the copyright and authority for the interpretation of the products are reserved by mornsun wra_s-1wr2 & wrb_s-1wr2 2013.07.25-a/3 page 1 of 7 wra_s - 1wr2 & wrb_s-1wr2 series 1w wide input, isolated & regulated dual/single output dc-dc converter patent protected rohs part number system wrb2405s-1wr2 product series input voltage output voltage package rated power features miniature sip package 2:1 wide input voltage range temperature range: -40 c ~ +85 c 1.5kvdc isolation short circuit protection(automatic recovery) remote on/off application the wra_s-1wr2 & wrb_s- 1wr2 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. for these dc-dc converters, you can reduce the failure poi nts of design, and save the manpower, material and time cost in developing micro power supply, and also ensure better quality, stability, safety protection, and reliability for the end products. these products apply to where: 1) input voltage range 2:1; 2) input and output isolation 1.5kvdc; 3) regulated and low ripple noise is required. such as: industrial control, tele-communications etc. selection guide input voltage(vdc) output current (ma) input current (ma)(typ.) model nominal (range) max. output voltage (vdc) max. min. @max. load @no load reflected ripple current (ma, typ.) max. capacitive load ( f) efficiency (%, typ.) @max. load wra0505s-1wr2 5 100 5 274 1000 73 wra0512s-1wr2 12 42 2 263 470 76 wra0515s-1wr2 15 33 2 267 330 75 wrb0505s-1wr2 5 200 10 278 2200 72 wrb0512s-1wr2 12 83 4 263 1000 76 wrb0515s-1wr2 5 (4.5-9) 11 15 67 3 267 25 30 680 75 wra1205s-1wr2 5 100 5 107 1000 78 wra1212s-1wr2 12 42 2 103 470 81 wra1215s-1wr2 15 33 2 104 330 80 wrb1203s-1wr2 3.3 303 15 112 2700 75 wrb1205s-1wr2 5 200 10 108 2200 77 wrb1209s-1wr2 9 111 6 106 1800 79 wrb1212s-1wr2 12 83 4 104 1000 80 wrb1215s-1wr2 12 (9-18) 20 15 67 3 104 12 40 680 80 wra2405s-1wr2 5 100 5 52 1000 80 wra2412s-1wr2 12 42 2 52 470 80 wra2415s-1wr2 15 33 2 52 330 80 wrb2403s-1wr2 3.3 303 15 56 2700 75 wrb2405s-1wr2 5 200 10 54 2200 77 wrb2412s-1wr2 12 83 4 51 1000 81 wrb2415s-1wr2 15 67 3 53 680 79 wrb2424s-1wr2 24 (18-36) 40 24 42 2 54 6 55 470 77 wra4805s-1wr2 5 100 5 27 1000 76 wra4812s-1wr2 12 42 2 26 470 80 wra4815s-1wr2 15 33 2 26 330 80 WRB4803S-1WR2 3.3 303 15 28 2700 75 wrb4805s-1wr2 48 (36-75) 80 5 200 10 27 4 70 2200 76
the copyright and authority for the interpretation of the products are reserved by mornsun wra_s-1wr2 & wrb_s-1wr2 2013.07.25-a/3 page 2 of 7 wrb4812s-1wr2 12 83 4 26 1000 81 wrb4815s-1wr2 15 67 3 26 680 80 note: . absolute maximum rating without damage on the converter, but it isn't recommended. . for dual output converter, the given value is the same for each output. input specifications item test conditions min. typ. max. unit 5v input -0.7 -- 12 12v input -0.7 -- 25 24v input -0.7 -- 50 input surge voltage (1sec. max.) 48v input -0.7 -- 100 5v input 3.5 4 4.5 12v input 4.5 8 9 24v input 11 16 18 start-up voltage 48v input 24 33 36 input filter c filter models on ctrl open or be insulated ctrl* models off connect higher level of voltage to make sure that the input current flow into ctrl is 5 - 10ma. note: *please refer to "design considerations" as the direction for use of ctrl . o utput specifications item test conditions min. typ. max. unit output voltage accuracy 