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- datasheet d s _ dnt 12 sip05 _ 0 8292013 features ? high efficiency: 9 2 % @ 12vin , 5 v/5a out ? small size and low profile: 0.80 x 0. 45 x 0. 27 (smd) 0.90 x 0. 4 0 x 0. 2 5 (sip) ? standard footprint and pinout ? r es istor - based trim ? output voltage programmable from 0.75vdc to 5. 0vdc via external resistors ? pre - bias startup ? no minimum load required ? fixed frequency operation ? input uvlo , ocp ? remote on/off ? iso 900 1 , tl 9000, iso 14001, qs9000, ohsas18001 certifie d manufacturing facility ? ul/cul 60950 - 1 (us & canada) recognized applications ? telecom/datacom ? distributed power architectures ? servers and work stations ? lan/wan applications ? data processing application s options ? negative on/off logic ? smd package delphi series dn t 12 non - isolated point of load dc/ dc power modules: 8.3~14vin, 0.75 ~ 5 .0 vo, 5 a the delphi series dn t 12, 8.3 v~14v input, 5a single output , non - isolated point of load dc/dc converters are the latest offering from a world leader in power systems technology and manufacturing delta electronic s, inc. the dn t 12, 5a series provides a programmable output voltage from 0.75v to 5v using external resistors. this product family is available in a surface mount or sip package and provides up to 5a of current in an industry standard footprint and pinout. with c reative design technology and optimization of component placement , these converters possess outstanding electrical and thermal performance and extremely high reliability under highly stressful operating conditions. the dnt12, 5 a sip modules have exc ellent thermal performance and can provide full output current with little air flow.
ds_dnt12sip0 5 _ 0 8292013 2 technical specificat ions ( t a = 25c, airflow rate = 300 lfm, v in = 8.3 vdc and 14vdc, nominal vout unless otherwise noted.) parameter notes and conditions dnt12s0a0r05nfa min. typ. max. units absolute maximum ratings input voltage 0 15 vdc operating temperature - 40 85 c storage temperature - 55 125 c input characteristics operating input voltage 8.3 12 14 v input under - voltage lo ckout turn - on voltage threshold 7.95 v turn - off voltage threshold 7.80 v maximum input current vi n =vin,min to vin,max, io=io,max 3.5 a no - load input current vo=5v 50 7 0 ma off converter input current 1 10 ma inrush transient vin= vi n ,min to vi n ,max, io=io,min to io,max 0.4 a 2 s recommended input fuse 7 a output characteristics output voltage set point vin= 12v , io=io,max - 1.5 vo,set +1.5 % vo,set output voltage adjustable range 0.7525 5.0 v output voltage regulation over line vi n =vi n ,min to vi n ,max 0.4 % vo,set over load io=io,min to io,max 0.4 % vo,set vo,set over temperature 0.4 % vo,set total output voltage range over sample load, line and temperature - 3.0 +3.0 % vo,set output voltage ripple and n oise 5hz to 20mhz bandwidth peak - to - peak vin=min to max, io=min to max 1f ceramic, 10f t an 40 70 mv rms vin=min to max, io=min to max 1f ceramic, 10f t an 20 25 mv output current range 0 5 a output voltage over - shoot at start - up 5 % vo,se t output dc current - limit inception 160 % io output short - circuit current (hiccup mode) io,s/c 1.5 adc (rms) dynamic characteristics dynamic load response 47f tan & 1f c eramic load cap, 5a/s positive step change in output current 50% io , max to 100% io , max 150 mv pk negative step change in output current 100% io , max to 50% io , max 150 mv pk setting time to 1 0 % of peak deviation 25 s turn - on transient io=io.max start - up time, from on/off control von/off, vo=10% of vo,set 15 25 ms start - up time, from input vin=vin,min, vo=10% of vo,set 15 25 ms maximum output startup capacitive load full load; esr R 1m 1000 f full load; esr R 10m 3000 f efficiency vo=0.75v vi n =12v, io=io,max 71.0 % vo=1.2v vi n =12v, io=io,max 79.0 % vo=1.5v vi n =12v, io=io,max 82.0 % vo=1.8v vi n =12v, io=io,max 84.0 % vo=2.5v vi n =12v, io=io,max 87.0 % vo=3 .3v vi n =12v, io=io,max 89.5 % vo=5.0v vi n =12v, io=io,max 92.0 % feature characteristics switching frequency 480 khz on/off control, (negative logic) logic low voltage module on, von/off - 0.2 0.3 v logic high voltage module off, von /off 2.5 vin,max v logic low current module on, ion/off 10 ua logic high current module off, ion/off 0.2 1 m a general specifications mtbf io =io, max, ta=25 8.8 m hours weight 2.1 grams
