera nce trim resi sto r , set p o int toleran c e of 2% can be achieved as specified in the electri c al spe c ificatio n. t a ble 1 vo (v) rtri m (k ? ) 0 . 7 5 2 5 o p e n 1 . 2 2 2 . 4 6 4 1 . 5 1 3 . 0 4 7 1 . 8 9 . 0 2 4 2 . 5 5 . 0 0 9 3 . 3 3 . 1 2 2 5 . 0 1 . 4 7 2 5 . 5 1 . 2 1 0 t a ble 2 vo (v) vtrim (v) 0.752 5 o p e n 1 . 2 0 . 6 7 0 1 . 5 0 . 6 5 0 1 . 8 0 . 6 3 0 2 . 5 0 . 5 8 3 3 . 3 0 . 5 3 0 5 . 0 0 . 4 1 6 7 5 . 5 0 . 3 8 4 0 fea t ure descriptions (con. ) the am ount of power deli v ered by th e module i s t he volt age at th e output term inals m u ltiplie d b y the outp u t curre n t. whe n using the trim feature, the output volt age of the modul e can be in crea sed, whi c h at the sa me output curren t would incre a se the power output of th e module. care sho u ld be t a ken to e n su re that the maximum output powe r of the module m u st not excee d the maximum rated po we r ( v o .set x io.max p m a x ). v o lt age margining output volt ag e margi n ing can b e imple m ented in th e dnt m odul e s by con nect i ng a re sisto r , r m a rgin -u p , from the t r i m pin to the g r ou nd pin for m a rgini n g - up t h e output volt ag e and by con nectin g a re si stor , r m a rgin -d o w n , from the t r im pin to the ou tput pin for m a rgini n g - do wn. figure 26 shows the circuit config uration for output volt age margining. if unused, leave the trim pin unconn ecte d. a calculatio n tool is ava ilable from the evaluation proce dure, whi c h comp utes the value s of r ma rgin -u p and r ma rgin -d o w n for a spe c ific out put volt age a nd margi n perce nt age. vo o n /o ff vin gnd tr i m q2 q1 r m a r gi n- up r m ar gi n-d o w n rtr i m figure 2 6 : circuit config urati on for outp u t voltag e margi n i n g
ds_dnt 12s md03 _06 252 007 9 thermal consi d era t i o ns therm a l ma nagem ent is an importa nt part of the system de sig n . to ensure prope r, relia ble operation , sufficie n t co o ling of the po wer mod u le i s ne eded ove r the entire tem peratu r e ran g e of the mo du le. conve c tio n cooli ng is u s u a lly the dominant mode of heat tran sfer. hen c e, the choi ce of eq uipment to chara c te rize the thermal pe rfo r man c e of the powe r mo dule is a wi nd tunnel. thermal t esting setup delta? s dc/ dc power mo dule s are ch ara c teri ze d in heated vertical wind tunn els t hat simul a te the thermal environ ment s encounte r ed in m o st ele c tro n i c s equipm ent. this type of equipm ent comm only u s e s ver t ic ally mounted c i rc uit c a rds in cabinet racks in whi c h the po wer m odul es are mo unted. the follo wi ng figure sho w s the wind tun nel cha r a c teri zati on setu p. th e power m o d u le is mo unt ed on a test pwb and is v e rtically po sit i oned withi n the wind tunn el. the height o f this fan duct is con s t a n t ly kept at 25.4m m (1? ? ). thermal derating heat can be removed by incre a si ng a i rflow ove r the module. t o enha nce system reli abi lity, the powe r module shoul d always be o perate d belo w the maximum operating te mperature. if the temperat ure exceed s the maximum m odule tem perature, reliabil i ty of the unit may be affect ed. n o te : w i nd t u n n e l t e s t s e t u p fi g u r e d i m e ns i ons a r e in m i l l im e t e r s a n d ( i nc he s mo du l e a ir flo w 1 2 .7 ( 0 . 5 ? ) 50 . 8 ( 2. 0? ) fa c i n g p w b pw b a i r v e l o cit y a nd a m b i e n t t e mper at u r e m easu red b e l o w th e m o d u l e 2 5 .4 ( 1 . 0 ? ) figure 2 7 : win d tunne l test setup thermal cur ves d n t 12s 0a0 s 03( st andar d) o u t put c u r r ent vs. am bi e n t te m per a t ur e and a i r v e l o ci t y @vi n = 12v , v o = 0. 75 v ~ 5 v ( e i t he r o r i e n t a t i on) 0. 0 0. 5 1. 0 1. 5 2. 0 2. 5 3. 0 3. 5 2 5 30 3 5 40 4 5 5 0 55 60 65 7 0 7 5 80 85 na t u r a l c o nvect i on a m b i en t t e m p er at ur e ( ) o u tp u t c u r r e n t ( a ) figure 2 9 : output current vs. ambi ent tempe r ature an d air velocity@ v i n= 12v , v o = 0 .7 5v ~ 5 .0v (either orient atio n) figure 2 8 : 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 5 .
ds_dnt 12s md03 _06 252 007 10 pick and place lo ca tion surf ace- mount t a pe & reel lead (sn/pb) process re com m end tem p . profile ti m e ( s e c . ) p r e- heat t e m p . 14 0~1 8 0 c 6 0 ~ 120 s e c. p eak t e m p . 21 0~2 3 0 c 5s ec. ra mp -u p te mp. 0.5~ 3.0 c / s ec. t e m p er at u r e ( c ) 50 10 0 15 0 200 25 0 30 0 60 0 12 0 180 240 2n d ra mp -u p te mp . 1.0 ~ 3. 0 c / s ec. o v e r 200 c 4 0 ~ 50s ec . coo ling d o w n r a te < 3 c / s ec. lead free (sac) pro c ess re commend temp . profile temp . ti m e 150 20 0 90~ 120 s e c. t i m e l i m i t e d 75 s e c. ab o v e 2 2 0 22 0 pr e h e a t t i m e ra m p u p ma x . 3 /s e c . ra m p d o w n ma x . 4 /s e c . p e a k t e m p . 240 ~ 245 25
ds_dnt 12s md03 _06 252 007 11 mechanical dra w ing smd p a ck age sip p acka ge ( o ption a l)
ds_dnt12smd03_06252007 12 part numbering system dnt 12 s 0a0 s 03 n f a product series input voltage numbers of outputs output voltage package type output current on/off logic option code dnt - 3a or 5a 04 - 2.4v ~ 5.5v 12 - 8.3v ~ 14v s - single 0a0 - programmable r - sip s - smd 03 - 3a 05 - 5a n- negative p- positive f- rohs 6/6 (lead free) a - standard functions model list model name package input voltage output voltage output current efficiency 12vin, 5vout full load dnt12s0a0s03nfa smd 8.3v ~ 14vdc 0.75v ~ 5.5vdc 3a 93.0% dnt12s0a0r03nfa sip 8.3v ~ 14vdc 0.75v ~ 5.5vdc 3a 92.5% DNT12S0A0S05NFA smd 8.3v ~ 14vdc 0.75v ~ 5.5vdc 5a 92.0% dnt12s0a0r05nfa sip 8.3v ~ 14vdc 0.75v ~ 5.5vdc 5a 91.0% 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 warranty. 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 reliable. 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

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