5% to 100% load -- 1 3 no-load output voltage accuracy input voltage range -- 1.5 5 output voltage balance dual output, balanced loads -- 0.3 0.5 line regulation full load, input voltage from low to high -- 0.2 0.5 load regulation 5% to 100% load -- 0.4 0.75 % transient recovery time -- 0.5 2 ms transient response deviation 25% load step change -- 2.5 5 % temperature coefficient 100% load -- 0.02 0.03 %/ c ripple * -- 30 50 noise* 20mhz bandwidth -- 55 75 mvp-p output short circuit protection continuous, automatic recovery note: *ripple and noise are tested with "parallel cable" method. see detailed operation instructions at dc-dc application notes. common specifications item test conditions min. typ. max. unit isolation voltage input-output, tested for 1 minute, leakage current less than 1 ma 1500 -- -- vdc isolation resistance input-output, test at 500vdc 1000 -- -- m isolation capacitance input-output,100khz/0.1v -- 120 -- pf switching frequency(pfm mode) 100% load, nominal input voltage -- 200 -- khz mtbf mil-hdbk-217f@25 1000 -- -- k hours case material plastic ul94-v0 weight -- 4.9 -- g environmental specifications item test conditions min. typ. max. unit storage humidity non condensing -- -- 95 % operating temperature power derating (above85 , see figure 5) -40 -- 85 storage temperature -55 -- 125 case temperature rise ta=25 c -- 25 -- lead temperature 1.5mm from case for 10 seconds -- -- 300 c cooling free air convection emc specifications ce cispr22/en55022 class b (recommended circuit refer to figure1- or figure 3) emi re cispr22/en55022 class b (recommended refer to figure1- or figure 3)
the copyright and authority for the interpretation of the products are reserved by mornsun wra_s-1wr2 & wrb_s-1wr2 2013.07.25-a/3 page 3 of 7 esd iec/en61000-4-2 contact 4kv perf. criteria b rs iec/en61000-4-3 10v/m perf. criteria a iec/en61000-4-4 2kv (recommended circuit refer to figure1- ) perf. criteria b eft iec/en61000-4-4 4kv (recommended circuit refer to figure 3) perf. criteria b surge iec/en61000-4-5 2kv (recommended circuit refer to figure1- or figure 3) perf. criteria b cs iec/en61000-4-6 3 vr.m.s perf. criteria a ems voltage dips, short and interruptions immunity iec/en61000-4-29 0%-70% perf. criteria b emc recommended circuit ldm2 c0 tvs ldm1 mov fuse c1 + vin gnd +vo -vo (0v) eut load c2 cy ctrl cd d1 r ctrl vin gnd (figure1) recommended external circuit parameters: model vin:5v vin:12v vin:24v vin:48v fuse slow blow ,choose according to practical input current mov -- -- s14k35 s14k60 ldm1 -- -- 56 h 56 h tvs smcj13a smcj28a smcj48a smcj90a c0 680 f/16v 680 f/25v 330 f/50v 330 f/100v c1 4.7 f/50v 4.7 f/100v ldm2 12 h c2 4.7 f/50v 4.7 f/100v cy 1nf/2kv d1 rb160m-60/1a r follows: 300 - 0 . 1 - - c d c i v v r = cd 47nf/100v note:1. in figure 1, part is the recommended external circuit for ems , and part is for emi .choose according to requirements. 2. vc is between ctrl and gnd, vd is the forward conduction voltage drop of d1, ic is the current through ctrl pin which is normally 5-10ma, the external circuit of ctrl is as shown in figure1- . 3. if there is no recommended parameters, no external component is required. emc recommended circuit pcb layout dual single (figure 2) note: the pad space between input and output gnd (cy) must be 2mm.
