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dc m 04s0a0s 12p fa ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www.deltaww.com/dcdc p1 features ? high efficiency: 95% @ 5.0vin, 3.3v/12a out ? small size and low profile: 20.3 x 11.4 x 8.5 mm ( 0.8 x 0.4 5 x 0. 33 ) ? surface mount packaging ? standard footprint ? voltage and resistor - based trim ? pre - bias startup ? output voltage tracking ? no minimum load required ? output voltage programmable from 0. 6 vdc to 3.3vdc via external resistor ? fixed frequency operation ? input uvlo, output ocp ? remote on/off ? iso 9001, tl 9000, iso 14001, qs9000, ohsas18001 certified manufacturing facility ? ul/cul 6 0950 - 1 (us & canada) delphi dcm, non - isolated point of load dc/dc power modules: 2. 4 - 5.5vin, 0.6 - 3.3v/12aout the delphi series dcm, 2. 4 - 5.5v input, single output, non - isolated point of lo ad dc/dc converters are the latest offering from a world leader in power systems technology and manufacturing -- delta electronics, inc. the dcm series provides a programmable output voltage from 0. 6 v to 3.3v using an external resistor and has flexible and programmable tracking features to enable a variety of startup voltages as well as tracking between power modules. this product family is available in surface mount and provides up to 12a of output current in an industry standard footprint. with creative d esign technology and optimization of component placement, these converters possess outstanding electrical and thermal performance, as well as extremely high reliability under highly stressful operating conditions. options ? negative on/off logic ? tracking feature applications ? telecom / datacom ? distributed power architectures ? servers and workstations ? lan / wan applications ? data processing applications ?
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 2 technical specificat ions parameter notes and conditions dc m 04s0a0s 12p fa min. typ. max. units abso lute maximum ratings input voltage (continuous) - 0.3 6 vdc tracking voltage - 0.3 vin,max vdc operating ambient temperature - 40 85 storage temperature - 55 125 c input characteristics operating input voltage vo Q vin C 0.6 2.4 5.5 v input under - voltage lockout turn - on voltage threshold 2.2 v turn - off voltage threshold 2.0 v maximum input current vin=2.4v to 5.5v, io=io,max 11 a no - load input current vin=5v 50 ma off converter input current vin=5v 5 ma inrush transient 1 a2s input reflected ripple current, peak - to - peak (5hz to 20mhz, 1h source impedance; vin =0 to 5.5v, io= iomax ; 49 map - p i nput ripple rejection (120hz) - 30 db output characteristics output voltage set point with 0.5% tolerance for external resistor used to set output voltage) - 1.5 vo,set +1.5 % vo,set output voltage adjustable range 0.6 3.3 v output voltage regu lation over line for vo>=2.5v 0.4 % vo,set for vo<2.5v 10 mv over load for vo>=2.5v 15 mv for vo<2.5v 10 mv over temperature ta= - 40 to 85 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 peak - to - peak full load, 0.1f ceramic, 10f ceramic 25 35 mv rms full load, 0. 1f ceramic, 10f ceramic 10 15 mv output current range 0 12 a output voltage over - shoot at start - up vout=3.3v 3 % vo,set output dc current - limit inception hiccup mode 250 % io max output short - circuit current (hiccup mode) io,s/c 2.4 adc dynami c characteristics dynamic load response 10f ceramic & 0. 1f ceramic load cap, 2.5 a/s,co=47u,vin=5v,vo=1.8v positive step change in output current 0 - 50% iomax 200 mv negative step change in output current 50% iomax - 0 200 mv settling time to 10% of peak deviation 20 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 3 5 ms output capacitive load full load; esr R 0.15m 47 800 f efficiency vo=3.3v vin=5v, 100% load 95.0 % vo=2.5v vin=5v, 100% load 94.0 % vo=1.8v vin=5v, 100% load 91.5 % vo=1.5v vin=5v, 100% load 90.0 % vo=1.2v vin=5v, 100% load 89.0 % vo=0. 6 v vin=5v, 100% load 81.0 % fe ature characteristics switching frequency 6 00 khz on/off control, (negative logic) logic low voltage module on, von/off - 0.2 vin - 1.6 v logic high voltage module off, von/off vin - 0.8 vin,max v logic low current module on, ion/off 200 a logic high current module off, ion/off 1 ma on/off control, (positive logic) logic high voltage module on, von/off 1.6 vin,max v logic low voltage module off, von/off - 0. 3 0.3 v logic low current module on, ion/off 1 ma logic high cu rrent module off, ion/off 10 a tracking slew rate capability 0.1 2 v/msec tracking delay time delay from vin.min to application of tracking voltage 10 ms tracking accuracy power - up 2v/ms 100 mv power - down 1v/ms 100 mv general specific ations mtbf io=80% of io, max; ta=25c 1 m hours weight 4.8 grams (t a = 25c, airflow rate = 300 lfm, v in = 2.4 vdc to 5.5vdc, nominal vout unless otherwise noted.)