ds_dnt12sip0 5 _ 0 8292013 3 electrical character istics curves figure 1 : converter efficiency vs. output current ( 12v in, 5v output voltage) figure 2 : converter efficiency vs. output current (12v in, 3.3v output voltage) figure 3 : converter efficiency v s. output current ( 12v in, 2 .5 v output voltage) figure 4 : converter efficiency vs. output current ( 12v in, 1.8 v output voltage) figure 5 : converter efficiency vs. output current ( 12v in , 1.5v output voltage) figure 6 : converter efficiency vs. out put current ( 12v in, 1.2 v output voltage)
ds_dnt12sip0 5 _ 0 8292013 4 electrical character istics curves figure 7: output ripple & noise at 12 vin, 1.2v 5 a out 20mv/div, pk - pk : 12.50mv, rms : 2.79mv(20mv/div,2us/div) figure 8: output ripple & noise at 12 vin, 2.5v/5a out 50mv / div , pk - pk :17.50mv, rms :4.67mv(20mv/div,2us/div) figure 9: output ripple & noise at 12 vin, 3.3v/5a out 50mv/div, pk - pk :20.00mv, rms :5.59mv(20mv/div,2us/div) figure 10: output ripple & noise at 12vin, 5.0v/5a out pk - pk :24.16mv, rms :7.36mv ( 20mv/div,2us/div) figure 1 1: turn on delay time at 12vin, 5.0v 5 a out ( 10 ms/div) top trace :vout , 2v/ div ; bottom trace :vin ,20v/div figure 1 2: turn on delay time at remote on/off, 5.0v/ 5 a out ( 10 ms/div).top trace: vout ,2v/div ;bottom trace : on/off , 5v/div.
ds_dnt12sip0 5 _ 0 8292013 5 electrical character istics curves figure 1 3: turn on using input on/off with external capacitors (co=3000 f) , 5.0v/ 5 a out (resistive load)( 10 ms/div) top trace:vout, 2v/div; bottom trace: vin ,20v/div figure 1 4: turn on using re mote on/off with external capacitors (co= 3000 f) , 5.0v/ 5 a out (resistive load)( 10 ms/div) top trace: vout,2v/div; bottom trace: on/off,5v/div figure 15: typical transient response to step l oad change at 5a/s from 100% to 50% of io, max at 12vin, 5 .0v out (cout = 1uf ceramic+ 47f ceramic)(100mv/div, 20us/div) figure 1 6: typical transient response to step load change at 2.5a/s from 50% to 100% of io, max at 12vin, 5.0v out (cout = 1uf cer amic+ 10f ceramic)(100mv/div, 20us/div) figure 17: output short circuit current 12vin, 0.75vout ( 0.5 v/div , 5 0ms/div) figure 18: turn on with prebias 12vin , 5v/0a out , vbias =3.3vdc . ( 5 ms/div) top trace : vout,5v/div; bottom trace: vin, 10v/div
ds_dnt12sip0 5 _ 0 8292013 6 test configurations note: input reflected - ripple current is measured with a simulated source inductance. current is measured at the input of the module. figure 1 9: input reflected - rippl e test setup note: use a 10f tantalum and 1f capacitor. scope measurement should be made using a bnc connector. figure 20 : peak - peak output noise and startup transient m easurement test setup figure 21: output voltage and efficiency measurement test setup note: all measurements are taken at the module terminals. when the module is not soldered (via socket), place kelvin connections at module terminals to avoid measurement errors due to conta ct resistance. design consideration s input source impedance the power module should be connected to a low ac - impedance input source. highly inductive source impedances can affect the stability of the module. an input capacitance must be placed close to the modules input pins to filter ripple current and ensure module stability in the presence of inductive traces that supply the input voltage to the module. safety considerations for safety - agency approval the power module must be installed in compliance with the spacing and separation requirements of the end - use safety agency standards. for the converter output to be considered meeting the requirements of safety extra - low voltage (selv), the input must meet se lv requirements. the power module has extra - low voltage (elv) outputs when all inputs are elv. the input to these units is to be provided with a adequate time - delay fuse in the ungrounded lead. v i ( +) v i ( -) battery 2 100uf tantalum l to oscilloscope vo gnd copper strip 10uf tantalum 1uf ceramic scope resistive load supply i v i vo gnd io load contact and distribution losses contact resistance % 100 ) ( ? ? ? ? ii vi io vo ?
