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datasheet ds_d12f200_11042008 features ? high efficiency: 94% @ 12vin, 5.0v/40a out ? wide input range: 4.5v~13.8v ? output voltage programmable from 0.6vdc to 5.0vdc via external resistors ? no minimum load required ? fixed frequency operation ? input uvlo, output scp, ovp. ? remote on/off (positive logic) ? power good function ? rohs 5 / rohs 6 ? iso 9001, tl 9000, iso 14001, qs9000, ohsas18001 certified manufacturing facility applications ? telecom / datacom ? distributed power architectures ? servers and workstations ? lan / wan applications ? data processing applications options delphi d12f200 non-isolated point of load dc/dc modules: 4.5v~13.8vin, 0.6v~5.0vout, 40a the d12f200, 4.5~13.8v wide input, single output, non-isolated point of load dc/dc converter is the latest offering from a world leader in power systems technology and manufactu ring -- delta electronics, inc. the d12f200 and nd/ne product families are part of the second generation, non-isolated point-of-load dc/dc power modules which cut the module size by almost 50% in most of the cases compared to the first generation nc series pol modules for networking and data communication applications. d12f200 product provides up to 40a output current and the output can be re sistor trimmed from 0.6vdc to 5.0vdc. it provides a highly effici ent, high power and current density and very cost effective point of load solution. with creative design technology and optimization of component placement, these converters possess outstanding elec trical and thermal performance, as well as extremely high reliability under highly stressful operating conditions.
ds_d12f200_11042008 2 technical specifications (ambient temperature=25c, nominal v in =12vdc unless otherwise specified.) parameter notes and conditions d12f200 min. typ. max. units absolute maximum ratings input voltage -0.3 13.8 vdc operating temperature refer to fig.37 for the measuring point 0 70 c storage temperature -40 125 c input characteristics operating input voltage 4.5 13.8 v input under-voltage lockout turn-on voltage threshold 4.3 vdc turn-off voltage threshold 4.0 vdc maximum input current vin=12v, vo=5v, io=40a 18 a no-load input current vin=12v, vo=5v, io=40a 260 300 ma off converter input current remote off 17 20 ma output characteristics output voltage adjustment range refer to fig.19 for the relations between input and output voltage 0.6 5.0 vdc output voltage set point with a 0.1% trim resistor -1.0 +1.0 %vo output voltage regulation over load vo Q 1.2vdc -20 +20 mv vo 1.2vdc -1.5 +1.5 %vo over line vin=vin_min to vin_max -0.5 +0.5 %vo total output range over load, line, temperature regulation and set point -3.0 +3.0 %vo output voltage ripple and noise 5hz to 20mhz bandwidth peak-to-peak full load, 10uf tan cap, total input & output range 20 50 mv output current range 0 40 a output voltage under-shoot at power-off vin=12v, turn off 100 mv output short-circuit current, rms value 12vin, 5vout 10 a over current protection hiccup mode 70 a over voltage protection hiccup mode 120 % dynamic characteristics transient response 25% step load, slew rate=10a/us, 0.6v~1.8v output 120 150 mvpk 25% step load, slew rate=10a/us, 2.5v~ 5.0v output 130 160 mvpk output dynamic load response 12vin, 2.5vout, 1f ceramic and 10f tan cap settling time settling to be within regulation band (to 10% vo deviation) 20 50 s turn-on transient rise time from 10% to 90% of vo 8 15 ms turn on delay (power) vin=12v, io=min-max. (wthin 10% of vo) 13 25 ms turn on delay (remote on/off) vin=12v, io=min-max. (wthin 10% of vo) 13 20 ms turn on transient (overshoot) 0.5% vo turn off transient (undershoot) 100 mv maximum output capacitance esr 10m ? 0 20000 f esr < 10m ? 0 5000 f efficiency vo=0.6v vin=12v, io=40a 70 71.4 % vo=0.9v vin=12v, io=40a 78 79.4 % vo=1.2v vin=12v, io=40a 81 83.5 % vo=1.5v vin=12v, io=40a 84 85.9 % vo=1.8v vin=12v, io=40a 85 87.5 % vo=2.5v vin=12v, io=40a 88 90.4 % vo=3.3v vin=12v, io=40a 90 92.2 % vo=5.0v vin=12v, io=40a 92 94.0 % feature characteristics switching frequency fixed, per phase 500 khz on/off control positive logic (internally pulled high) logic high module on (or leave the pin open) 1.2 vinmax v logic low module off 0 0.6 v remote sense range 0.5 v power good vo is out off +/-10% vo,set 0 0.4 v vo is within +/-10% vo,set 4.0 5.1 v power good delay 0.2 2 ms output to power good delay time 1 ms general specifications calculated mtbf 25 , 300lfm, 80% load 5.6 mhours weight 14 grams
