the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 1 of 8 urb_ymd-20w series 20w,ultra wide input , isolated & regulated single output dip packaging, dc-dc converter patent protected rohs part number system URB2405YMD-20W rated power package output voltage input voltage product series features 4:1 ultra wide input voltage range small footprint,20w,1 1inch efficiency up to 90% 1.5kvdc isolation short circuit protection automatic recovery over load protection over temperature protection input under voltage protection output over voltage protection metal shielding package meet cispr22/en55022 class a low temperature rise, industrial level specifications inverse polarity protection for a2s chassis mounting and a4s din-rail mounting application urb_ymd-20w series are applied to the data transmission device, battery-powered equipment, communications equipment, distributed power systems, mixed analog / digital systems, remote control system, industrial robot system and wide input voltage occasions. 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 urb2403ymd-20w 3.3 5000 250 780 50 10300 87 URB2405YMD-20W 5 4000 200 925 60 5400 90 urb2412ymd-20w 12 1667 84 925 60 1200 90 urb2415ymd-20w 24 (9-36) 40 15 1333 67 925 60 750 90 urb4803ymd-20w 3.3 5000 250 390 25 10300 88 urb4805ymd-20w 5 4000 200 463 30 5400 90 urb4812ymd-20w 12 1667 84 463 30 1200 90 urb4815ymd-20w 48 (18-75) 80 15 1333 67 463 30 30 750 90 note: series with suffix h are heat sink mounting, series with suffix "a2s" are chassis mounting, with suffix "a4s" are din-rail mounting, for example URB2405YMD-20Wha2s is chassis mounting with heat sink, URB2405YMD-20Wa4s is din-rail mounting without heat sink. if the application has a higher requirement for heat dissipation, you can choose modules with heat sink. absolute maximum rating without damage on the converter, but it isn't recommended. 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.) 48 vdc input -0.7 -- 100 24vdc input -- -- 9 start-up voltage 48 vdc input -- -- 18 24vdc input 6 -- -- under voltage shutdown 48 vdc input 15 -- -- vdc
the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 2 of 8 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) -- 5 -- ma input filter pi filter note:*the ctrl control pin voltage is refer to gnd. 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 us transient response deviation 25% load step change,0.1a/us,0.5ms -- 3 5 % temperature drift coefficient 100% load -- 0.02 -- %/ c ripple & noise* 20mhz bandwidth -- 50 120 mv p-p trim -- 10% -- 3.3v output -- 3.9 -- 5v output -- 6.2 -- 12v output -- 15 -- output over voltage protection 15v output -- 18 -- vdc output over current protection -- 150 -- % over temperature protection -- 110 -- c output short circuit protection input voltage range 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 , leakage current less than 1 ma 1500 -- -- vdc isolation resistance input-output, test at 500vdc 1000 -- -- m isolation capacitance input-output, 100khz/0.1v -- 1000 -- pf switching frequency pwm mode -- 320 -- khz mtbf mil-hdbk-217f@25 1000 -- -- k hours case material aluminum alloy pcb mounting without heat sink 25.4x25.4x11.7 pcb mounting with heat sink 25.4x25.4x16.4 a2s chassis mounting without heat sink 76.0x31.5x21.2 a2s chassis mounting with heat sink 76.0x31.5x25.2 a4s din-rail mounting without heat sink 76.0x31.5x25.8 size a4s din-rail mounting with heat sink 76.0x31.5x29.8 mm pcb mounting without heat sink -- 15 -- pcb mounting with heat sink -- 20 -- a2s chassis mounting without heat sink -- 35 -- a2s chassis mounting with heat sink -- 40 -- a4s din-rail mounting without heat sink -- 54 -- weight a4s din-rail mounting with heat sink -- 59 -- g e nvironmental specifications item test conditions min. typ. max. unit
the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 3 of 8 storage humidity non condensing 5 -- 95 % operating temperature refer to temperature derating curve see figure3 -40 -- 85 storage temperature -55 -- 125 operating temperature curve range no wind -- -- 105 25,rated input,100%load output no wind -- 58 -- the max. case temperature 60,rated input,100%load output no wind -- 93 -- lead temperature 1.5mm from case for 10 seconds -- -- 300 c cooling free air convection vibration 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 emc recommended circuit ldm2 c0 tvs ldm1 mov fuse c1 v in gnd + vin gnd +vo 0v eut load cy1 cy2 (figure 1) recommended external circuit parameters: model vin:24 v vin:48 v fuse choose according to practical 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/2kv note: in figure 1, part is ems recommended external circuit, part is emi recommended external circuit. choose according to requirements. ? emc module recommended circuit pcb layout (figure 2) note: the pad space between input and output (cy1/cy2) must 2mm.