ds_dnt12sip0 5 _ 0 8292013 7 design cons iderations (con.) remote on/off the dnt series power modules have an on/off pin for remote on/off operation. both positive and negative on/off logic options are available in the dnt series power modules . for positive logic module, connect an open collec tor (npn) transistor or open drain (n channel) mosfet between the on/off pin and the gnd pin (see figure 22). positive logic on/off signal turns the module on during the logic high and turns the module off during th e logic low. when the positive on/off fun ction is not used, leave the pin floating or tie to vin (module will be on) . for negative logic module, the on/off pin is pulled high with an external pull - up resistor (see figure 2 3) negative logic on/off signal turns the module off during logic high and turns the module on during logic low. if the negative on/off function is not used, leave the pin floating or tie to gnd. (module will be on) figure 2 2: positive r emote on/off i mplementation figu re 23: negative remote on/off implementation over - current protection to provide protection in an output over load fault condition, the unit is equipped with internal over - current protection. when the over - current protection is triggered, the unit enters hiccup mode. the units operate normally once the fault condition is removed. features description s output voltage programming the output voltage of the dn t can be p rogrammed to any voltage between 0.75vdc and 5.0vdc by connecting one resistor (shown as rtrim in figure 2 4 ) between the trim and gnd pins of the module. without this external resistor, the output voltage of the module is 0.7525 vdc. to calculate the value of the resistor rtrim for a particular output voltage vo, please use the following equation: rtrim is the external resistor in rl vo vin on/off gnd i on/off vo vin on/off gnd rpull-up rl i on/off rtrim 10500 vo 0.7525 ? 1000 ? ? ? ? ? ? ? ? ? ??
ds_dnt12sip0 5 _ 0 8292013 8 features description s (con.) for example, to program the output voltage of the dn t module to 3.3vdc, rtrim is calculated as follows: rtrim = 3.122 k for example, to program the output voltage of a dnt module to 3.3 vdc, vtrim is calculated as follows vtrim = 0.530v figure 2 4: circuit configuration for programming output voltage using an ex ternal resistor figure 2 5: circuit configuration for programming output voltage using external voltage source table 1 provides rtrim values required for some common output volta ges, while table 2 provides value of external voltage source, vtrim , f o r the same common output voltages . by using a 1% tolerance trim resistor, set point tolerance of 2% can be achieved as specified in the electrical specification. table 1 v o (v) rtrim (k ) 0.7525 open 1.2 22.464 1.5 13 .047 1.8 9 .02 4 2.5 5 .00 9 3.3 3. 122 5.0 1.472 table 2 vo (v) vtrim (v ) 0.7525 open 1.2 0.670 1.5 0.650 1.8 0.630 2.5 0.583 3.3 0.530 5.0 0.4167 the amount of power delivered by the module is the voltage at the output terminals multiplied by the output current. when using the trim feature, the output voltage of the module can be increased, which at the same o utput current would increase the power output of the module. care should be taken to ensure that the maximum output power of the module must not exceed the maximum rated p ower ( vo.set x io.max p max ). rtrim 10500 2.5475 1000 ? ? ? ? ? ? ? ? ? ?? vtrim 0.7 vo 0.7525 ? ? ? 0.0667 ? ? ? ? ? ? ?? vtrim 0.7 2.5475 0.0667 ? ? ? ? ??
