wra wra wra wra wra wra wra wra - - - - - - - - ys- ys- ys- ys- ys- ys- ys- ys- 1 1 1 1 1 1 1 1 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - ys ys ys ys ys ys ys ys - - - - - - - - 1 1 1 1 1 1 1 1 w w w w w w w w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 3 selection selection selection selection selection selection selection selection guide guide guide guide guide guide guide guide order code input output efficiency (%,typ) voltage(vdc) current(ma) voltage (vdc) nominal range max* max min wra0505 y s-1w 5 4.5-9.0 11 100 10 5 72 wra0512 y s-1w 5 4.5-9.0 11 42 4 12 76 wra0515 y s-1w 5 4.5-9.0 11 33 3 15 75 wrb0505 y s-1w 5 4.5-9.0 11 200 20 5 72 wrb0509 y s-1w 5 4.5-9.0 11 111 11 9 74 wrb0512 y s-1w 5 4.5-9.0 11 83 8 12 76 wrb0515 y s-1w 5 4.5-9.0 11 67 7 15 75 wra1205 y s-1w 12 9.0-18.0 22 100 10 5 76 wra1212 y s-1w 12 9.0-18.0 22 42 4 12 80 wra1215 y s-1w 12 9.0-18.0 22 33 3 15 80 wrb1205 y s-1w 12 9.0-18.0 22 200 20 5 76 wrb1209 y s-1w 12 9.0-18.0 22 111 11 9 78 wrb1212 y s-1w 12 9.0-18.0 22 83 8 12 80 wrb1215 y s-1w 12 9.0-18.0 22 67 7 15 80 wra2405 y s-1w 24 18.0-36.0 40 100 10 5 78 wra2412 y s-1w 24 18.0-36.0 40 42 4 12 81 wra2415 y s-1w 24 18.0-36.0 40 33 3 15 81 wrb2405 y s-1w 24 18.0-36.0 40 200 20 5 76 wrb2409 y s-1w 24 18.0-36.0 40 111 11 9 78 wrb2412 y s-1w 24 18.0-36.0 40 83 8 12 81 wrb2415 y s-1w 24 18.0-36.0 40 67 7 15 81 wra4805 y s-1w 48 36.0-72.0 80 100 10 5 76 wra4812 y s-1w 48 36.0-72.0 80 42 4 12 80 wra4815 y s-1w 48 36.0-72.0 80 33 3 15 80 wrb4805 y s-1w 48 36.0-72.0 80 200 20 5 76 wrb4809 y s-1w 48 36.0-72.0 80 111 11 9 78 wrb4812 y s-1w 48 36.0-72.0 80 83 8 12 80 wrb4815 y s-1w 48 36.0-72.0 80 67 7 15 80 *input voltage can't exceed this value,or will cause the permanent damage. model model model model model model model model selection selection selection selection selection selection selection selection wr wr wr wr wr wr wr wr a a a a a a a a 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 y y y y y y y y s s s s s s s s - - - - - - - - 1 1 1 1 1 1 1 1 w w w w w w w w product series input voltage output voltage wide ( 2 :1) input range sip package style rated power wide wide wide wide input,isolated input,isolated input,isolated input,isolated & & & & regulated regulated regulated regulated dual/single dual/single dual/single dual/single output output output output sip sip sip sip dc/dc dc/dc dc/dc dc/dc converter converter converter converter features features features features features features features features rohs compliant efficiency up to 86% sip package wide temperature performance at full 1 watt load,-40 c to 85 c ul 94v-0 package material no heatsink required low ripple and good emc features industry standard pinout power sharing on output i/o isolation 1500vdc short circuit protection( automatic recovery ) internal smd construction external on/off control 2:1 wide input voltage range description description description description description description description description the wra_ y s-1w & wrb_ y s-1w series are specially designed for applications where a group of polar power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. these products apply to: 1) where the voltage of the input power supply is wide range (voltage range 2:1); 2) where isolation is necessary between input and output (isolation voltage 1500vdc); 3) where the regulation of the output voltage and the output ripple noise are demanded. microdc reserves the copyright output output output output output output output output specifications specifications specifications specifications specifications specifications specifications specifications parameter parameter parameter parameter test test test test conditions conditions conditions conditions min. min. min. min. typ. typ. typ. typ. max. max. max. max. units units units units output power refer to product program 0.1 1 w line regulation input voltage from low to high 0.2 0.5 % load regulation 10% to 100% full load(wrb_cks-1w) 0.5 0.75 % 10% to 100% full load(wra_cks-1w)* 0.5 1.0 % output voltage accuracy refer to recommended circuit 1 3.0 % temperature drift(vout) refer to recommended circuit 0.03 %/ c output ripple** 20mhz bandwidth 25 75 mv p-p output noise** 20mhz bandwidth 25 75 mv p-p switching frequency 100% full load,input voltage range 300 khz * dual output models unbalanced load (25/100%): 5%max * *test ripple and noise by "parallel cable" method. see detailed operation instructions at testing of power converter section, application notes.