ds_d12f200_11042008 3 electrical characteristics curves 60 65 70 75 80 85 90 0 5 10 15 20 25 30 35 40 output current, io (a) efficiency (%) 5vin 12vin 13.8vin 65 70 75 80 85 90 95 0 5 10 15 20 25 30 35 40 output current, io (a) efficiency (%) 5vin 12vin 13.8vin figure 1: converter efficiency vs. output current (0.9v output voltage, 5v&12v input) figure 2: converter efficiency vs. output current (1.2v output voltage, 5v&12v input) 70 75 80 85 90 95 100 0 5 10 15 20 25 30 35 40 output current, io (a) efficiency (%) 5vin 12vin 13.8vin 70 75 80 85 90 95 100 0 5 10 15 20 25 30 35 40 output current, io (a) efficiency (%) 5vin 12vin 13.8vin figure 3: converter efficiency vs. output current (1.8v output voltage, 5v&12v input) figure 4: converter efficiency vs. output current (2.5v output voltage, 5v&12v input) 70 75 80 85 90 95 100 0 5 10 15 20 25 30 35 40 output current, io (a) efficiency (%) 7vin 12vin 13.8vin 70 75 80 85 90 95 100 0 5 10 15 20 25 30 35 40 output current, io (a) efficiency (%) 9vin 12vin 13.8vin figure 5: converter efficiency vs. output current (3.3v output voltage, 12v input) figure 6: converter efficiency vs. output current (5.0v output voltage, 12v input)
ds_d12f200_11042008 4 electrical characteristics curves (continued) figure 7: output ripple & noise at 12vin, 0.9v/40a out (10mv/div, 2us/div) figure 8: output ripple & noise at 12vin, 1.2v/40a out (10mv/div, 2us/div) figure 9: output ripple & noise at 12vin, 1.8v/40a out (10mv/div, 2us/div) figure 10: output ripple & noise at 12vin, 2.5v/40a out (10mv/div, 2us/div) figure 11: output ripple & noise at 12vin, 3.3v/40a out (10mv/div, 2us/div) figure 12: output ripple & noise at 12vin, 5.0v/40a out (10mv/div, 2 u s/div)
ds_d12f200_11042008 5 electrical characteristics curves (continued) figure 13: turn on delay time at 12vin, 0.9v/40a out (1ms/div) ch1: enable, ch2: pg, ch3: vo figure 14: turn on delay time at 12vin, 1.2v/40a out (1ms/div) ch1: enable, ch2: pg, ch3: vo figure 15: turn on delay time at 12vin, 1.8v/40a out (1ms/div) ch1: enable, ch2: pg, ch3: vo figure 16: turn on delay time at 12vin, 2.5v/40a out (1ms/div) ch1: enable, ch2: pg, ch3: vo figure 17: turn on delay time at 12vin, 3.3v/40a out (1ms/div) ch1: enable, ch2: pg, ch3: vo figure 18: turn on delay time at 12vin, 5.0v/40a out (1ms/div) ch1: enable, ch2: pg, ch3: vo
ds_d12f200_11042008 6 electrical characteristics curves (continued) figure 19: transient response at 12vin, 0.9v/40a out (1ms/div) ch1: vo, ch2: io, 10a/div figure 20: transient response at 12vin, 1.2v/40a out (1ms/div) ch1: vo, ch2: io, 10a/div figure 21: transient response at 12vin, 1.8v/40a out (1ms/div) ch1: vo, ch2: io, 10a/div figure 22: transient response at 12vin, 2.5v/40a out (1ms/div) ch1: vo, ch2: io, 10a/div figure 23: transient response at 12vin, 3.3v/40a out (1ms/div) ch1: vo, ch2: io, 10a/div figure 24: transient response at 12vin, 5.0v/40a out (1ms/div) ch1: vo, ch2: io, 10a/div
ds_d12f200_11042008 7 electrical characteristics curves (continued) figure 25: short circuit protection at 12vin, 0.9v out (1ms/div), ch1: vo, ch2: io, 50a/div figure 26: short circuit protection at 12vin, 1.2v out (1ms/div), ch1: vo, ch2: io, 50a/div figure 27: short circuit protection at 12vin, 1.8v out (1ms/div), ch1: vo, ch2: io, 50a/div figure 28: short circuit protection at 12vin, 2.5v out (1ms/div), ch1: vo, ch2: io, 50a/div figure 29: short circuit protection at 12vin, 3.3v out (1ms/div), ch1: vo, ch2: io, 50a/div figure 30: short circuit protection at 12vin, 5.0v out (1ms/div), ch1: vo, ch2: io, 50a/div
ds_d12f200_11042008 8 features descriptions enable (on/off) the enable (on/off) input allows external circuitry to put the d12f200 converter into a low power dissipation (sleep) mode. positive enable is available as standard. positive enable units of the d12f200 series are turned on if the enable pin is high or floating. pulling the pin low will turn off the unit. with the active high function, the output is guaranteed to turn on if the enable pin is driven above 1.2v. the output will turn off if the enable pin voltage is pulled below 0.6v. input under-voltage lockout the input under-voltage lockout prevents the converter from being damaged while operating when the input voltage is too low. the under-voltage lockout is adjustable by adding a resistor (figure 32) between enable pin and ground pin per the following equation: 8 . 