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delta electronics, inc. datasheet ds_dnk12sip_06042012 features ? high efficiency: 95% @ 12vin, 5v/30a out (sip) ? small size and low profile: 50.8x12.7x14.0 mm (2.00?x0.50?x0.55?) ? standard footprint ? pre-bias startup ? output voltage tracking ? no minimum load required ? voltage and resistor-based trim ? output voltage programmable from 0.8vdc to 5.5vdc via external resistor ? fixed frequency operation ? input uvlo, output otp, ocp ? remote on/off ? remote sense ? current sharing (optional) ? iso 9000, tl 9000, iso 14001 certified manufacturing facility ? ul/cul 60950-1 (us & canada) recognized applications ? telecom / datacom ? distributed power architectures ? servers and workstations ? lan / wan applications ? data processing applications delphi series dnk12, non-isolated, point of load dc/dc power modules: 6~14vin, 0.8v~5.5v/30aout the delphi series dnk12, 6v~14v input, 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 electronics, inc. the dnk12 series provides a programmable output voltage from 0.8v to 5.5v by using an external resistor. the dnk converters have flexible and programmable tracking and sequencing features to enable a variety of startup voltages as well as sequencing and tracking between power modules. this product family is available in a surface mount or sip package and provides up to 30a of current in an industry standard footprint. with creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performance and extremely high reliability under highly stressful operating conditions.
ds_dnk12sip_06042012 2 technical specifications t a = 25c, airflow rate = 300 lfm, v in = 10vdc and 14vdc, nominal vout unless otherwise noted. parameter notes and conditions dnk12s0a0r30 min. typ. max. units absolute maximum ratings input voltage (continuous) 0 15 vdc tracking voltage 0 vin,max vdc operating ambient temperature -40 85 c storage temperature -55 125 c input characteristics operating input voltage vo<= 3.3v 6 12 14 v vo>3.3v 8.3 12 14 v input under-voltage lockout turn-on voltage threshold 5.2 v turn-off voltage threshold 4.8 v maximum input current vin=vin,min to vin,max, io=io,max 27 a no-load input current 150 ma off converter input current vin=12v 25 40 ma inrush transient vin= 10.2~13.8v, io=io,min to io,max 1 a 2 s recommended input fuse 50 a output characteristics output voltage set point with a 1% trim resistor -1.5 vo,set +1.5 % vo,set output voltage adjustable range 0.8 5.5 v over load io=io,min to io,max -0.4 0.4 % vo,set total output voltage range over sample load, line and temperature -3.0 +3.0 % vo,set output voltage ripple and noise 5hz to 20mhz bandwidth with 0.01uf//0.1uf//10uf ceramic peak-to-peak vo<=2.5v, io=io,max 25 50 mv vo=3.3v, io=io,max 75 mv vo=5v, io=io,max 100 mv rms vin= vin,min to vin,max, io=io,max 8 mv output current range 0 30 a output voltage over-shoot at start-up vin=12v, turn on 3 % vo,set output dc current-limit inception hiccup mode 160 % io dynamic characteristics dynamic load response 10f tan & 1f ceramic load cap, 1a/s, 5vout positive ste p chan g e in out p ut current 50% io,max to 100% io,max 350 mv negative step change in output current 100% io,max to 50% io,max 350 mv setting time to 10% 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 3 ms start-up time, from input vin=vin,min, vo=10% of vo,set 3 ms output voltage rise time time for vo to rise from 10% to 90% of vo,set 4 ms maximum output startup capacitive load full load; esr ? 1m ? 2000 f full load; esr ? 10m ? 10000 f efficiency vo=0.8v vin=12v, io=io,max 82 % vo=1.2v vin=12v, io=io,max 85 % vo=1.5v vin=12v, io=io,max 89 % vo=1.8v vin=12v, io=io,max 90.5 % vo=2.5v vin=12v, io=io,max 93 % vo=3.3v vin=12v, io=io,max 94 % vo=5.0v vin=12v, io=io,max 95 % feature characteristics switching frequency 300 khz on/off control, (negative logic) logic low voltage module on, von/off -0.3 1.2 v logic high voltage module off, von/off 3 vin,max v logic low current module on, ion/off 10 ua logic high current module off, ion/off 0.2 1 ma tracking slew rate capability vin= vin,min to vin,max, io=io,min to io,max, vseq ds_dnk12sip_06042012 3 electrical characteristics curves figure 1: converter efficiency vs. output current (0.8v output voltage) figure 2: converter efficiency vs. output current (1.2v output voltage) figure 3: converter efficiency vs. output current (1.5v output voltage) figure 4: converter efficiency vs. output current (1.8v output voltage) figure 5: converter efficiency vs. output current (2.5v output voltage) figure 6: converter efficiency vs. output current (3.3v output voltage)
