delphi dbu100 series dc/dc power modules: 5, 12, 24vin, 1w 4-pin sip the delphi dbu100, 5v, 12v, and 24v input, single output, 4-pin sip form factor, isolated dc/dc converter is the latest offering from a world leader in power systems technology and manufacturing D delta electronics, inc. the dbu100 series operate from 5v, 12v, or 24v ( 10%) and provides 5v, 9v, 12v, or 15v of single output in an industrial standard, plastic case encapsulated 4-pin ultra miniature sip package taking up as little as 0.18 square inches of board space. this series provides up to 1w of output power with 1000v isolation and a typical full-load efficiency up to 80%. with creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performance, as well as extremely high reliabilit y under highly stressful operating conditions. applications ? industrial ? transportation ? process/ automation datasheet ds_dbu100_12032008 features ? efficiency up to 80% ? industry standard form factor and pinout ? body size: 5v & 12v: 11.5 x6.1 x10.2mm (0.45? x0.24? x0.40?) 24v: 11.5 x7.1 x10.2mm (0.45? x0.28? x0.40?) ? input: 5v, 12v, 24v ? output: 5, 9, 12, 15v ? 1000v isolation ? ul 94v-0 package material ? iso 9001 and iso14001 certified manufacturing facility options
2 technical specifications t a = 25c, airflow rate = 0 lfm, nominal vin, nominal vout, resistive load unless otherwise noted. parameter notes and conditions dbu100 (standard) min. typ. max. units absolute maximum ratings input voltage transient 5v input model, 1000ms -0.7 9 vdc transient 12v input model, 1000ms -0.7 18 vdc transient 24v input model, 1000ms -0.7 30 internal power dissipation 450 mw operating temperature ambient -40 85 c case -40 100 c storage temperature -40 125 c humidity 95 % lead temperature in assembly 1.5mm from case for 10 seconds 260 c input/output isolation voltage 1000 vdc input characteristics operating input voltage 5v input model 4.5 5 5.5 vdc 12v input model 10.8 12 13.2 vdc 24v input model 21.6 24 26.4 vdc maximum input current pl ease see model list table on page 6 no-load input current 5v model 30 ma 12v model 13 ma 24v model 7 ma reverse polarity input current 0.3 a output characteristics output voltage set point accuracy 1.0 3.0 % output voltage regulation over load io=20% to 100%, please see page 6 over line for vin change of 1% 1.2 1.5 % over temperature tc=-40c to 100c 0.01 0.02 %/c output voltage ripple and noise 5hz to 20mhz bandwidth peak-to-peak full load, 0.33f ceramic 100 150 mv peak-to-peak, over line, load, temperature full load, 0.33f ceramic 200 mv rms full load, 0.33f ceramic 5 mv output short circuit 0.5 second maximum output capacitance single output models 33 f efficiency 100% load please see model list table on page 6 isolation characteristics isolation voltage input to output, 60 seconds 1000 vdc isolation voltage test flash test for 1 seconds 1100 vdc isolation resistance 500vdc 1000 m ? isolation capacitance 100khz, 1v 60 100 pf feature characteristics switching frequency 50 90 110 khz general specifications mtbf mil-hdbk-217f; ta=25c, ground benign 2 m hours weight 5v and 12v models 1.3 grams 24v models 1.7 grams case material non-conductive black plastic flammability ul94v-0 input fuse 5v model, 500ma slow blown type 12v model, 200ma slow blown type 24v model, 100ma slow blown type notes: 1. these power converters require a minimum output load to maintain specified regulation (please see page 6 for the suggested minimum load). operation under no-load condi tions will not damage these modules; however, they may not meet all specifications listed above. 2. these dc/dc converters should be exter nally fused at the front end for protection.
