the copyright and authority for the interpretation of the products are reserved by mornsun urf_lp-20w 2013.05.24-a/1 page 1of 6 urf_lp-20w series 20w, wide input, high isolated & regulated single output dc-dc converter patent protected rohs part number system urf2405lp-20w rated power package style output voltage input voltage product series features efficiency up to 89% 4:1 wide input voltage range low temperature rise short circuit protection 3kvac isolation operating temperature range: -40 c ~ +85 c industry standard pinout industrial level specifications meet cispr22/en55022 class a application urf_lp- 20w series are applied to wide voltage range input situation such as power systems, data transmission device, battery power supply device, telecommunication device, distributed power supply system, remote control system, industrial robot system 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 urf2405lp-20w 5 4000 200 947 60 10000 88 urf2412lp-20w 12 1667 84 947 15 1600 88 URF2415LP-20W 15 1334 67 937 15 1000 89 urf2424lp-20w 24 (9-36) 40 24 834 42 937 20 500 89 urf4805lp-20w 5 4000 200 473 35 10000 88 urf4812lp-20w 12 1667 84 473 10 1600 88 urf4815lp-20w 15 1334 67 469 10 1000 89 urf4824lp-20w 48 (18-75) 80 24 834 42 469 10 30 500 89 note: series with suffix a2s are chassis mounting with suffix a4s are din-rail mounting, for example urf2405lp-20wa2s is chassis mounting ,urf2405lp-20wa4s is din-rail mounting ; absolute maximum rating without damage on the converter; the efficiency of "a2s" and "a4s" is approx. 2% lower for the protection of inverse polarity. input specifications item test conditions min. typ. max. unit 24vdc input -0.7 -- 50 input surge voltage (1sec.max.) 48vdc input -0.7 -- 100 24vdc input -- -- 9 start-up voltage 48vdc input -- -- 17.8 24vdc input 7.8 -- -- under voltage shutdown 48vdc input 16 -- -- vdc start-up time nominal input& constant resistance load -- 10 -- ms models on ctrl open or connect ttl high level (2.5-12vdc) models off ctrl connect gnd or low level (0-1.2vdc) ctrl* input current (models off) -- 1 -- ma input filter pi filter note: *the ctrl control pin voltage is refer to gnd.
the copyright and authority for the interpretation of the products are reserved by mornsun urf_lp-20w 2013.05.24-a/1 page 2of 6 output specifications item test conditions min. typ. max. unit output voltage accuracy -- 1 3 line regulation full load, input voltage from low to high -- 0.2 0.5 load regulation 5% to 100% load -- 0.5 1 % transient recovery time -- 300 500 s transient response deviation 25% load step change -- 3 5 % temperature drift 100% load -- 0.02 -- %/ c ripple & noise* 20mhz bandwidth -- 70 100 mvp-p trim -- 10% -- 5vdc output -- 6.2 -- 12vdc output -- 15 -- 15vdc output -- 18 -- output over voltage protection 24vdc output -- 28.8 -- vdc over current protection -- 150 -- % short circuit protection input voltage range hiccup, continuous, automatic recovery note:* ripple and noise 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 and leakage current less than 5 ma (except the pin of ctrl) 3000 -- -- vac isolation resistance input-output, test at 500vdc 1000 -- -- m isolation capacitance input-output,100khz/0.1v -- 1000 -- pf switching frequency pwm mode -- 300 -- khz mtbf mil-hdbk-217f@25 1000 -- -- k hours case material plastic (ul94-v0) pcb mounting 51.50 26.50 12.00 a2s chassis mounting 76.00 31.50 21.20 size a4s din-rail mounting 76.00 31.50 25.80 mm pcb mounting -- 25 -- a2s chassis mounting -- 47 -- weight a4s din-rail mounting -- 67 -- g environmental specifications item test conditions min. typ. max. unit storage humidity non condensing 5 -- 95 % operating temperature power derating (above 65 , see figure 3) -40 -- 85 storage temperature -40 -- 125 the max. case temperature operating temperature curve range -- -- 105 lead temperature 1.5mm from case for 10 seconds -- -- 300 c cooling free air convection shake 10-55hz, 10g, 30 min. along x, y and z emc specifications ce cispr22/en55022 class a without external circuit / class b(external circuit refer to figure1- ) emi re cispr22/en55022 class a without external circuit / class b(external circuit refer to figure1- ) esd iec/en61000-4-2 contact 4kv perf. criteria b rs iec/en61000-4-3 10v/m perf. criteria a eft iec/en61000-4-4 2kv (external circuit refer to figure1- ) perf. criteria b surge iec/en61000-4-5 2kv (external circuit refer to figure1- ) 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
