WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 6 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 24 24 24 24 24 24 24 24 05 05 05 05 05 05 05 05 y y y y y y y y gd gd gd gd gd gd gd gd - - - - - - - - 2 2 2 2 2 2 2 2 w w w w w w w w (119) (119) (119) (119) (119) (119) (119) (119) product series input voltage output voltage wide ( 2 :1) input range dip16 package style rated power (output current) 2w,wide 2w,wide 2w,wide 2w,wide input input input input range range range range smd, smd, smd, smd, dual/single dual/single dual/single dual/single output output output output dc/dc dc/dc dc/dc dc/dc converter converter converter converter s s s s features features features features features features features features ultra-wide 2 :1 input range d ip- 16 package efficiency up to 81% temperature range C 40 c to +85 c h mtbf 1,000,000 hours low ripple and noise short circuit protection i/o isolation 1500 vdc complies with en55022 class a fully rohs compliant ul 94 v-0 package material internal smd construction description description description description description description description description the WRA-YGD-2W & wrb-ygd-2w series power modules are low-profile dc-dc converters that operate over input voltage of 4.5-9vdc,9-18vdc,18-36vdc and 36-75vdc which provide precisely regulated output voltages of 3.3v,5v,12v,15v, 5v, 12v and 15vdc. the WRA-YGD-2W & wrb-ygd-2w series is an excellent for data communication equipments,mobile battery driven equipments,distributed power systems,telecommunication equipments,mixed analog/machine control equipments,computer peripheral systems and industrial robot systems. the modules have a maximum power rating of 2w and a typical full-load efficiency of 81%,continuous short circuit,30mv output ripple,built-in filtering for both input and output minimize the need for external filtering. absolute absolute absolute absolute absolute absolute absolute absolute maximum maximum maximum maximum maximum maximum maximum maximum ratings ratings ratings ratings ratings ratings ratings ratings parameter parameter parameter parameter min. min. min. min. max. max. max. max. unit. unit. unit. unit. input sure voltage (1000 ms) 5vdc input models -0.7 11 vdc 12vdc input models -0.7 25 vdc 24vdc input models -0.7 50 vdc 48vdc input models -0.7 100 vdc lead temperature(1.5mm from case for 10 sec.) --- 260 internal power dissipation --- 1,800 mw environmental environmental environmental environmental environmental environmental environmental environmental specifications specifications specifications specifications specifications specifications specifications specifications parameter parameter parameter parameter conditions conditions conditions conditions min. min. min. min. max. max. max. max. unit. unit. unit. unit. operating temperature ambient -40 +65 operating temperature case -40 +90 storage temperature -40 +125 humidity --- 95 % cooling free-air convection conducted en55022 class a exceeding the absolute maximum ratings of the unit could cause damage. these are not continuous operating ratings. capacitive capacitive capacitive capacitive capacitive capacitive capacitive capacitive load load load load load load load load models by vout 3.3v 5v 12v 15v 5v * 12v * 15v * unit maximum capacitive load 2200 1000 110 470 100 20 47 uf * for each output input input input input input input input input fuse fuse fuse fuse fuse fuse fuse fuse selection selection selection selection selection selection selection selection guide guide guide guide guide guide guide guide 5v input models 12v input models 24v input models 48v input models 1000ma slow - blow type 500ma slow - blow type 250ma slow - blow type 120ma slow - blow type
WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 6 microdc reserves the copyright selection selection selection selection selection selection selection selection guide guide guide guide guide guide guide guide model number input voltage output voltage output current input current reflected ripple current efficiency vdc vdc max min @max. load @no load @max. load ma ma ma (typ.) ma (typ.) % (max.) % (typ. wrb0503ygd-500 5 ( 4.5 ~ 9 ) 3.3 500 125 471 40 100 70 wrb0505ygd-2w 5 400 100 548 40 100 73 wrb0512ygd-2w 12 167 42 534 40 100 75 wrb0515ygd-2w 15 134 33 582 40 100 73 wra0505ygd-2w 5 200 50 667 40 100 64 wra0512ygd-2w 12 83 21 615 40 100 69 wra0515ygd-2w 15 67 17 598 40 100 71 wrb1203ygd-500 12 ( 9 ~ 18 ) 3.3 500 125 184 20 25 73 wrb1205ygd-2w 5 400 100 217 20 25 77 wrb1212ygd-2w 12 167 42 209 20 25 80 wrb1215ygd-2w 15 134 33 220 20 25 80 wra1205ygd-2w 5 200 50 242 20 25 73 wra1212ygd-2w 12 83 21 224 20 25 78 wra1215ygd-2w 15 67 17 226 20 25 78 wrb2403ygd-500 24 ( 18 ~ 36 ) 3.3 500 125 96 10 15 72 wrb2405ygd-2w 5 400 100 109 10 15 77 wrb2412ygd-2w 12 167 42 109 10 15 80 wrb2415ygd-2w 15 134 33 108 10 15 81 wra2405ygd-2w 5 200 50 119 10 15 74 wra2412ygd-2w 12 83 21 112 10 15 78 wra2415ygd-2w 15 67 17 110 10 15 80 wrb4803ygd-500 48 ( 36 ~ 75 ) 3.3 500 125 49 8 10 71 wrb4805ygd-2w 5 400 100 57 8 10 73 wrb4812ygd-2w 12 167 42 53 8 10 79 wrb4815ygd-2w 15 134 33 55 8 10 79 wra4805ygd-2w 5 200 50 62 8 10 71 wra4812ygd-2w 12 83 21 57 8 10 77 wra4815ygd-2w 15 67 17 57 8 10 77 input input input input input input input input specifications specifications specifications specifications specifications specifications specifications specifications parameter mode min . typ . max . unit. start voltage 5v input models 3.5 4 4.5 vdc 12v input models 4.5 7 9 vdc 24v input models 8 12 18 vdc 48v input models 16 24 36 vdc under voltage shutdown 5v input models --- 3.5 4 vdc 12v input models --- 6.5 8.5 vdc 24v input models --- 11 17 vdc 48v input models --- 22 34 vdc reverse polarity input current all models --- --- 1 a short circuit input powe r all models --- --- 1500 mw input filter all models pi filter output output output output output output output output specifications specifications specifications specifications specifications specifications specifications specifications parameter conditions min . typ . max . unit. output voltage accuracy --- 1.0 2.0 % output voltage balance dual output, balanced loads --- 1.0 2.0 % line regulation vin=min. to max --- 0.3 0.5 % load regulation io=25% to 100% --- 0.5 0.75 % ripple & noise (20mhz) --- 30 50 mv p-p ripple & noise (20mhz) over line, load & temp --- --- 75 mv p-p ripple & noise (20mhz) --- --- 15 mv rms over power protection 120 --- --- % transient recovery time 25% load step change --- 100 300 us transient response deviation 25% load step change --- 3 5 % temperature coefficien --- 0.01 0.02 %/] output short circuit continuous
WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 6 general general general general general general general general specifications specifications specifications specifications specifications specifications specifications specifications parameter conditions min . typ . max . unit. isolation voltage rated 60 seconds 1500 --- --- vdc isolation voltage tes t flash tested for 1 second 1650 --- --- vdc isolation resistance 500vdc 1000 --- --- m ? isolation capacitance 100khz,1v --- 250 420 pf switching frequency --- 300 --- khz mtbf mil-hdbk-217f @ 25 , ground benign 1000 --- --- k hours notes : 1. specifications typical at ta=+25 , resistive load, nominal input voltage, rated output current unless otherwise noted. 2. transient recovery time is measured to within 1%error band for a step change in output load of 75% to 100%. 3. ripple & noise measurement bandwidth is 0-20 mhz. 4. these power converters require a minimum output loading to maintain specified regulation. 5. operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed. 6. all dc/dc converters should be externally fused on the front end for protection. 7. other input and output voltage may be available, please contact factory. 8. specifications subject to change without notice block block block block block block block block diagram diagram diagram diagram diagram diagram diagram diagram single outpu t dual output input input input input input input input input voltage voltage voltage voltage voltage voltage voltage voltage transient transient transient transient transient transient transient transient rating rating rating rating rating rating rating rating
WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 4 of 6 input input input input input input input input voltage voltage voltage voltage voltage voltage voltage voltage transient transient transient transient transient transient transient transient rating rating rating rating rating rating rating rating efficiency vs input voltage ( single output ) efficiency vs input voltage ( dual output ) efficiency vs output load ( single output ) efficiency vs output load ( dual output ) ambient temperature derating derating derating derating curve curve curve curve
WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 5 of 6 test test test test configurations configurations configurations configurations input input input input reflected-ripple reflected-ripple reflected-ripple reflected-ripple current current current current test test test test setup setup setup setup input reflected-ripple current is measured with a inductor lin (4.7uh) and cin (220uf, esr < 1.0[ at 100 khz) to simulated source impedance. capacitor cin, offsets possible battery impedance. current ripple is measured at the input terminals of the module, measurement bandwidth is 0-500khz. peak-to-peak peak-to-peak peak-to-peak peak-to-peak output output output output noise noise noise noise measurement measurement measurement measurement test test test test use a cout 0.47uf ceramic capacitor. 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. design design design design & & & & feature feature feature feature considerations considerations considerations considerations maximum maximum maximum maximum capacitive capacitive capacitive capacitive load load load load the wra(b)-ygd-2w series has limitation of maximum connected capacitance on the output. the power module may operate in current limiting mode during start-up, affecting the ramp-up and the startup time. the maximum capacitance can be found in the data sheet. to provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure current limiting for an unlimited duration. at the point of current-limit inception, the unit shifts from voltage control to current control. the unit operates normally once the output current is brought back into its specified range. input input input input source source source source impedance impedance impedance impedance the power module should be connected to a low ac-impedance input source. highly inductive source impedances can affect the stability of the power module. in applications where power is supplied over long lines and output loading is high, it may be necessary to use a capacitor on the input to insure startup. by using a good quality low equivalent series resistance (esr < 1.0[ at 100 khz) capacitor of a 8.2uf for the 5v input devices, a 3.3uf for the 12v input devices and a 1.5uf for the 24v and 48v devices, capacitor mounted close to the power module helps ensure stability of the unit. output output output output ripple ripple ripple ripple reduction reduction reduction 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 that 3.3uf capacitors are used on output.
WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w WRA-YGD-2W&wrb-ygd-2w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 6 of 6 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. mechanical mechanical mechanical mechanical mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions physical physical physical physical physical physical physical physical characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics tolerance tolerance tolerance tolerance millimeters millimeters millimeters millimeters inches inches inches inches x.x 0.25 x.xx 0.01 x.xx 0.13 x.xxx 0.005 pin pin pin pin 0.05 0.002 case size : case material: weight: flammability: 23.8*13.7*7.62 mm 0.94*0.54*0.30 inches non-conductive black plastic 5.1g ul94v-0 pin pin pin pin pin pin pin pin connections connections connections connections connections connections connections connections pin single output dual output 1 -vin -vin 7 nc nc 8 nc common 9 +vout +vout 10 -vout -vout 16 +vin +vin nc: no connection recommended recommended recommended recommended footprint footprint footprint footprint details details details details all dimensions in inches 0.01 (mm 0.25mm)
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