wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 4 order order order order code code code code nominal nominal nominal nominal input input input input voltage voltage voltage voltage rated rated rated rated output output output output voltage voltage voltage voltage output output output output current current current current 1 1 1 1 input input input input current current current current full full full full load load load load ef ef ef ef f f f f cienc cienc cienc cienc 2 2 2 2 (min.) (min.) (min.) (min.) isolation isolation isolation isolation capacitance capacitance capacitance capacitance mttf mttf mttf mttf 3 3 3 3 min.load full load v (nom.) v ma ma ma % pf khrs wrb0505ydk-3w 5 5 100-150 400-600 615 66 40 1939 wrb0509ydk-3w 5 9 55-83 222-333 563 72 52 1926 wrb0512ydk-3w 5 12 42-62 166-250 548 71 43 1907 wrb0515ydk-3w 5 15 33-50 133-200 533 73 44 1924 wrb1205ydk-3w 12 5 150 600 362 71 36 1928 wrb1209ydk-3w 12 9 83 333 320 78 52 1916 wrb1212ydk-3w 12 12 62 250 316 78 44 1897 wrb1215ydk-3w 12 15 50 200 308 79 47 1914 wrb2403ydk-3w 24 3.3 227 909 178 70 30 1671 wrb2405ydk-3w 24 5 150 600 174 70 36 1673 wrb2409ydk-3w 24 9 83 333 156 78 52 1663 WRB2412YDK-3W 24 12 62 250 154 80 44 1644 wrb2415ydk-3w 24 15 50 200 150 82 54 1657 wrb4803ydk-3w 48 3.3 227 909 87 71 30 1676 wrb4805ydk-3w 48 5 150 600 87 73 35 1668 wrb4809ydk-3w 48 9 83 333 78 80 52 1663 wrb4812ydk-3w 48 12 62 250 77 81 44 1648 wrb4815ydk-3w 48 15 50 200 76 81 53 1661 ge can t exceed this value,or will cause the permanent damage. 3w 3w 3w 3w , , , , wide wide wide wide input input input input , , , , isolated®ulated isolated®ulated isolated®ulated isolated®ulated single single single single output output output output dc/dc dc/dc dc/dc dc/dc converters converters converters converters features features features features features features features features rohs compliant industry standard footprint ef fcienc y to 82% power density 0.90w/cm 3 2:1 wide input range single isolated output short circuit protection low pro fi le 24 pin case ul 94v-0 package material operating temperature range -40 to 85 no heatsink required footprint 4.73cm 5v, 12v, 24v & 48v input 3.3v, 5v, 9v, 12v & 15v output internal smd construction fully encapsulated applications applications applications applications applications applications applications applications microdc reserves the copyright models models models models models models models models model model model model model model model model selection selection selection selection selection selection selection selection wrb wrb wrb wrb wrb wrb wrb wrb 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 y y y y y y y y d d d d d d d d k k k k - - - - - - - - 3 3 3 3 3 3 3 3 w w w w w w w w product series input voltage output voltage 2:1 wide input range dip 24k package style rated power the wrb-ydk-3w series is a range of low profile dc/dc converters offering a single regulated output over a 2:1 input voltage range. all parts deliver 3w output power up to 85 without heatsinking, except the 4.5v to 9v input voltage range which should be derated to 2w at the lower input voltage. a flyback oscillator design with isolated feedback is used to give regulation over the full operating range of 25% to 100% of full load. it is strongly recommended that external capacitors be used on input and output to guarantee performance over full load and input voltage range. input input input input input input input input characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics parameter conditions min. typ. max. units voltage range al l wrb05xx 4.5 5 9 vdc al l wrb12xx 9 12 18 vdc al l wrb24xx 18 24 36 vdc al l wrb48xx 36 48 72 vdc re fl ected ripple current 2 wrb2403 180 360 ma p-p wrb4803 140 290 ma p-p all wrb05xx 400 500 ma p-p all wrb12xx 150 170 ma p-p all other wrb24xx 290 360 ma p-p all other wrb48xx 100 127 ma p-p absolute absolute absolute absolute absolute absolute absolute absolute maximum maximum maximum maximum maximum maximum maximum maximum ratings ratings ratings ratings ratings ratings ratings ratings short-circuit protection continuous lead temperature 1.5mm from case for 10 seconds 300 c minimum load 25% of rated load input voltage 05 types 10v input voltage 12 types 20v input voltage 24 types 40v input voltage 48 types 80v internal dissipation 1.7w 1. refer to power derating graph. 2. measured at full load with external input/output capacitors, refer to fi lter circuit 1. 3. calculated using mil-hdbk-217f with nominal input voltage at full load (ground benign) at 25 c . all specifications typical at ta=25 c , nominal input voltage and rated output current unless otherwise specified
wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 4 output output output output output output output output characteristic characteristic characteristic characteristic characteristic characteristic characteristic characteristic parameter parameter parameter parameter conditions conditions conditions conditions min. min. min. min. typ. typ. typ. typ. max. max. max. max. units units units units voltage set point accuracy with external input/output capacitors 1 5 % line regulation low line to high line, 3.3v output with external input/output capacitors 0.05 0.25 % low line to high line, all other outputs with external input/output capacitors 0.05 0.5 % load regulation 25% load to 100% load, 3.3v output with external input/output capacitors 0.6 1.0 % 25% load to 100% load, all other outputs with external input/output capacitors 0.2 0.5 % ripple 1 bw = 20hz to 300khz, 3.3v output with external input/output capacitors 80 120 mv rms bw = 20hz to 300khz, all other outputs with external input/output capacitors 5 10 mv rms noise bw = dc to 100mhz, 3.3v output with external input/output capacitors 180 mv p-p bw = dc to 20mhz, all other outputs with external input/output capacitors 50 100 mv p-p technical technical technical technical technical technical technical technical notes notes notes notes notes notes notes notes isolation isolation isolation isolation voltage voltage voltage voltage hi pot test , flash tested , withstand voltage , proof voltage , dielectric withstand voltage & isolation tes t voltage " are all terms that relate to the same thing, a test voltage, applied for a speci fi ed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. microdc professional power module wrb-ydk-3w 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 wrb-ydk-3w 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-accessible circuitry according to safety standard requirements. repeated repeated repeated repeated high-voltage high-voltage high-voltage high-voltage isolation isolation isolation isolation testing testing testing testing it is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. the wrb-ydk-3w series has an ei ferrite core, 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 rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. 1. for lower ripple refer to circuit for reduced ripple. general general general general general general general general 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 switching frequency 100% load vin nominal 3.3v output 160 220 khz 25% load vin nominal 3.3v output 290 560 khz 100% load vin nominal, all other outputs 80 220 khz 25% load vin nominal, all other outputs 290 560 khz 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 operation ambient temperature -40 85 storage -50 130 cooling free air convection isolation isolation isolation isolation isolation isolation isolation isolation 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 isolation test voltage flash tested for 1 second 100 vdc resistance viso=500vdc 1 g ?
wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 4 application application application application application application application application notes notes notes notes notes notes notes notes recommended input & output capacitors although these converters will work without external capacitors, they are necessary in order to guarantee the full parametric performance over the full line and load range. all parts have been tested and characterized using the following values and test circuit. input voltage c in output voltage c out l out 5v, 12v 100 f,25v(0.25 ? at 100khz) 3.3v 100 f, 25v (0.25 ? at 100khz) mps# - 24100c 24v, 48v 10 f,100v(1.5 ? at 100khz) 5v, 12v, 15v not required test circuit, 5v, 12v and 15v output recommended circuit for reduced ripple 3.3v output output load the minimum rated load across the whole input voltage range is 25% of the full load output. it is important to take care that the load does not fall below this as the output ripple will greatly increase. while this condition will not harm the device the resultant increase in output ripple could cause customers application to malfunction. ndy05 ndy05 ndy05 ndy05 ndy05 ndy05 ndy05 ndy05 power power power power power power power power derating derating derating derating derating derating derating derating curve curve curve curve curve curve curve curve input voltage (v)
wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w wrb-ydk-3w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 4 of 4 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. package package package package package package package package specifications specifications specifications specifications specifications specifications specifications specifications mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions pin pin pin pin connections connections connections connections (top (top (top (top view) view) view) view) all dimensions in inches 0.01 (mm 0.25mm). all pins on a 0.1 (2.54) pitch and within 0.01 (0.25) of true positi on. recommended recommended recommended recommended footprint footprint footprint footprint details details details details unless otherwise stated all dimensions in inches 0.01 (mm 0.5mm ). tube tube tube tube outline outline outline outline dimensions dimensions dimensions dimensions unless otherwise stated all dimensions in inches 0.01 (mm) 0.5m m. tube length : 20.47 0.079 (520mm 2mm). tube quantity : 15
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