the copyright and authority for the interpretation of the products are reserved by mornsun vra_ld-15w&vrb_ld-15w b/2-2012 page 1 of 5 vra_d-10w & vrb_d-10w series 10w, 2:1 wide input isolated & regulated dual/single output dc-dc converter patent protection rohs part number system vra2405d-10w product series input voltage output voltage package style rated power features efficiency up to 86% wide input range(2:1) operating temperature: -40 c to +85 c 1.5kvdc isolation metal shielding package industry standard pinout mtbf>1,000,000 hours good high temperature propertie s, can meet the industrial products technical requirements applications the vra_d-10w & vrb_d-10w 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. selection guide input voltage(vdc) output current (ma) input current (ma)(typ.) model number 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 vra1205d-10w 5 1000 100 985 100 82 VRA1212D-10W 12 420 42 948 47 83 vra1215d-10w 15 330 33 937 47 84 vra1224d-10w 24 210 21 950 22 84 vrb1205d-10w 5 2000 200 968 100 80 vrb1212d-10w 12 830 83 939 100 82 vrb1215d-10w 15 667 66 970 100 82 vrb1224d-10w 12 (9-18) 20 24 420 42 926 30 50 47 83 vra2405d-10w 5 1000 100 494 100 83 vra2412d-10w 12 420 42 473 47 85 vra2415d-10w 15 330 33 492 47 84 vra2424d-10w 24 210 21 496 22 85 vrb2405d-10w 5 2000 200 505 100 83 vrb2409d-10w 9 1111 111 487 100 83 vrb2412d-10w 12 830 83 470 100 85 vrb2415d-10w 15 667 66 451 100 84 vrb2424d-10w 24 (18-36) 40 24 420 42 471 15 150 47 85 vra4805d-10w 5 1000 100 243 100 83 vra4812d-10w 12 420 42 229 47 86 vra4815d - 10w 15 330 33 236 47 86 vra4824d-10w 24 210 21 231 22 86 vrb4805d-10w 5 2000 200 247 100 83 vrb4812d-10w 12 830 83 231 100 86 vrb4815d-10w 15 667 66 237 100 86 vrb4824d-10w 48 (36-75) 80 24 420 42 231 5 100 47 86 note: 1.*input voltage can t exceed this value, or will cause the permanent damage. 2. models listed with strike-through text have been officially discontinued. 3. # for each output.
the copyright and authority for the interpretation of the products are reserved by mornsun vra_ld-15w&vrb_ld-15w b/2-2012 page 2 of 5 input specifications item test conditions min. typ. max. unit 12vdc input models -0.7 -- 25 24vdc input models -0.7 -- 50 input surge voltage (1000 ms) 48vdc input models -0.7 -- 100 12vdc input models -- -- 9 24vdc input models -- -- 18 start-up voltage 48vdc input models -- -- 36 12vdc input models -- -- 9 24vdc input models -- -- 18 under voltage shutdown 48vdc input models -- -- 36 vdc start-up time nominal input& constant resistance load -- 10 -- ms short circuit input power -- -- 3.5 w no-load power consumption -- 500 -- mw input filter l filter output specifications item test conditions min. typ. max. unit output power 1 -- 10 w positive voltage accuracy -- 1 3 negative voltage accuracy refer to recommended circuit -- 3 5 output voltage balance dual output, balanced loads -- 0.5 1 line regulation for vin change of 1% -- 0.2 0.5 load regulation 10% to 100% load -- 0.5 1 cross regulation dual output -- -- 5 % transient recovery time -- 200 500 s transient response deviation 25%~50%~25% rated load or 50%~75%~50% rated load range -- 3 5 % temperature drift 100% full load -- -- 0.03 %/ c ripple * -- 30 50 noise * 20mhz bandwidth -- 100 300 mvp-p over current protection full input voltage 120 -- -- % short circuit protection continuous, automatic recovery note: dual output models unbalanced load: 5%. *test ripple and noise by parallel cable method. see detailed operation instructions at testing of power converter section, application notes. common specifications item test conditions min. typ. max. unit isolation voltage tested for 1 minute and leakage current less than 1 ma 1500 -- -- vdc isolation resistance test at 500vdc 1000 -- -- m isolation capacitance input/output,100khz/0.1v -- 1000 -- pf switching frequency full load, nominal input -- 300 -- khz mtbf mil-hdbk-217f@25 1000 -- -- k hours case material aluminium alloy weight -- 23.5 -- g environmental specifications item test conditions min. typ. max. unit storage humidity -- -- 95 % operating temperature power derating (above 71) -40 -- 85 storage temperature -55 -- 125 temp. rise allowed at full load operating temperature curve range -- 75 -- lead temperature 1.5mm from case for 10 seconds -- -- 300 c cooling free air convection