ds_dnk12sip_06042012 4 figure 7 : converter efficiency vs. output current ( 5 v output voltage) figure 8 : output ripple & noise at 12vin, 0.8v/30a out 20mv/div, 2us/div figure 9 : output ripple & noise at 12vin, 1. 2 v/30a out 20mv/div, 2us/div figure 10 : output ripple & noise at 12vin, 1.5v/30a out 20mv/div, 2us/div figure 11 : output ripple & noise at 12vin, 1.8v/30a out 20mv/div, 2us/div figure 12 : output ripple & noise at 12vin, 2.5v/30a out 20mv/div, 2us/div
ds_dnk12sip_06042012 5 figure 1 3 : output ripple & noise at 12vin, 3.3v/30a out 20mv/div, 2us/div figure 1 4 : output ripple & noise at 12vin, 5 v/30a out 20mv/div, 2us/div figure 1 5 : turn on delay time at 12vin, 0.8v/30a out top: 0.5v/div, 2ms/div, bottom: 10v/div, 2ms/div figure 1 6 : turn on delay time at 12vin, 1.2v/30a out top: 1v/div, 2ms/div, bottom: 10v/div, 2ms/div figure 1 7 : turn on delay time at 12vin, 3.3v/30a out top: 2v/div, 2ms/div, bottom: 10v/div, 2ms/div figure 1 8 : turn on delay time at 12vin, 5v/30a out top: 5v/div, 2ms/div, bottom: 10v/div, 2ms/div
ds_dnk12sip_06042012 6 figure 1 9 : turn on delay time at remote on/off, 0.8v/30a out top: 0.5v/div, 2ms/div, bottom: 10v/div, 2ms/div figure 20 : turn on delay time at remote on/off, 1.2v/30a out top: 1v/div, 2ms/div, bottom: 10v/div, 2ms/div figure 21 : turn on delay time at remote on/off, 3.3v/30a out top: 2v/div, 2ms/div, bottom: 10v/div, 2ms/div figure 22 : turn on delay time at remote on/off, 5v/30a out top: 5v/div, 2ms/div, bottom: 10v/div, 2ms/div figure 23 : typical transient response to step load change at 1a/s from 25% to 75% of io, max at 12vin, 0.8v out (cout = 1uf ceramic, 10f tantalum) top:100mv/div, 50us/div, bottom: 20a/div, 50us/div figure 24 : typical transient response to step load change at 1a/s from 25% to 75% of io, max at 12vin, 1.2v out (cout = 1uf ceramic, 10f tantalum) top:100mv/div, 50us/div, bottom: 20a/div, 50us/div
ds_dnk12sip_06042012 7 electrical characteristics curves figure 25 : typical transient response to step load change at 5a/s from 25% to 75% of io, max at 12vin, 3.3v out (cout = 1uf ceramic, 10f tantalum) top:100mv/div, 50us/div, bottom: 20a/div, 50us/div figure 26 : typical transient response to step load change at 5a/s from 25% to 75% of io, max at 12vin, 5v out (cout = 1uf ceramic, 10f tantalum) top:100mv/div, 50us/div, bottom: 20a/div, 50us/div figure 27 : output short circuit current 12vin, 1.2vout top: 1v/div, 5ms/div, bottom: 20a/div, 5ms/div figure 29 : turn on with prebias 12vin,0.8v/0a out, vbias =0.5vdc top: 0.5v/div, 2ms/div, bottom: 5v/div, 2ms/div figure 28 : output short circuit current 12vin, 3.3vout top: 1v/div, 5ms/div, bottom: 20a/div, 5ms/div figure 30 : turn on with prebias 12vin,1.2v/0a out, vbias =0.79vdc top: 1v/div, 2ms/div, bottom: 5v/div, 2ms/div
ds_dnk12sip_06042012 8 figure 31 : turn on with prebias 12vin,3.3v/0a out, vbias =2.2vdc top: 2v/div, 2ms/div, bottom: 5v/div, 2ms/div figure 32 : turn on with prebias 12vin, 5v/0a out, vbias =3.3vdc top: 2v/div, 2ms/div, bottom: 5v/div, 2ms/div
ds_dnk12sip_06042012 9 test configurations v i (+) v i (-) battery 2 100uf tantalum l to oscilloscope note: input reflected-ripple current is measured with a simulated source inductance. current is measured at the input of the module. figure 33: input reflected-ripple test setup vo gnd copper strip 10uf tantalum 1uf ceramic scope resistive load note: use a 10 f tantalum and 1 f capacitor. scope measurement should be made using a bnc connector. figure 34: peak-peak output noise and startup transient measurement test setup supply i vi vo gnd io load contact and distribution losses contact resistance figure 35: 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 contact resistance. % 100 ) ( = i i vi io vo design considerations 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 selv 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 maximum 50a of glass type fast-acting fuse in the ungrounded lead. 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.