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 3 electrical character istics curves figure 1: converter efficiency vs. output current ( 0.6 v out) figu re 2: converter efficiency vs. output current ( 1.0 v out) figure 3: converter efficiency vs. output current (1. 2 v out) figure 4: converter efficiency vs. output current (1. 8 v out) figure 5: converter efficiency vs. output current ( 2.5 v out) figure 6: converter efficiency vs. output current ( 3.3 v out)
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 4 electrical character istics curves (con.) figure 7: output ripple & noise at 5 vin, 0.6 v/ 12 a out . (2us/div and 2mv/div) figure 8: output ripple & noise at 5 vin, 1.2 v/ 12 a out . (2us/div and 2mv/div) figure 9: output ripple & noise at 5 vin, 1.8 v/ 12 a out . (2us/div and 2mv/div) figure 10: output ripple & noise at 5 vin, 3.3 v/ 12 a out . (2us/div and 2mv/div) figure 11: turn on delay time at 5 vin, 0.6 v/ 12 a out (2ms/div),top trac e:vout 0.2v/div; bottom trace:vin,5v/div figure 12: turn on delay time at 5 vin, 1.2 v/ 12 a out (2ms/div),top trace:vout 0.5v/div; bottom trace:vin,5v/div
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 5 electrical character istics curves (con.) figure 13: turn on delay time at 5 vin, 1.8 v/ 12 a out (2 ms/div),top trace:vout 1v/div; bottom trace:vin,5v/div figure 14: turn on delay time at 5 vin, 3.3 v/ 12 a out (2ms/div),top trace:vout 2v/div; bottom trace:vin,5v/div figure 15: turn on delay time at remote on/off, 0.6v/ 12 a out( 1 ms/div),top trace:vout 0.2v/div; bottom trace: on/off , 2 v/div figure 16: turn on delay time at remote on/off, 3.3v/12a out(1ms/div),top trace:vout 2v/div; bottom trace: on/off,2v/div figure 17: turn on delay time at remote turn on with external capacitors (co= 800 f) 5v in, 0.6v/12a out(4ms/div) top trace:vout 0.2v/div; bottom trace:vin,5v/div figure 18: turn on delay time at remote turn on with external capacitors (co= 80 0 f) 5 vin , 3.3 v/ 12 a out ( 2 ms/div) top trace:vout 2v/div; bottom trace:vin,5v/div
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 6 electrical character istics curves f igure 19: typical transient response to step load change at 2.5 a/s from 0% to 50% to 0% of io, max at 5vin, 0.6vout ( 1 00us/div) (cout = 47uf ceramic).top trace:vout,0. 2 v/div;bottom trace:iout: 5 a/div. figure 20: typical transient response to step load change at 2.5a/s from 0% to 50% to 0% of io, max at 5vin, 1.2 vout ( 1 00us/div) (cout = 47uf ceramic).top trace:vout,0. 2 v/div;bottom trace:iout: 5 a/div. figure 21: typical transient response to step load change at 2.5a/s from 0% to 50% to 0% of i o, max at 5vin, 1.8vout (100us/div) (cout = 47uf ceramic).top trace:vout,0.2v/div;bottom trace:iout:5a/div. figure 22: typical transient response to step load change at 2.5a/s from 0% to 50% to 0% of io, max at 5vin, 3.3 vout ( 1 00us/div) (cout = 47uf ceramic).top trace:vout,0. 2 v/div;bottom trace:iout: 5 a/div. figure 2 3 : output short circuit current 5vin, 3.3 vout 10ms/div top trace:vout,0.5v/div;bottom trace:iout,20a/div figure 2 4 : tracking at 5vin , 3.3v/ 0 a out (1ms/div), tracking voltage=5v,top trace:vseq,1v/div;bottom trace:vout,1v/div
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 7 test configurations figure 2 5 : input reflected - ripple test setup note: use a 10f tantalum and 1f capacitor. scope measurement should be made using a bnc connector. figure 26 : peak - peak output noise and startup transient measurement test setup. figure 27 : output voltage and efficiency m easurement 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. design considerations input source impedance to maintain low noise and ripp le at the input voltage, it is critical to use low esr capacitors at the input to the module. a highly inductive source 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 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 20 a fuse in the ungrounded lead. input under voltage lockout at input voltages below the input under voltage lockout limit, the module operation is disabled. the module will begin to operate a t an input voltage above the under voltage lockout turn - on threshold. 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 t riggered, the unit enters hiccup mode. the units operate normally once the fault condition is removed. vo gnd copper strip 10 uf ceramic 0 . 1 uf ceramic scope resistive load supply i i v i vo gnd io load contact and distribution losses contact resistance % 100 ) ( ? ? ? ? ii vi io vo ?
