2a 2a -x -x (s)d (s)d series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 4 selection selection guide guide order code input output efficiency isolation capacitance mttf 1 voltage(vdc) current (ma) voltage (vdc) current (ma) (%.typ.) nominal max pf khrs 2a 0505 x s 5 500 5 2 00 80 24 1574 2a 0509 x s 5 494 9 111 81 28 663 2a 0512 x s 5 488 12 83 82 30 338 2a 0515 x s 5 476 15 67 84 33 187 2a 051 8x s 5 465 1 8 55 80 36 155 2a 1205 x s 12 208 5 2 00 80 35 490 2a 1209 x s 12 201 9 111 83 55 343 2a 1212 x s 12 198 12 83 84 63 229 2a 1215 x s 12 198 15 67 84 66 148 2a 12 1 8x s 12 190 1 8 55 82 60 138 2a 1505 x s 15 103 5 2 00 81 41 318 2a 1512 x s 15 98 12 111 85 75 249 2a 24 05x s 24 107 5 2 00 82 55 490 2a 2412 x s 24 97 12 83 86 95 183 2a 2415 x s 24 97 15 67 86 104 127 2a 24 1 8x s 24 95 1 8 55 85 108 120 2a 4805 x s 48 51 5 200 82 45 235 2a 4809 x s 48 51 9 111 82 74 195 2a 4812 x s 48 49 12 83 85 90 152 2a 4815 x s 48 49 15 67 85 112 112 2a 0505 x d 5 500 5 2 00 80 24 1574 2a 0509 x d 5 494 9 111 81 28 663 2a 0512 x d 5 488 12 83 82 30 338 2a 0515 x d 5 476 15 67 84 33 187 2a 1205 x d 12 208 5 2 00 80 35 490 2a 1209 x d 12 201 9 111 83 55 343 2a 1212 x d 12 198 12 83 84 63 229 2a 1215 x d 12 198 15 67 84 66 148 2a 1505 x d 15 103 5 2 00 81 41 318 2a 1512 x d 15 98 12 111 85 75 249 2a 24 05x d 24 107 5 2 00 80 40 157 2a 2412 x d 24 97 12 83 86 95 183 2a 2415 x d 24 97 15 67 86 104 127 2a 4805 x d 48 51 5 200 82 45 235 2a 4809 x d 48 51 9 111 82 74 195 2a 4812 x d 48 49 12 83 85 90 152 2a 4815 x d 48 49 15 67 85 112 112 1. calculated using mil-hdbk-217f with nominal input voltage at full load. all speci ? cations typical at ta=25 c, nominal input voltage and rated output current unless otherwise speci ? ed. model model selection selection 2 2 a a 05 05 05 05 x x s s product series input voltage output voltage fixed input s ip package microdc r eserves the copyright isolated 2 w dual output dc/dc converters features features footprint from 1.46cm 2 i/o isolation voltage 1 000vdc operating temperature: -40 85 high efficiency up to 86% fully encapsulated toroidal magnetics internal smd construction power density up to 1.44 w/cm 3 no electrolytic or tantalum capacitors 5v,9v,12v and 15v output no heatsink required dual output from a single input rail ul 94v-0 package material no external components required industry standard pinout power sharing on output mttf up to 1.5 million hours applications applications the 2 a -x( s )d series of industrial temperature range dc/dc converters are the standard building blocks for on-board distributed power systems.they are ideally suited for providing dual rail supplies on primarily digital boards with the added benefit of galvanic isolation to reduce switching noise.all of the rated power may be drawn from a single pin provided the total load does not exceed 2 watt. pin compatibility with the a -x( s )d - 1 w series ensures minimal effort in upgrading distributed power systems. absolute absolute maximum maximum ratings ratings parameter conditions lead temperature 1.5mm from case for 10 second s 300 internal power dissipation 300mw input voltage v , a0 5 types 7v input voltage v in , a 12 types 15v input voltage v in , a1 5 types 18v input voltage v in , a 24 types 28v input voltage v in , a 48 types 54v
2a 2a -x -x (s)d (s)d series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 4 output output specifications specifications parameter conditions min. typ. max. units rated power ta= - 40 c to 85 c 2.0 w voltage set point accuracy a0505 x d/a0505 x s -5 7.5 % all other types -5 5 % line regulation high vin to low vin 1.0 1.2 %% line regulation (a24 a48) high vin to low vin 1.2 %% load regulation 10% load to rated load, 5v output type s 5 10 % 10% load to rated load, 9 v output type s 3 10 % 10% load to rated load, 12 v output type s 3 10 % 10% load to rated load, 1 5v output type s 3 10 % ripple noise bw=dc to 20mhz, 5v output type s 150 200 mv p-p bw=dc to 20mhz, 9v output type s 100 150 mv p-p bw=dc to 20mhz, 12v output type s 80 150 mv p-p bw=dc to 20mhz, 15v output type s 70 150 mv p-p temperature temperature characteristics characteristics conditions parameter conditions min. typ. max. units specification all output types -40 85 storage -50 130 case temperature rise above ambient 5v output types 30 12v output types 25 cooling free air convection input input characteristics characteristics parameter conditions min. typ. max. units voltage range continuous operation, 5 v input types 4.5 5 5.5 vdc continuous operation, 12 v input types 10.8 12 13.2 vdc continuous operation, 1 5 v input types 13.5 15 16.5 vdc continuous operation, 24 v input 21.6 24 26.4 vdc continuous operation, 48 v input 43.2 48 52.8 vdc reflected ripple current 5v input types 50 ma p-p 12v input types 70 ma p-p 24v input types 130 ma p-p 48v input types 200 ma p-p general general characteristics characteristics parameter conditions min. typ. max. units switching frequency 5v input types 95 khz 12v input types 90 khz 15v input types 85 khz switching frequency(a24 a48) 24v 48v input types 80 khz isolation isolation characteristics characteristics parameter conditions min. typ. max. units isolation voltag e flash tested for 1 secon d 1000 vdc resistanc e viso= 5 00vd c 1 10 g ?