ds_dnt12sip0 5 _ 0 8292013 9 thermal consideratio ns therm al management is an important part of the system design. to ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. convection cooling is usually the dominant mode of heat transfe r. hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. thermal testing setup deltas dc/dc power modules are characterized in heated vertical wind tunnels that simulate the thermal environments en countered in most electronics equipment. this type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. the following figure shows the wind tunnel characterization setup. the power module is mounted on a test pwb and is vertically positioned within the wind tunnel. the height of this fan duct is constantly kept at 25.4 mm ( 1 ). thermal derating heat can be removed by increasing airflow over the module. to enhance system reliability, the powe r module should always be operated below the maximum operating temperature. if the temperature exceeds the maximum module temperature, reliability of the unit may be affected. figure 27 : wind tunnel test setup feature descriptions (con. ) voltage margining output voltage margining can be implemented in the dn t modules by connecting a resistor, r margin - up , from the trim pin to the ground pin for margining - up the output voltage and by connecting a resistor, r margin - down , from the trim pin to the output pin for margining - down. figure 2 6 shows the circuit configuration for output v olta ge margining. if unused, leave the trim pin unconnected. a calculation tool is available from the evaluation procedure, which computes the values of r margin - up and r margin - down for a specific output voltage and margin percentage . figure 26: circuit configuration for output voltage margining ps1 ps1 ps2 ps2 + v air flow module pwb 50.8(2.00") air velocity and ambient temperature sured below the module fancing pwb note: wind tunnel test setup figure dimensions are in millimeters and (inches) vo on/off vin gnd trim q2 q1 rmargin-up rmargin-down rtrim
ds_dnt12sip0 5 _ 0 8292013 10 thermal curves figure 2 8: temperature measurement location the allowed maximum hot spot temperature is defined at 125 . tbd figure 29: output current vs. ambient temperature and air velocity@ vin=12v, vo=5.0v (either orientation , preliminary curves) tbd figure 3 0: output current vs. ambient temperature and air velocity@ vin=12v, vo=3.3v (either orientation, preliminary curves) tbd figure 3 1: output current vs. ambient temperature and air velocity@ vin=12v, vo=2.0v (either orientation, preliminary curves) tbd figure 3 2: output current vs. ambient temperature and air velocity@ vin=12v, vo=0.75~1.5v (either orienta tion, preliminary curves) dnt12s0a0r05(standard) output current vs. ambient temperature and air velocity @vin =12v,vo=5.0v (either orientation,preliminary curves) 0.0 1.0 2.0 3.0 4.0 5.0 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection ambient temperature ( ) output current (a) 300lfm 400lfm 200lfm 100lfm 500lfm 600lfm dnt12s0a0r05(standard) output current vs. ambient temperature and air velocity @vin =12v,vo=3.3v (either orientation,preliminary curves) 0.0 1.0 2.0 3.0 4.0 5.0 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection ambient temperature ( ) output current (a) 400lfm 300lfm 200lfm 100lfm 600lfm 500lfm dnt12s0a0r05(standard) output current vs. ambient temperature and air velocity @vin =12v,vo=2.0v (either orientation,preliminary curves) 0.0 1.0 2.0 3.0 4.0 5.0 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection ambient temperature ( ) output current (a) 400lfm 300lfm 100lfm 500lfm 200lfm dnt12s0a0r05(standard) output current vs. ambient temperature and air velocity @vin =12v,vo=0.75~1.5v (either orientation,preliminary curves) 0.0 1.0 2.0 3.0 4.0 5.0 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection ambient temperature ( ) output current (a) 300lfm 200lfm 400lfm 100lfm
ds_dnt12sip0 5 _ 0 8292013 11 pick and place locat ion surface - mount tape & reel lead (sn/pb) process recommend te mp. profile lead free (sac) proc ess recommend temp. profile note: all temperature r efer s to assembly application board, measured on the land of assembly application board. temp . time 150 200 90~120 sec. time limited 75 sec. above 220 220 preheat time ramp up max. 3 ramp down max. 4 peak temp. 240 ~ 245 25
ds_dnt12sip0 5 _ 0 8292013 12 m ec hanical drawing s md package (optional) sip package note: all pins are copper alloy with matte tin(pb free) plated over nickel under - plating.
ds_dnt12sip0 5 _ 0 8292013 13 part numbering syste m dnt 12 s 0a0 r 05 n f a product series input voltage numbers of outputs output voltage package type output current on/off logic option code dnt C 3a or 5a 04 - 2.4 v ~ 5.5v 12 - 8.3 v ~ 14v s - single 0a0 - programmable r - sip s - smd 05 - 5a n - negative p - positive f - rohs 6/6 (lead free) a - s tandard fun c tion s model list model name package input voltage output voltage o utput current efficiency 12vin, 5v out full load dnt12s0a0s03 nf a smd 8.3 v ~ 14 vdc 0.75 v ~ 5.0vd c 3 a 93.5% dnt12s0a0r03 nf a sip 8.3 v ~ 14 vdc 0.75 v ~ 5.0vdc 3 a 93.5% dnt12s0a0s05 nf a smd 8.3 v ~ 14 vdc 0.75 v ~ 5.0vdc 5 a 92% dnt12s0a0r05 nf a sip 8.3 v ~ 14 vdc 0.75 v ~ 5.0vdc 5 a 92% dnt12s0a0r05 p f a sip 8.3 v ~ 14 vdc 0.75 v ~ 5.0vdc 5 a 92% c ontac t: www.deltaww.com/dcdc usa: telephone: east coast: 978 - 656 - 3993 west coast: 510 - 668 - 5100 fax: (978) 656 3964 email: dcdc@delta - corp.com europe: p hone: +31 - 20 - 655 - 096 7 fax: +31 - 20 - 655 - 0999 email: dcdc @ delta - es.com asia & the rest of world : telephone: +886 3 4526107 ext 6220 - 6224 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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