3 electrical charact eristics curves 50 60 70 80 90 100 efficiency (%) input voltage (v) nom low high 20 30 40 50 60 70 80 90 load current (%) efficiency (%) 100 60 40 20 10 80 figure 1: efficiency vs. input voltage (single output) figure 2: efficiency vs. output load (single output) +vo bipolar push-pull inverter +vin -vin -vo figure 3: block diagram of dbu100 single output modules
4 design & feature considerations the dbu100 circuit block diagrams are shown in figure 3. peak-to-peak output noise measurement scope measurement should be made by using a bnc socket, measurement bandwidth is 0-20 mhz. position the load between 50 mm and 75 mm from the dc/dc converter. a cout of 0.33uf ceramic capacitor is placed between the terminals shown below. +out -out +vin -vin single output dc / dc converter resistive load scope copper strip cout input source impedance the power module should be connected to a low ac- impedance input source. highly inductive source impedances can affect t he stability of the power module. + +out -out +vin -vin dc / dc converter load dc power source + - cin in applications where power is supplied over long lines and output loading is high, it may be necessary to use a capacitor at the input to ensure startup. capacitor mounted close to the input of the power module helps ensure stability of the unit, it is recommended to use a good quality low equivalent series resistance (esr < 1.0 ? at 100 khz) capacitor of a 1.5uf for the 5v input devices, a 1.0uf for the 12v input devices, and a 0.47uf for the 24v devices. maximum capacitive load the dau100 series has limitation of maximum connected capacitance at the output. the power module may be operated in current limiting mode during start-up, affecting the ramp-up and the startup time. for optimum performance we recommend 33uf maximum capacitive load for dbu100 series. output ripple reduction a good quality low esr capacitor placed as close as practicable across the load will give the best ripple and noise performance. to reduce output ripple, it is recommended to use 1.0uf capacitors at the output. +out -out +vin -vin load dc power source + - cout single output dc / dc converter soldering and cleaning considerations post solder cleaning is usually the final board assembly process before the board or system undergoes electrical testing. inadequate cleaning and/or drying may lower the reliability of a power module and severely affect the finished circuit board assembly test. adequate cleaning and/or drying is especially important for un-encapsulated and/or open frame type power modules. for assistance on appropriate soldering and cleaning procedures, please contact delta?s technical support team.
5 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 space between the facing pwb and pwb is constantly kept at 25.4mm (1??). figure 4: wind tunnel test setup thermal derating heat can be removed by in creasing airflow over the module. to enhance system reliability, the power module should always be operated below the maximum operating temperature. if t he temperature exceeds the maximum module temperature, reliability of the unit may be affected. thermal curves dbu100series output current vs. ambient temperature and air velocity (either orientation) 0% 20% 40% 60% 80% 100% 120% 25 35 45 55 65 75 85 ambient temperature ( ) output power (%) natural convection figure 5: derating curve
6 model list input output full load efficiency load regulation vdc (v) max (ma) vdc (v) max (ma) min (ma) % % dbu101 290 5 200 4 69 11 dbu102 260 9 110 2 76 8 dbu103 262 12 84 1.5 77 7 dbu104 258 15 67 1 78 6 DBU111 117 5 200 4 71 9 dbu112 107 9 110 2 77 5 dbu113 106 12 84 1.5 79 5 dbu114 105 15 67 1 80 4 dbu121 60 5 200 4 70 8 dbu122 54 9 110 2 76 5 dbu123 53 12 84 1.5 79 4 dbu124 53 15 67 1 79 4 5 (4.5 ~ 5.5) 12 (10.8 ~ 13.2) 24 (21.6 ~ 26.4)
7 mechanical drawing 2.54 [0.10"] 2.1 [0.08"] 11.5 [0.45"] 0.5 [0.02"] 3.2 [0.13"] 10.2 [0.40"] 10.5 [0.41"] 0.25 [0.01"] 1.8 [0.07"] 1 23 4 1 23 4 side view bottom view t 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 6220~6224 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 requ est from delta. information furnished by delta is believed to be accurate and re liable. 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. pin function 1-vin 2+vin 3 -vout 4 +vout case size: (5 & 12v input) 11.5x6.1x10.2mm 0.45x0.24x0.40inches (24v input) 11.5x7.1x10.2mm 0.45x0.28x0.40inches
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