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 8 features description s remote on/off the dcm series power modules have an on/off pin for remote on/off operation. both positive an d negative on/off logic options are available in the dcm series power modules . for negative logic module, connect an open collector (npn) transistor or open drain (n channel) mosfet between the on/off pin and the gnd pin (see figure 28 ). nega tive logic on /off signal turns the module on during the logic low and turns the module off during th e logic high . when the nega tive on/off function is not used, tie the pin to gnd (module will be on). for posi tive logic module, the on/off pin is pulled high with an ex ternal pull - up 5k resistor (see figure 29 ). posi tive logic on/off signal turns the module o n during logic high and turns the module o ff during logic low. if the posi tive on/off function is not used, tie the pin to vin . (module will be on) figure 28 : neg a itive remote on/off implementation figure 29 : posi tive remote on/off implementation remote sense the dcm 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 regulati on through an internal resistor. the module shall correct for a total of 0.5v of loss. the remote sense line impedance shall be < 10 ? . figure 3 0 : effective circuit configuration for remote sense operation output voltage programming the output voltage of the dcm can be programmed to any voltage between 0. 6 vdc and 3.3vdc by connecting one resistor (shown as rtrim in figure 31 ) between the trim and gnd pins of the module. without this external resistor, the output voltage of the modul e is 0. 6 vdc. to calculate the value of the resistor rtrim for a particular output voltage vo, please use the following equation: for example, to program the output voltage of the dcm module to 1.8vdc, rtrim is calculated as follo ws: figure 3 1 : circuit configuration for programming output voltage using an external resistor vo o n/o ff v in gnd q1 rl i o n /o f f vo o n/o ff v in gnd q1 rl r pull- up i o n /o ff vo sense vin gnd rl distribution losses distribution losses distribution losses distribution losses ? ? ? ? ? ? ? ? ? k vo rtrim 6 . 0 2 . 1 ? ? ? ? ? ? ? ? ? ? ? k k rtrim 1 6 . 0 8 . 1 2 . 1 vo trim gnd rload rtrim
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 9 features description s (con.) t able 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 certain restrictions apply on the output voltage set point depending on the input voltage. these are shown in the output voltage vs. input voltage set point area plot in figure 32. the upper limit curve shows that for output vol tages of 3.3v and lower, the input voltage must be lower than the maximum of 5.5v. the lower limit curve shows that for output voltages of 1.8v and higher, the input voltage needs to be larger than the minimum of 2.4v. figure 3 2 : output voltage vs. input voltage set point area plot showing limits where the output voltage can be set for different input voltages. voltage margining output voltage margining can be implemented in the dcm 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 3 3 shows the circuit configuration for output voltage margining. if unused, leave the trim pin unconnected. a calcul ation 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 3 3 : circuit configuration for output voltage margining output voltage sequencing the dcm 12v 12a modules include a sequencing feature, ez - sequence that enables users to implement various types of output voltage sequencing in their applications. this is accomplished via an additional sequencing pin. when not using the sequencing feature, either tie the seq pin to vin or leave it unconnected. when an analog voltage is applied to the seq pin, the output voltage tracks this voltage until the output reaches the set - point voltage. the final value of the seq voltage must be set higher than the set - point voltage of the module. the output voltage follows the voltage on the seq pin on a one - to - one basis. by connecting multiple modules together, multiple modules can track their output voltages to the voltage applied on t he seq pin. 0.6v open 1v 3k 1.2v 2k 1.5v 1.333k 1.8v 1k 2.5v 0.632k 3.3v 0.444k vo on/off vin gnd trim q2 q1 rmargin-up rmargin-down rtrim
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 10 feature descriptions (con.) for proper voltage sequencing, first, input voltage is applied to th e module. the on/off pin of the module is left unconnected (or tied to gnd for negative logic modules or tied to vin for positive logic modules) so that the module is on by default. after applying input voltage to the module, a minimum 10msec delay is requ ired before applying voltage on the seq pin. this delay gives the module enough time to complete its internal power - up soft - start cycle. during the delay time, the seq pin should be held close to ground (nominally 50mv 20 mv). this is required to keep th e internal op - amp out of saturation thus preventing output overshoot during the start of the sequencing ramp. by selecting resistor r1 (see figure. 