the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 4 of 8 emi test waveform (recommended circuit fingure 1- ) URB2405YMD-20W ce (class b, positive line) URB2405YMD-20W ce (class b, negative line) urb4815ymd-20w ce (class b, positive line) urb4815ymd-20w ce (class b, negative line) URB2405YMD-20W re(class b, horizontal) URB2405YMD-20W re(class b, vertical) urb4815ymd-20w re(class b, horizontal) urb4815ymd-20w re(class b, vertical) product typical curve temperature derating curve output voltage 5v output voltage >5v 0 20 40 60 80 100 120 -40 0 40 85 120 55 65 operating temp( c) o u t p u t p o w e r p e r c e n t ( % ) withoutheatsink with heatsink safe operating area 0 20 40 60 80 100 120 -40 0 40 85 120 60 70 operating temp( c) o u t p u t p o w e r p e r c e n t ( % ) withoutheatsink with heatsink safe operating area (figure3)
the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 5 of 8 efficiency vs input voltage curve (full load) 50 55 60 65 70 75 80 85 90 95 100 9121518212427303336 input voltage(v) efficiency(%) URB2405YMD-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(%) urb4815ymd-20w efficiency vs input voltage curve (full load) 50 55 60 65 70 75 80 85 90 95 100 1824303642485460667275 input voltage(v) efficiency(%) urb4815ymd-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(%) urb4815ymd-20w urb_ymd-20w pcb mounting outline dimensions,recommended footprint (without heat sink)
the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 6 of 8 urb_ymd-20wh pcb mounting outline dimensions (with heat sink) urb_ymd-20wa2s chassis mounting with outline dimensions footprint details pin 1 2 3 4 5 6 function ctrl gnd vin 0v trim +vo urb_ymd-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
the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 7 of 8 package diagram pcb mounting series without heat sink pcb mounting series with heat sink special package series a2s/a4s 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 3.3(vdc) 5(vdc) 12(vdc) 15(vdc) r1(k ) 4.841 15 10 15 r2(k ) 2.87 15 2.609 3 r3(k ) 12.4 15 15 20 vref(v) 1.24 2.5 2.5 2.5 design considerations recommended circuit all the urb_ymd-20w series have been tested according to the following recommended testing circuit before leaving factory (see figure 4) the product must be tested with load. if you want to further decrease the input surge voltage and the output ripple, you can increase a capacitance properly or choose capacitors with low esr .it sh ould also be noted that the capacitance of filter capacitor must be proper. if the capacitance is too big, a startup problem might arise. for every channel of output, provided the safe and reliable operation is ensured, the recommended capacitance of its filter capacitor sees (table 2). dc dc vin gnd +vo 0v cin cout (figure 4)
the copyright and authority for the interpretation of the products are reserved by mornsun urb_ymd-20w 2013.05.21-a/2 page 8 of 8 external capacitor table (table 2) capacitance vout cout( f) cin( f) 3.3v/5v 470 12v/15v 220 100 it is not recommended to increase the output power capability by connecting two or more converters in parallel. the product is not hot-swappable. 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. 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 input voltage range 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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