wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w s s eries eries http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 3 order code input output efficiency (%,typ) voltage (vdc) voltage (vdc) current (ma) nominal range max. * max . min . wra0505ymt-3w 5 4.5-9 11 5 300 30 72 wra0512ymt-3w 5 4.5-9 11 12 125 13 74 wra0515ymt-3w 5 4.5-9 11 15 100 10 75 wrb0505ymt-3w 5 4.5-9 11 5 600 60 72 wrb0512ymt-3w 5 4.5-9 11 12 250 25 74 wrb0515ymt-3w 5 4.5-9 11 15 200 20 75 wra1205ymt-3w 12 9-18 22 5 300 30 76 wra1212ymt-3w 12 9-18 22 12 125 13 79 wra1215ymt-3w 12 9-18 22 15 100 10 79 wrb1205ymt-3w 12 9-18 22 5 600 60 74 wrb1212ymt-3w 12 9-18 22 12 250 25 79 wrb1215ymt-3w 12 9-18 22 15 200 20 79 wra2405ymt-3w 24 18-36 40 5 300 30 76 wra2412ymt-3w 24 18-36 40 12 125 13 79 wra2415ymt-3w 24 18-36 40 15 100 10 79 wrb2405ymt-3w 24 18-36 40 5 600 60 76 wrb2412ymt-3w 24 18-36 40 12 250 25 79 wrb2415ymt-3w 24 18-36 40 15 200 20 79 wra4805ymt-3w 48 36-72 80 5 300 30 76 wra4812ymt-3w 48 36-72 80 12 125 13 79 WRA4815YMT-3W 48 36-72 80 15 100 10 79 wrb4805ymt-3w 48 36-72 80 5 600 60 76 wrb4812ymt-3w 48 36-72 80 12 250 25 79 wrb4815ymt-3w 48 36-72 80 15 200 20 79 *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 wrb wrb wrb wrb wrb wrb wrb wrb 24 24 24 24 24 24 24 24 12 12 12 12 12 12 12 12 y y y y y y y y mt mt mt mt mt mt mt mt - - - - - - - - 3 3 3 3 3 3 3 3 w w w w w w w w product series input voltage output voltage wide ( 2 :1) input range mini package style rated power 3w, wide input , isola ted & regulated single/dual outputdc/dc converter features features features features features features features features 2:1 wide input voltage range operating temperature: -40 ~ +85 1500vdc isolation no heatsink required internal smd construction mtbf>1,000,000 hours short circuit protection(automatic recovery) industry standard pinout rohs compliance applications applications applications applications applications applications applications applications selection selection selection selection selection selection selection selection guide guide guide guide guide guide guide guide the wra_ymt-3w&wrb_ymt-3w series are specially designed for applications where a wide range input voltage 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. common common common common common common common common specifications specifications specifications specifications specifications specifications specifications specifications parameter test conditions min. typ. max. units storage humidity 95 % operating temperature -40 85 storage temperature -55 125 temp. rise at full load 15 lead temperature 1.5mm from case for 10 seconds 300 short circuit protection continuous, automatic recovery cooling free air convection package material epoxy resin (ul94-v0) mtbf 1000 k hours weight 5.2 g microdc microdc microdc microdc reserves reserves reserves reserves the the the the copyright copyright copyright copyright
wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w s s eries eries http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 3 isolation isolation isolation isolation isolation isolation isolation isolation specifications specifications specifications specifications specifications specifications specifications specifications parameter test conditions min. typ. max units isolation voltage tested for 1 minute and 1ma max 1500 vdc isolation resistance test at 500vdc 1000 m ? isolation capacitance input/output, 100khz/1v 1000 pf application application application application application application application application note note note note note note note note requirement requirement requirement requirement on on on on output output output output load load load load in order to ensure the product operate efficiently and reliably, in addition to a max load (namely full load), a minimum load is specified for this kind of dc/dc converter. make sure the specified range of input voltage is not exceeded, the minimum output load no less than 10% load. if the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly. if the actual output power is very small, please add an appropriate resistor as extra loading, or contact our company for other lower output power products. recommended recommended recommended recommended circuit circuit circuit circuit all the wra_ymt-3w & wrb_ymt-3w series have been tested according to the following recommended testing circuit before leaving factory. this series should be tested under load (see figure 1). if you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low esr. 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 100 f 24v&48v 10 f~47 f cout: 10 f/100ma input input input input current current current current when it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the rippled voltage do not exceed the module standard. input current of power supply should afford the flash startup current of this kind of dc/dc module (figure 2), general: ip 1.6*iin-max(vin=5v) ip 1.4*iin-max(vin=12v/24v/48v) 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 charecteristics charecteristics charecteristics charecteristics charecteristics charecteristics charecteristics charecteristics recommended recommended recommended recommended recommended recommended recommended recommended circuit circuit circuit circuit circuit circuit circuit circuit output output output output output output output output specifications specifications specifications specifications specifications specifications specifications specifications parameter test conditions min. typ. max units output power see above products program 0.3 3 w positive voltage accuracy refer to recommended circuit 1 3 % negative voltage accuracy refer to recommended circuit 3 5 % load regulation from 10% to 100% load 0.5 1 * % line regulation input voltage from low to high 0.2 0.5 % temperature drift (vout) refer to recommended circuit 0.03 % / output ripple& noise** 20mhz bandwidth 35 100 mvp-p switching frequency 100% load, nominal input voltage 300 khz * dual output models unbalanced load: 5 %. **test ripple and noise by p arallel cable method. see detailed operation instructions at testing of power converter section, application notes.
wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w wra-ymt-3w&wrb-ymt-3w s s eries eries 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 mechanical mechanical mechanical mechanical mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions recommended recommended recommended recommended recommended recommended recommended recommended footprint(top footprint(top footprint(top footprint(top footprint(top footprint(top footprint(top footprint(top view) view) view) view) view) view) view) view) microdc professional power module,inc. tel:0086-20-86000646 e-mail:tech@microdc.cn website:http://www.microdc.cn microdc professional power module,inc.makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. specifications are subject to change without notice. ? 2010 microdc professional power module, inc. guangzhou 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. 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: 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. capacitor max load tested at input voltage range and full load. 4. all specifications measured at ta=25 , humidity<75%, nominal input voltage and rated output load unless otherwise specified. 5. only typical models listed, other models may be different, please contact our technical person for more details. 6. in this datasheet, all the test methods of indications are based on corporate standards.
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