ds_dnk12sip_06042012 10 features descriptions remote on/off the dnk series power modules have an on/off pin for remote on/off operation. only negative on/off logic option is available in the dnk series power modules. for negative logic module, the on/off pin is suggested to be pulled high with an external pull-up resistor (see figure 36). 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) vo vin on/off gnd rpull-up rl i on/off figure 36: 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. over-temperature protection the over-temperature protection consists of circuitry that provides protection from thermal damage. if the temperature exceeds the over-temperature threshold the module will shut down. the module will restart once the temperature is within specification remote sense the dnk provide vo remote sensing to achieve proper regulation at the load points and reduce effects of distribution losses on output line. in the event of an open remote sense line, the module shall maintain local sense regulation through an internal resistor. features descriptions (con.) rl distribution losses distribution losses distribution losses distribution losses vo vin gnd sense figure 37: effective circuit configuration for remote sense operation output voltage programming the output voltage of the dnk can be programmed to any voltage between 0.8vdc and 5.5vdc by connecting one resistor (shown as rtrim in figure 38) between the trim and gnd pins of the module. without this external resistor, the output voltage of the module is 0.8 vdc. to calculate the value of the resistor rtrim for a particular output voltage vo, please use the following equation: rtrim 1200 vo 0.80 ? 100 ? ? ? ? ? ? ? ? := rtrim is the external resistor in ? vo is the desired output voltage vo trim gnd rload rtrim figure 38: circuit configuration for programming output voltage using an external resist
ds_dnk12sip_06042012 11 features descriptions (con.) table 1 provides rtrim values required for some common output voltages. by using a 0.5% tolerance trim resistor, set point tolerance of 1.5% can be achieved as specified in the electrical specification. table 1 vo (v) rtrim ( ? ) 0.8 open 1.2 2900 1.5 1614 1.8 1100 2.5 606 3.3 380 5.0 185.7 voltage margining output voltage margining can be implemented in the dnk 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 39 shows the circuit configuration for output voltage 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. vo on/off vin gnd trim q2 q1 rmargin-up rmargin-down rtrim figure 39: circuit configuration for output voltage margining features descriptions (con.) voltage tracking the dnk family was designed for applications that have output voltage tracking requirements during power-up and power-down. the devices have a track pin to implement three types of tracking method: sequential, simultaneous and ratio-metric. track simplifies the task of supply voltage tracking in a power system by enabling modules to track each other, or any external voltage, during power-up and power-down. by connecting multiple modules together, customers can get multiple modules to track their output voltages to the voltage applied on the track pin. the dnk family has option code a for track function. the output voltage track characteristic can be achieved when the output voltage of ps2 follows the output voltage of ps1 on a volt-to-volt basis. figure 40: simultaneous tracking simultaneous tracking (figure 40) is implemented by using a voltage divider around the track pin. the objective is to minimize the voltage difference between the power supply outputs during power up and down. for type a (dnx0a0xxxx a ), the simultaneous tracking can be accomplished by connecting vo ps1 to the track pin of ps2 where the voltage divider is inside the ps2.