3 14 315 ) ( re + = ven k n default lockout range is between 4.3v and 4.0v. unit vin vout enable trim(+) gnd gnd ren figure 32: enable input drive circuit example. reflected ripple current and output ripple and noise measurement the measurement set-up outlined in figure 33 has been used for both input reflected/ terminal ri pple current and output voltage ripple and noise measurements on d12f200 converters. dc-dc converter 1uf ceramic ta n 10uf vin+ load ltest cs cin output voltage ripple noise measurement point input reflected current measurement point cs=330 f os-con cap x1, ltest=1 h, cin=330 f os-con cap x1 figure 33: input reflected ripple/ capacitor ripple current and output voltage ripple and noise measurement setup for d12f200 design considerations the d12f200 uses a two phase and voltage mode controlled buck topology. the output can be trimmed in the range of 0.6vdc to 5.0vdc by a resistor from trim pin to ground. the converter can be turned on/off by remote control. positive on/off (enable pin) logic implies that the converter dc output is enabled when the signal is driven high (greater than 1.2v) or floating and disabled when the signal is driven low (below 0.6v). the converter provides an open collector power good signal. the power good signal is pulled low when output is not within 10% of vout or enable is off. for output voltages above 1.8v, please refer to figure 31 below for minimum input voltage requirement for proper module operations. the converter can protect itse lf by entering hiccup mode against over current and short circuit condition. safety considerations it is recommended that the user to provide a fuse in the input line for safety. the output voltage set-point and the output current in the application could define the amperage rating of the fuse. 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 input voltage( v) output voltage(v) vo=5v vo=0. 6v vo=3. 3v vo=2. 5v vo=1. 8v figure 31: minimum input voltage required for output voltages above 1.8v
ds_d12f200_11042008 9 features descriptions (con.) over-current and short-circuit protection the d12f200 modules have non-latching over-current and short-circuit protection circuitry. when over current condition occurs, the module goes into the non-latching hiccup mode. when the over-current condition is removed, the module will resume normal operation. an over current condition is detected by measuring the voltage drop across the inductor. the voltage drop across the inductor is also a function of the inductor?s dcr. note that none of the module specifications are guaranteed when the unit is operated in an over-current condition. output over voltage protection (ovp) the converter will shut down when an output over voltage protection is detected. once the ovp condition is detected, controller will stop all pwm outputs and turn on low-side mosfet to prevent any damage to load. remote sense the d12f200 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. the module shall correct for a total of 0.5v of loss. the remote sense connects as shown in figure 34. figure 34: circuit configuration for remote sense output capacitance there are internal output capac itors on the d12f200 modules. hence, no external output capacitor is required for stable operation. output voltage programming the output voltage of the d12f200 is trimmable by connecting an external resistor between the trim pin and output ground as shown figure 35 and the typical trim resistor values are shown in table 1. unit vin vout enable trim(+) gnd gnd rtrim figure 35: trimming output voltage the d12f200 module has a trim range of 0.6v to 5.0v. the trim resistor equation for the d12f200 is: 6 . 0 1200 ) ( ? = vout rtrim vout is the output voltage setpoint rtrim is the resistance between trim and ground rtrim values should not be less than 270 ? output rtrim ( ? ) 0.6v open +0.9 v 4k +1.2v 2k +1.5 v 1.33k +1.8v 1k +2.5 v 631.6 +3.3 v 444.4 +5.0v 272.7 table 1: typical trim resistor values p ower good the converter provides an open collector signal called power good. this output pin uses positi ve logic and is open collector. this power good output is able to sink 4ma and set high when the output is within 10% of output set point. the power good signal is pulled low when output is not within 10% of vout or enable is off. paralleling d12f200 converters do not have built-in current sharing (paralleling) ability. hence, paralleling of multiple d12f200 converters is not recommended .