the copyright and authority for the interpretation of the products are reserved by mornsun vra_ld-15w&vrb_ld-15w b/2-2012 page 3 of 5 emc specifications emi ce cispr22/en55022 classb external circuit refer to figure1- esd iec/en61000-4-2 contact 4kv perf. criteria b eft iec/en61000-4-4 2kv perf. criteria b external circuit refer to figure1- ems surge iec/en61000-4-5 2kv perf. criteria b external circuit refer to figure1- emc recommended circuit ldm2 c0 tvs ldm1 mov fuse c1 v in gnd + vin gnd +vo -vo (0v) eut load c2 c4 c3 (figure1) vra_d-10w recommended external circuit parameters model vin: 12v vin: 24v vin: 48v fuse choose according to practical input current mov -- 10d560k 10d101k ldm1 -- 56 h 56 h tvs smcj28a smcj48a smcj90a ems c0 680 f/25v 120 f/50v 120 f/100v c1 1 f/50v 1 f/50v 1 f/100v ldm2 12 h 12 h 12 h c2 4.7 f/50v 4.7 f/50v 4.7 f/100v c3 -- -- 100pf/2kv emi c4 -- -- 100pf/2kv vrb_d-10w recommended external circuit parameters model vin: 12v vin: 24v vin: 48v fuse choose according to practical input current mov -- 10d560k 10d101k ldm1 -- 56 h 56 h tvs smcj28a smcj48a smcj90a ems c0 680 f/25v 120 f/50v 120 f/100v c1 1 f/50v 1 f/50v 1 f/100v ldm2 12 h 12 h 12 h emi c2 4.7 f/50v 4.7 f/50v 4.7 f/100v note: 1. in figure 1,partis ems recommended external circuit, partis emi recommended external circuit. choose according to requirements. ? 2. if there is no recommended parameters, the model no require the external component. emc recommended circuit pcb layout dual single (figure 2)
the copyright and authority for the interpretation of the products are reserved by mornsun vra_ld-15w&vrb_ld-15w b/2-2012 page 4 of 5 product typical curve operating temp.( ) c efficiency vs input voltage (full load) 50 54 58 62 66 70 74 78 82 86 90 18202224262830323436 input voltage(v) efficiency(%) vra2405d-10w efficiency vs output load curve (vin=vin-nominal) 50 54 58 62 66 70 74 78 82 86 90 10 20 30 40 50 60 70 80 90100 output current percent(%) efficiency(%) vra2405d-10w efficiency vs input voltage (full load) 50 54 58 62 66 70 74 78 82 86 90 36404448525660647075 input voltage(v) efficiency(%) vra4805d-10w vrb4805d-10w efficiency vs output load curve (vin=vin-nominal) 50 54 58 62 66 70 74 78 82 86 90 10 20 30 40 50 60 70 80 90100 output current percent(%) efficiency(%) vra4805d-10w vrb4805d-10w outline dimensions, recommended footprint & packaging 54.30[2.138] 1 5 . 0 0 [ 0 . 5 9 1 ] 2 0 . 0 0 [ 0 . 7 8 7 ] 13.20 [0.520] 1 2 3 4 5 gnd vin +vo no pin 0v gnd vin +vo 0v -vo 5 . 0 8 [ 0 . 2 0 0 ] 2 0 . 3 2 [ 0 . 8 0 0 ] 2 5 . 4 0 [ 1 . 0 0 0 ] 1 1 . 2 0 [ 0 . 4 4 1 ] 4 . 1 0 [ 0 . 1 6 1 ] 50.80 [2.000] 20.32 [0.800] 1 2 3 4 5 1 2 3 4 5 1 2 3 5 ? 1 .30[0.051] ? 0.80[0.031] note: unitmm[inch] general toletrances 0.50mm[ 0.020inch] : : l=220mm[8.661inch] pcstube: 7pcs / note: grid2.54*2.54mm . inner packagingdimensions255*170*80mm outer packaging dimensions(with six inner packaging boxes): 375*280*270mm mechanical dimensions (bottomview) (frontview) note: unit:mm[inch] pin diameter tolerances: 0.10mm[ 0.004inch] general tolerances: 0.50mm[ 0.020inch] footprint details pin single dual recommended footprint dual single tube outline dimensions
the copyright and authority for the interpretation of the products are reserved by mornsun vra_ld-15w&vrb_ld-15w b/2-2012 page 5 of 5 test configurations input reflected-ripple current test setup input reflected-ripple current is measured with a inductor lin and cin to simulate source impedance. dc cin lin dc load oscilloscope current probe lin(4.7 h) cin(220 f, esr < 1.0 at 100 khz) design & apply considerations 1) requirement on output load to ensure this module can operate efficiently and reliably, during operation, the minimum output load could not be less than 10% of the full load. 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, or use our company s products with a lower rated output power. 2 ) recommended circuit all the vra_d-10w&vrb_d-10w series have been tested accordi ng to the following recommended testing circuit before leaving factory. this series should be tested under load. never be tested under no load (see figure 3). if you want to further decrease the output ripple, you can increase capacitance properly or choos e capacitors with low esr. however, the capacitance can t exceed the maximum capacitor load in the list (table 1). dc dc vin gnd +vo 0v cin cout vin gnd +vo 0v cin cout dc dc -vo cout dual output single output (figure 3) external capacitor table (table 1) capacitance output voltage cout # ( f) cin( f) 5v 220 12v,15v 100 single 24v 47 5v 100 12v, 15v 47 dual 24v 22 100 note: # for each output. 3) input 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 startup current of this kind of dc/dc module. (figure 4). i n p u t c u r r e n t ( a ) input voltage (v) input voltage range ip (figure 4) 4) external capacitor to ensure this module operate efficiently and reliably, it s recommend to connect external capacitor in the application field.(see table 1) 5) no parallel connection or plug and play note: 1. the load shouldn't be less than 10%, otherwise ripple will increase dramatically. operation under minimum load will not damage the converter; however, they may not meet all specification listed, and that will reduce the life of product. 2. max. capacitive load tested at nominal input voltage, full load and constant resistive load. 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. 6. our company offer custom products. 7. specifications subject to change without 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 http://www.mornsun-power.com
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