ds_dnk12sip_06042012 12 thermal considerations thermal 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 transfer. hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. thermal testing setup delta?s dc/dc power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered 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 25.4mm (1??). thermal derating heat can be removed by increasing airflow over the module. to enhance system reliability, the power 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. air flow modu le pw b 50.8(2.00") air velocity a nd am bi e nt temperature sured below the module fan cing pwb note: wind tunnel test setup figure dimensions are in millimeters and (inches) figure 42: wind tunnel test setup thermal curves hot spot ntc resistor airflow figure 43: * hot spot& ntc resistor temperature measured points. dnk12s0a0r30(standard) output current vs. ambient temperature and air velocity @vin=12v vout=0.8v (through pcb orientation) 0 5 10 15 20 25 30 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection output current (a) ambient temperature ( j ) 100lfm 200lfm 400lfm 300lfm 500lfm 600lfm figure 44: output current vs. ambient temperature and air velocity @ vin=12v, vout=0.8v (through pcb orientation, airflow from pin1 to pin13) dnk12s0a0r30(standard) output current vs. ambient temperature and air velocity @vin=12v vout=1.8v (through pcb orientation) 0 5 10 15 20 25 30 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection output current (a) ambient temperature ( ? ) 100lfm 200lfm 400lfm 300lfm 500lfm 600lfm figure 45: output current vs. ambient temperature and air velocity @ vin=12v, vout=1.8v (through pcb orientation, airflow from pin1 to pin13)
ds_dnk12sip_06042012 13 thermal curves dnk12s0a0r30(standard) output current vs. ambient temperature and air velocity @vin=12v vout=3.3v (through pcb orientation) 0 5 10 15 20 25 30 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection output current (a) ambient temperature ( ? ) 100lfm 200lfm 400lfm 300lfm 600lfm 500lfm figure 46: output current vs. ambient temperature and air velocity @ vin=12v, vout=3.3v (through pcb orientation, airflow from pin1 to pin13) dnk12s0a0r30(standard) output current vs. ambient temperature and air velocity @vin=12v vout=5.0v (through pcb orientation) 0 5 10 15 20 25 30 25 30 35 40 45 50 55 60 65 70 75 80 85 natural convection output current (a) ambient temperature ( j ) 100lfm 200lfm 400lfm 300lfm 600lfm 500lfm figure 47: output current vs. ambient temperature and air velocity @ vin=12v, vout=5.0v (through pcb orientation, airflow from pin1 to pin13)
ds_dnk12sip_06042012 14 mechanical drawing note: all pins are copper alloy with matte-tin(pb free) plated over nickel underplating.
ds_dnk12sip_06042012 15 part numbering system dnk 12 s 0a0 r 30 n f a product family input voltage number of outputs output voltage package type output current on/off logic option code dnk - 30a 12 - 6.0v ~ 14v s - single 0a0 - programmable r - sip 30 - 30a n - negative f- rohs 6/6 (lead free) space - rohs 5/6 a - standard function w/o current sharing b - with current sharing model list model name package input voltage output voltage output current efficiency 12vin, 5vout @ full load dnk12s0a0r30nfa sip 6.0v ~ 14vdc 0.8v ~ 5.0vdc 30a 95% dnk12s0a0r30n a sip 6.0v ~ 14vdc 0.8v ~ 5.0vdc 30a 95% contact: www.delta.com.tw/dcdc usa: telephone: east coast: 978-656-3993 west coast: 510-668-5100 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 any patent or patent rights of delta. delta reserves the right to revise these specifications at any time, without notice .

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