34) according to the following equation the voltage at the sequencing pin will be 50 mv when the sequencing signal is at zero. after the 10msec delay, an analog voltage is applied to the seq pin and the output voltage of the module will track this voltage on a one - to - one volt bases until the output reaches the set - point voltage. to initiat e simultaneous shutdown of the modules, the seq pin voltage is lowered in a controlled manner. the output voltage of the modules tracks the voltages below their set - point voltages on a one - to - one basis. a valid input voltage must be maintained until the tracking and output voltages reach ground potential. when using the ez - sequencetm feature to control start - up of th e module, pre - bias immunity during startup is disabled. the pre - bias immunity feature of the module relies on the module being in the diode - mode during start - up. when using the ez - sequencetm feature, modules goes through an internal set - up time of 10msec, and will be in synchronous rectification mode when the voltage at the seq pin is applied. this will result in the module sinking current if a pre - bias voltage is present at the output of the module. figure 3 4 : circuit showing conne ction of the sequencing signal to the seq pin. simultaneous simultaneous tracking (figure 35 ) is implemented by using the track pin. the objective is to minimize the voltage difference between the power supply outputs during power up and down. the simu ltaneous tracking can be accomplished by connecting vo ps1 to the track pin of ps2. please note the voltage apply to track pin needs to always higher than the vo ps2 set point voltage. figure 35 monotonic start - up and shutdown the dcm 12a modules have monotonic start - up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. ? ? ? ? ? ? ? ? ? 05 . 0 24950 1 vin r track vo ps 1 ps 2 vo ps 2 ps 1 vin vin on / off on / off
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 11 thermal consideratio ns 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 deltas 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. 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. figure 3 6 : wind tunne l test setup thermal curves figure 37 : temperature measurement location the allowed maximum hot spot temperature is defined at 10 7 figure 38 : output current vs. ambient temperature and air velocity@vin=5v, vout=3.3v(either orientation) figure 39 : output current vs. ambient temperature and air velocity@ vin=3.3v, vout= 2.5 v (either orientation) 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) dcm04s0a0s12 output current vs. ambient temperature and air velocity @vin = 5.0v, vo=3.3v (airflow from pin8 to pin10) 0 3 6 9 12 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( ) output current(a) natural convection dcm04s0a0s12 output current vs. ambient temperature and air velocity @vin = 3.3v, vo=2.5v (airflow from pin8 to pin10) 0 3 6 9 12 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( ) output current(a) natural convection 100lfm
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 12 thermal curves figure 4 0 : output current vs. ambient temperature and air velocity@vin=3.3v, vout=1.8v(either orientation) figure 41 : output current vs. ambient temperature and air velocity@vin=3.3v, vout=1.2v(either orientation) figure 4 2 : output current vs. ambient temper ature an d air velocity@vin=3.3v, vout= 0.6 v(either orientation) dcm04s0a0s12 output current vs. ambient temperature and air velocity @vin = 3.3v, vo=1.8v (airflow from pin8 to pin10) 0 3 6 9 12 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( ) output current(a) natural convection dcm04s0a0s12 output current vs. ambient temperature and air velocity @vin = 3.3v, vo=1.2v (airflow from pin8 to pin10) 0 3 6 9 12 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( ) output current(a) natural convection dcm04s0a0s12 output current vs. ambient temperature and air velocity @vin = 3.3v, vo=0.6v (airflow from pin8 to pin10) 0 3 6 9 12 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( ) output current(a) natural convection
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 13 pick and place locat ion recommended pad layo ut surface - mount tape & reel
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 14 lead (sn/pb) pro cess recommend temp. profile note: the temperature refers to the pin of dc m , measured on the pin vout joint . lead free (sac) proc ess recommend temp. profile note: the temperature refers to the pin of dc m , measured on the pin vout joint. 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_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 15 mechanical dr awing
ds_ dc m 04s0a0s 12p fa _ 10022013 e - mail : dcdc @ d elta.com.tw http:// www. deltaww.com/dcdc p 16 part numbering system d c s 04 s 0a0 s 12 p f a product series input voltage numbers of outputs output voltage package type output current on/off logic option code d c s - 3 , 6a d c m - 1 2 a d c l - 20 a 04 - 2. 4 ~5.5v 1 2 C 4.5 ~14v s - single 0a0 - programmable s - smd 03. - 3a 06 - 6a 1 2 - 1 2 a 20 - 20 a n - negative p - positive f - rohs 6/6 (lead free) a - standard fun c tion model list model name packaging input voltage output voltage output current efficiency 5.0vin, 3.3vdc @ 6a d c s04s0a0s 12p f a smd 2. 4 ~ 5.5vdc 0. 6 v~ 3.3vdc 12a 95.0% contact: 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: telephone: +31 - 20 - 655 - 0967 fax: +31 - 20 - 655 - 0999 email: dcdc@delta - es. com asia & the rest of world: telephone: +886 3 4526107 x6220 ~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 any patent or p atent rights of delta. delta reserves the right to revise these specifications at any time, without notice .

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