the copyright and authority for the interpretation of the products are reserved by mornsun wra_s-1wr2 & wrb_s-1wr2 2013.07.25-a/3 page 4 of 7 emc module application circuit eut gnd ctrl -vo +vo -vin +vin -vo +vo -vin +vin ft-a/bx1d load -vo (0v) +vo vin cd d1 r ctrl -vin +vin fs-a01d fuse fs-a01d,ft-a/bx1d are mornsun s eft suppresser (figure 3) emc module recommended circuit pcb layout dual single (figure 4) emi test waveform (recommended circuit fingure 1- ) wra2405s-1wr2 ce ( class b, positive line ) wra2405s-1wr2 ce ( class b, negative line ) wrb2405s-1wr2 ce ( class b, positive line ) wrb2405s-1wr2 ce ( class b, negative line ) product typical performance curve tolerance envelope graph 120 100 80 60 40 20 0 -40 0 40 85 105120 o u t p u t p o w e r p e r c e n t ( % ) output current percent(%) ambient temp.() temperature derating graph safe operating area (figure 5)
the copyright and authority for the interpretation of the products are reserved by mornsun wra_s-1wr2 & wrb_s-1wr2 2013.07.25-a/3 page 5 of 7 efficiency vs input voltage curve (full load) 50 55 60 65 70 75 80 85 90 95 100 18 21 24 27 30 33 36 input voltage(v) efficiency(%) wra2405s-1wr2 efficiency vs output load curve (vin=vin-nominal) 0 10 20 30 40 50 60 70 80 90 100 102030405060708090100 total output current (%) efficiency(%) wra2405s-1wr2 efficiency vs input voltage curve (full load) 50 55 60 65 70 75 80 85 90 95 100 18 21 24 27 30 33 36 input voltage(v) efficiency(%) wrb2405s-1wr2 efficiency vs output load curve (vin=vin-nominal) 0 10 20 30 40 50 60 70 80 90 100 102030405060708090100 total output current (%) efficiency(%) wrb2405s-1wr2 dimensions,recommended footprint & packaging
the copyright and authority for the interpretation of the products are reserved by mornsun wra_s-1wr2 & wrb_s-1wr2 2013.07.25-a/3 page 6 of 7 test configurations input reflected-ripple current test setup input reflected-ripple current is measured with an inductor lin and capacitor cin to simulate the source impedance. dc cin lin dc load oscilloscope current probe lin(4.7 h) cin(220 f, esr < 1.0 at 100 khz) design considerations 1) requirement on output load to ensure this module operate efficiently and reliably, during operation, the minimum output load could not be less than 5% of the full load, otherwise output ripple may increase dramatically. if the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, suppose to use the resistance of 5% rated power, or use our company s products with a lower rated output power. 2) recommended circuit all the wra_s-1wr2 & wrb_s-1wr2 series have been tested according to the following recommended test circuit before leaving the factory (see figure 6). if you want to further decrease the input/output ripple, increase the value of the capacitance properly or choose capacitors with low esr. however, the capacitance of the output filter must be proper. if the capacitance is too big, a startup problem might arise. for every channel of output, under the condition of safe and reliable operation, the max capacitance must be less than the max capacitive load. general:cin1: 5v&12v 100 f 24v&48v 10 f cin2: 5v&12v 47 f 24v&48v 1 f lin: 4.7 h~12 h cs: 10 f~22 f cout: 100 f(typ.) lout: 2.2 h~10 h cd: 47nf/100v single output dual output +vo 0v cout 6 7 8 cs cin1 vin gnd 2 1 3 vc r lin ic d1 cd cin2 +vo 0v cout 6 8 7 cout lout lout -vo cin1 vin gnd 2 1 lin 3 vc r ic d1 cd cin2 (figure 6) 3) ctrl terminal when being open or with high impedance, the converter works well; when its pin is connected to high level voltage, the converter shut down. it should be noticed that the input current should be between 5-10ma, exceeding the maximum current of 20ma will cause permanent damage to the converter. the value of r can be derived as follows: 300 - 0 . 1 - - c d c i v v r = for detailed parameter, please refer to "emc recommended circuit". 4) input current when it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the ripp led voltage do not exceed the standard of module. input current of power supply should afford the flash startup average current of this kind of dc/dc module (figure 7). general: vin=5v iave =450ma vin=12v iave =220ma vin=24v iave =110ma vin=48v iave =55 ma i n p u t c u r r e n t ( a ) input voltage (v) input voltage range iave (figure 7) 5) it is not recommended to increase the output power capability by connecting two or more converters in parallel. the product is not hot-swappable
the copyright and authority for the interpretation of the products are reserved by mornsun wra_s-1wr2 & wrb_s-1wr2 2013.07.25-a/3 page 7 of 7 note: 1. min. load shouldn't be less than 5%, otherwise ripple maybe increased dramatically. if the product operates under min. load, it may not be guaranteed to meet all specifications listed. operation with minimum load will not damage the converter. 2. recommended dual output models unbalanced load is ? 5%, if the product operates > 5%, it may not be guaranteed to meet all specifications listed. please contact our technical support for more details. 3. max. capacitive load is tested at nominal input voltage and full load. 4. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 5. in this datasheet, all test methods are based on our corporate standards. 6. all characteristics are for listed models, and non-standard models may perform differently. please contact our technical support for more details. 7. please contact our technical support for any specific requirement. 8. specifications of this product are subject to changes without prior notice. mornsun science & technology co.,ltd. address: no. 5, kehui st. 1, kehui development center, science ave., guangzhou science city, luogang district, guangzhou,p.r.china. tel: 86-20-38601850 fax:86-20-38601272 e-mail: info@mornsun.cn http://www.mornsun-power.com
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