wra wra wra wra wra wra wra wra - - - - - - - - ys- ys- ys- ys- ys- ys- ys- ys- 1 1 1 1 1 1 1 1 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - ys ys ys ys ys ys ys ys - - - - - - - - 1 1 1 1 1 1 1 1 w w w w w w w w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 3 temperature temperature temperature temperature temperature temperature temperature temperature characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics parameter parameter parameter parameter conditions conditions conditions conditions min. min. min. min. typ. typ. typ. typ. max. max. max. max. units units units units storage humidity range 95 % no-load power consumption 120 c operating temperature -40 85 c storage temperature -55 125 c lead temperature 1.5mm from case for 10 seconds 30 0 c temp.rise at full load 15 35 c cooling free air convection case material plastic(ul94-v0) short circuit protection * continuous,automatic recovery 1 s mtbf 10 00 k hours weight 5 g *supply voltage must be discontinued at the end of short circuit duration. isolation isolation isolation isolation isolation isolation isolation isolation specifications specifications specifications specifications specifications specifications specifications specifications parameter parameter parameter parameter test test test test conditions conditions conditions conditions min. min. min. min. typ. typ. typ. typ. max. max. max. max. units units units units isolation test voltage flash tested for 1 minute and 1ma max 1500 vdc isolation resistance test at viso=500vdc 1000 m isolation capacitance 100khz,1v 35 pf application application application application application application application application note note note note note note note note size size size size graph graph graph graph 1) 1) 1) 1) recommended recommended recommended recommended circuit circuit circuit circuit if you want to further decrease the input/output ripple, an lc filtering network may be connected to the input and output ends of the dc/dc converter, see (figure 1). lin however, the capacitance of the output filter capacitor must be proper. if the capacitance is too big, a startup problem might arise. for every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees (table 1). general: cin: 5v,12v 100pf 24v,48v 10uf cout: 47pf(typ.) lin: 4.7ph ~120ph lout:2.2ph ~10ph cs: 10uf ~ 22uf 2) 2) 2) 2) ctrl ctrl ctrl ctrl terminal terminal terminal terminal when open or high impedance,the converter work well; when this pin is high ; the converter shutdown; it should be note that the input current (ic) should between 5-10ma, exceeding the maximum 20ma will cause permanence damage to the converter. the value of r can be derived as follows : 3) 3) 3) 3) input input input input current current current current while using unstable power source, please ensure the output voltage and ripple voltage do not excced indexes of the converter. the preceding power source must be able to provide for converter sufficient starting current ip (figure 2). general: ip 1.4*iin-max 4) 4) 4) 4) no no no no parallel parallel parallel parallel connection connection connection connection or or or or plug plug plug plug and and and and play play play play typical typical typical typical typical typical typical typical characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics temperature temperature temperature temperature derating derating derating derating graph graph graph graph recommended recommended recommended recommended recommended recommended recommended recommended circuit circuit circuit circuit circuit circuit circuit circuit output output output output graph graph graph graph external capacitor table (table 1) single single single single single single single single vout vout vout vout vout vout vout vout cout cout cout cout cout cout cout cout dual dual dual dual dual dual dual dual vout vout vout vout vout vout vout vout cout cout cout cout cout cout cout cout (vdc) (vdc) (vdc) (vdc) ( ( ( ( f) f) f) f) (vdc) (vdc) (vdc) (vdc) ( ( ( ( f) f) f) f) 5 680 5 330 9 560 12 220 12 470 15 150 15 330 _ _
wra wra wra wra wra wra wra wra - - - - - - - - ys- ys- ys- ys- ys- ys- ys- ys- 1 1 1 1 1 1 1 1 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - ys ys ys ys ys ys ys ys - - - - - - - - 1 1 1 1 1 1 1 1 w w w w w w w w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 3 outline outline outline outline outline outline outline outline dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions footprint footprint footprint footprint footprint footprint footprint footprint details details details details details details details details pin pin pin pin single single single single dual dual dual dual 1 gnd gnd 2 vin vin 3 ctrl ctrl 5 nc nc 6 +v0 +v0 7 0v 0v 8 cs -v0 nc:no connection footprint footprint footprint footprint footprint footprint footprint footprint details details details details details details details details 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. 5. only typical models listed, other models may be different, please contact our technical person for more details. when when when when the the the the environment environment environment environment temperature temperature temperature temperature is is is is higher higher higher higher than than than than 71 71 71 71 , , , , the the the the product product product product output output output output power power power power should should should should be be be be less less less less then then then then 60% 60% 60% 60% of of of of the the the the rated rated rated rated power. power. power. power. no no no no parallel parallel parallel parallel connection connection connection connection or or or or plug plug plug plug and and and and play. play. play. play. mechanical mechanical mechanical mechanical mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] recommended recommended recommended recommended recommended recommended recommended recommended footprint footprint footprint footprint footprint footprint footprint footprint recommended footprint top view,grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) tube tube tube tube tube tube tube tube outline outline outline outline outline outline outline outline dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] l=530mm[20.866inch] tube quantity: 22pcs l=220mm[8.661inch] tube quantity: 8pcs when when when when the the the the environment environment environment environment temperature temperature temperature temperature is is is is higher higher higher higher than than than than 71 71 71 71 c, c, c, c, the the the the product product product product output output output output power power power power should should should should be be be be less less less less then then then then 60% 60% 60% 60% of of of of the the the the rated rated rated rated power. power. power. power. no no no no parallel parallel parallel parallel connection connection connection connection or or or or plug plug plug plug and and and and play. play. play. play. use use use use dual dual dual dual output output output output simultaneously, simultaneously, simultaneously, simultaneously, forbid forbid forbid forbid opening opening opening opening output output output output pin(0v) pin(0v) pin(0v) pin(0v) to to to to use use use use as as as as single single single single output. output. output. output. microdc professional power module,inc. tel:0086-20-86000646 e-mail:tech@microdc.cn website:http://www.microdc.cn rohs rohs rohs rohs compliant compliant compliant compliant information information information information this series is compatible with rohs soldering systems with a peak wave solder temperature of 300 c for 10 seconds. the pin termination finish on the sip package type is tin plate, hot dipped over matte tin with nickel preplate. the dip types are matte tin over nickel preplate. both types in this series are backward compatible with sn/pb soldering systems. reach reach reach reach compliant compliant compliant compliant information information information information this series has proven that this product does not contain harmful chemicals, it also has harmful chemical substances through the registration, inspection and approval.
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