ds_d12f200_11042008 10 thermal curves figure 37: temperature measurement location* the allowed maximum hot spot temper ature is defined at 125 D12F200A output current vs. ambient temperature and air velocity @ vin =12v, vout =5v (worst orientation) 0 5 10 15 20 25 30 35 40 45 25 35 45 55 65 75 85 ambient temperature ( ) output current (a) 200lfm 600lfm 100lfm 300lfm 500lfm natural convection 400lfm figure 38: output current vs. ambient temperature and air velocity @vin=12v, vout=5.0v (airflow from pin1 to pin11) D12F200A output current vs. ambient temperature and air velocity @ vin =12v, vout =3.3v (worst orientation) 0 5 10 15 20 25 30 35 40 45 25 35 45 55 65 75 85 ambient temperature ( ) output current (a) 200lfm 600lfm 100lfm 300lfm 500lfm natural convection 400lfm figure 39: output current vs. ambient temperature and air velocity@ vin=12v, vout=3.3v (worst orientation) thermal consideration 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 modul e. 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 t hat simulate the thermal environments encountered in most electronics equipment. this type of equipment commonly uses vertically mounted circuit card s 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 space between the neighboring pwb and the top of the power modul e is constantly kept at 6.35mm (0.25??). 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. module a ir flow 11 (0.43?) 50.8 (2.0?) facing pwb pwb air velocity and ambient temperature measured below the module 22 (0.87?) note: wind tunnel test setup figure dimensions are in millimeters and (inches) figure 36: wind tunnel test setup
ds_d12f200_11042008 11 thermal curves D12F200A output current vs. ambient temperature and air velocity @ vin =12v, vout =2.5v (worst orientation) 0 5 10 15 20 25 30 35 40 45 25 35 45 55 65 75 85 ambient temperature ( ) output current (a) 200lfm 600lfm 100lfm 300lfm 500lfm natural convection 400lfm figure 40: output current vs. ambient temperature and air velocity@ vin=5.0v, vout=2.5v (worst orientation) D12F200A output current vs. ambient temperature and air velocity @ vin =12v, vout =1.8v (worst orientation) 0 5 10 15 20 25 30 35 40 45 25 35 45 55 65 75 85 ambient temperature ( ) output current (a) 200lfm 600lfm 100lfm 300lfm 500lfm natural convection 400lfm figure 41: output current vs. ambient temperature and air velocity @vin=12v, vout=1.8v (worst orientation) D12F200A output current vs. ambient temperature and air velocity @ vin =12v, vout =1.5v (worst orientation) 0 5 10 15 20 25 30 35 40 45 25 35 45 55 65 75 85 ambient temperature ( ) output current (a) 200lfm 600lfm 100lfm 300lfm 500lfm natural convection 400lfm figure 42: output current vs. ambient temperature and air velocity@ vin=5.0v, vout=1.5v (worst orientation) D12F200A output current vs. ambient temperature and air velocity @ vin =12v, vout =1.2v (worst orientation) 0 5 10 15 20 25 30 35 40 45 25 35 45 55 65 75 85 ambient temperature ( ) output current (a) 200lfm 600lfm 300lfm 500lfm 100lfm 400lfm natural convection figure 43: output current vs. ambient temperature and air velocity @vin=12v, vout=1.2v (worst orientation) D12F200A output current vs. ambient temperature and air velocity @ vin =12v, vout =0.9v (worst orientation) 0 10 20 30 40 50 60 70 25 35 45 55 65 75 85 ambient temperature ( ) output current (a) 200lfm 600lfm 100lfm 300lfm 500lfm natural convection 400lfm figure 44: output current vs. ambient temperature and air velocity@ vin=12v, vout=0.9v (worst orientation)
ds_d12f200_11042008 12 mechanical drawing notes: 1. dimensions are in millimeters and (inches). 2. tolerances: x.xmm0.5mm (x.xx in. 0.02 in.) x.xxmm0.25mm (x.xxx in. 0.010 in.)
ds_d12f200_11042008 13 part numbering system d 12 f 200 a type of product input voltage product series output option code d - dc/dc modules 12 - 4.5 ~13.8v 200 - 200w/40a a - standard model list model name input voltage output voltage output current lead free efficiency, 12vin D12F200A 4.5v~ 13.8vdc 0.6v ~ 5.0v 40a rohs 6 94% @ 5v/40a d12f200b 4.5v~ 13.8vdc 0.6v ~ 5.0v 40a rohs 5 94% @ 5v/40a 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 ext. 6220~6224 fax: +886 3 4513485 email: dcdc@delta.com.tw warranty delta offers a two (2) year limited warranty. complete warr anty 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 othe r rights of third parties, which may result from its use. no license is granted by implication or otherwise under any patent or patent ri ghts of delta. delta reserves the right to revise these specifications at any time, without notice .

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