2a 2a -x -x (s)d (s)d series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 4 technical technical notes notes isolation voltage "hi pot test","flash tested","withstand voltage","dielectric withstand voltage"& isolation test voltage" are all terms that relate to the same thing, a test voltage. applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. professional power module a series of dc/dc converters are all 100% production tested at their stated isolation voltage. this is 1kvdc for 1 second. a question commonly asked is,"what is the continuous voltage that can be applied across the part in normal operation?" for a part holding no specific agency approvals, such as the a series ,both input and output should normally be maintained within selv limits i.e. less than 42.4v peak, or 60vdc.the isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. the part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier, but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-acssible circuitry according to safety standard requirements. repeated high-voltage isolation testing it is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greatre degree depending on materials. construction and environment. the a series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. while parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. we therefore strongly advise against repeated high voltage isolation testing. but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage. this consideration equally applies to agency recognized parts for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. temperature temperature derating derating graph graph tolerance tolerance envelope envelope technical technical notes notes output ripple reduction by using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mv p-p max. component selection capacitor: ceramic chip capacitors are recommended. it is required that the esr(equivalent series resistance)should be as low as possible.x7r types are recommended. the voltage rating should be at least twice(except for 15v output),the rated output voltage of the dc/dc converter. inductor: the rated current of the inductor should not be less than of the output of the dc/dc converter. at the rated current, the dc resistance of the inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the dc/dc converter. the srf(self resonant frequency) should be >20mhz.
2a 2a -x -x (s)d (s)d series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 4 of 4 outline outline dimensions dimensions footprint footprint details details recommended recommended footprint footprint details details 14 14 pin pin dip dip package package 7 7 pin pin sip sip package package tube tube outline outline dimensions dimensions 14 14 pin pin dip dip tube tube 7 7 pin pin sip sip tube tube unless otherwise stated all dimensions in inches (mm) 0.5mm. tube length (14 pin dip) : 20.47 (520mm 2mm). tube length (7 pin sip) : 20.47 (520mm 2mm). tube quantity :25 mechanical mechanical dimensions dimensions dip dip package package sip sip package package all all dimensions dimensions in in inches inches 0.01(mm 0.01(mm 0.25mm).all 0.25mm).all pins pins on on a a 0.1(2.54) 0.1(2.54) pitch pitch and and within within 0.01(0.25)of 0.01(0.25)of true true position. position. weight: 2.4g (dip) 2.1g (sip) footprint footprint details details -14 -14 pin pin dip dip -7 -7 pin pin sip sip p p in in function function p p in in f f unction unction 1 1 -v in 1 1 +v in 7 7 nc 2 2 -v in 8 8 0v 4 4 -v out 9 9 +v out 5 5 0v 11 11 -v out 6 6 +v out 14 14 +v in n c - not available for electrical connection. specifcations can be changed any time without notice. no parallel connection or plug and play. note: 1. the load shouldn't be less than 10%, otherwise ripple will increase dramatically. 2. operation under 10% load will not damage the converter; however, they may not meet all specification listed. 3. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. in this datasheet, all the test methods of indications are based on corporate standards.
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