the copyright and authority for the interpretation of the products are reserved by mornsun urf_lp-20w 2013.05.24-a/1 page 3of 6 emc recommended circuit ldm2 c0 tvs ldm1 mov fuse c1 v in gnd + vin gnd +vo -vo (0v) eut load cy2 cy1 (figure1) note: in figure 1,part is ems recommended external circuit, part is emi recommended external circuit. choose according to requirements. recommended external circuit parameters: model vin:24v vin:48v fuse choose according to actual input current mov s14k35 s14k60 ldm1 56 h tvs smcj48a smcj90a c0 330 f/50v 330 f/100v c1 1 f /50v 1 f /100v ldm2 4.7 h cy1,cy2 1nf/5kv emc recommended circuit pcb layout (figure 2) note: the pad space between input and output (cy1/cy2) must 2mm. emi test waveform(recommended circuit 1- ) urf2405lp-20w ce (class b, positive line) urf2405lp-20w ce (class b, negative line) urf4815lp-20w ce (class b, positive line) urf4815lp-20w ce (class b, negative line) urf2405lp-20w re(class b, horizontal) urf2405lp-20w re(class b, vertical) urf4815lp-20w re(class b, horizontal) urf4815lp-20w re(class b, vertical)
the copyright and authority for the interpretation of the products are reserved by mornsun urf_lp-20w 2013.05.24-a/1 page 4of 6 product typical performance curve temperature derating graph 0 20 40 60 80 100 120 -40 0 40 80 120 65 85 operating temp( c) o u t p u t p o w e r p e r c e n t ( % ) safe operating area (figure 3) efficiency vs input voltage curve (full load) 50 55 60 65 70 75 80 85 90 95 100 9121518212427303336 input voltage(v) efficiency(%) urf2405lp-20w efficiency vs input voltage curve (full load) 50 55 60 65 70 75 80 85 90 95 100 1824303642485460667275 input voltage(v) efficiency(%) urf4815lp-20w efficiency vs output load curve (vin=vin-nominal) 0 10 20 30 40 50 60 70 80 90 100 5102030405060708090100 total output current (%) efficiency(%) urf2405lp-20w efficiency vs output load curve (vin=vin-nominal) 0 10 20 30 40 50 60 70 80 90 100 5102030405060708090100 total output current (%) efficiency(%) urf4815lp-20w urf-lp-20w outline dimensions, recommended footprint
the copyright and authority for the interpretation of the products are reserved by mornsun urf_lp-20w 2013.05.24-a/1 page 5of 6 urf_lp-20wa2s schassis mounting outline dimensions footprint details: pin 1 2 3 4 5 6 function ctrl gnd vin 0v trim +vo urf_lp-20wa4s din-rail mounting outline dimensions din-rail modules are fitting to ts35 rails footprint details: pin 1 2 3 4 5 6 function ctrl gnd vin 0v trim +vo package diagram pcb mounting series without heat sink special package series a2s/a4s
the copyright and authority for the interpretation of the products are reserved by mornsun urf_lp-20w 2013.05.24-a/1 page 6of 6 test configurations input reflected-ripple current test setup input reflected-ripple current is measured with an inductor lin and capacitor 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) trim application & trim resistance application circuit for trim (part in broken line is the interior of models) 0v r 2 r 1 r 3 v ref r t trim +vo 0v r 2 r 1 r 3 v ref r t trim +vo trim up trim down formula for resistance of trim up: a= vref vo -vref r 1 r= t ar 2 r-a 2 -r 3 down: a= vref vo -vref r 2 r= t ar 1 r-a 1 -r 3 note: leave open if not used. value for r1, r2, r3, and v ref refer to the above table 1. r t : resistance of trim. a: user- defined parameter, no actual meanings. vo : the trim up/down voltage. (table 1) vo parameter 5(vdc) 12(vdc) 15(vdc) 24 (vdc) r1(k ) 2.883 10.971 14.497 24.872 r2(k ) 2.864 2.864 2.864 2.863 r3(k ) 12.1 17.8 17.8 20 vref(v) 2.5 2.5 2.5 2.5 design considerations 1) recommended circuit all the urf_lp-20w series have been tested according to the following recommended test circuit before leaving the factory (see figure 4). if you want to further decrease the input/output ripple, you can increase a capacitance- values properly or choose capacitors with low esr, but the total capacitance of the filter capacitor must not exceed the max capacitive load. t he recommended capacitance of its filter capacitor sees table 2. dc dc vin gnd +vo 0v cin cout single output (figure 4) (table 2) 2) it is not recommended to increase the output power capability by connecting two or more converters in parallel.the product is not hot-swappable output voltage vdc cout f cin f 5 470 12/15 220 24 100 100 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 under minimum load will not damage the converter. 2. max. capacitive load is tested at input voltage range and full 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 test methods are based on our corporate standards. 5. all characteristics are for listed models, and non-standard models may perform differently. please contact our technical support for more details. 6. please contact our technical support for any specific requirement. 7. 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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