applications ? servers, switches and data storage ? networking gear ? wireless communications ? data communications ? distributed power architecture ? telecommunications ? semiconductor test equipment ? industrial / medical the u20 families of high efficiency dc/dc converters offer power le vels of up to 20 watt, which exceeds that of other bricks wi th the same industry-standard pinouts, while providing much smaller footprints. with a ultra- wide input vo ltage range and single and multi-out puts, ranging from 3.3 to 15 volts, these converte rs provide versatility without sacr ificing the board space. all models feature an input filter, input undervoltage lo ckout, output current limiting and short ci rcuit protection. the fully enclosed, encapsulated construction achieves very efficient heat transfer with no hot spots. all converters combine creative design practices with highly derated power devices to achieve very high reliability, hi gh performance and low cost solution to systems designers. specifications & features summar y ? 1500v, 10m input-to-output isolation ? no airflow or heatsink required ? enclosed six-sided metal shield construction for low emi/rfi ? efficiency 84% ? 4:1 input range ? pi input filter ? continuous short circuit protection ? meets en55022 class a, conducted ? remote on/off control ? delivers up to 20w in 2?x1.6? package with industry-standard pinouts pin # u20 s (ingle) u20 d (ual) 1 on/off on/off 3 vin - vin - 4 vin + vin + 5 trim trim 6 vout - vout - 7 vout + common 8 no pin vout + u20 series dc/dc modules all dimensions are in inches [mm] all pins are dia. 0.040 [1.02] pin material: gold plated brass typical at ta= +25 oc under nominal line voltage and 75% load c onditions, unless noted. the information and specifications contained in this brief are believed to be accurate and reliable at the time of publication. spec ifications are subject to chan ge without notice. refer to product specification sheet for performance characteristics and application guidelines. consult factory for hundreds of other available input/output voltage configurations. tolerances inches ? xx 0.040 ? xxx 0.010 app roval pendin g bottom vie w u20 family intronics power inc. 1400 providence highway, building 2, norwood, ma 02062-5015 ? phone: 1-781-551-5500 ? fax: 1-781-551-5555 rev. b model number v in v out i out i no load i full load eff case u20-12s5 9-36 vdc 5.0 vdc 4000.0 ma 15.0 ma 1029.0 ma 81% u u20-12s12 9-36 vdc 12.0 vdc 1670.0 ma 15.0 ma 1006.0 ma 83% u u20-12s15 9-36 vdc 15.0 vdc 1330.0 ma 15.0 ma 1004.0 ma 83% u u20-12d12 9-36 vdc 12.0 vdc 833.0 ma 20.0 ma 1 004.0 ma 83% u u20-12d15 9-36 vdc 15.0 vdc 666.0 ma 20.0 ma 1004.0 ma 83% u u20-12d5 9-36 vdc 5.0 vdc 2000.0 ma 20.0 ma 1004.0 ma 83% u u20-12s3.3 9-36 vdc 3.3 vdc 4000.0 ma 15.0 ma 705.0 ma 78% u u20-48s5 18-72 vdc 5.0 vdc 4000.0 ma 10.0 ma 508.0 ma 82% u u20-48s12 18-72 vdc 12.0 vdc 1670.0 ma 10.0 ma 497.0 ma 84% u u20-48s15 18-72 vdc 15.0 vdc 1330.0 ma 10.0 ma 496.0 ma 84% u u20-48d12 18-72 vdc 12.0 vdc 833.0 ma 15.0 ma 496.0 ma 84% u u20-48d15 18-72 vdc 15.0 vdc 666.0 ma 15.0 ma 496.0 ma 84% u u20-48d5 18-72 vdc 5.0 vdc 2000.0 ma 15.0 ma 496.0 ma 84% u u20-48s3.3 18-72 vdc 3.3 vdc 4000.0 ma 10.0 ma 353.0 ma 78% u input specifications input voltage range 12v nominal: 9-36vin 48v nominal: 18-72vin input filter pi type positive logic remote on/off control see note 3 output specifications voltage accuracy single output +/-1.0% max. voltage accuracy dual + output +/-1.0% max. voltage accuracy dual - output +/-2.0% max. voltage balance, dual output at full load +/-1.0% max. transient response single 25% step load change <500u sec. dual fl, 1/2l +/- 1% error band <500u sec. external trim adj. range +/-10% ripple and noise 20mhz bw 20mv rms, max. 75mv p-p. max. temperature coefficient +/-0.02% / o c max. short circuit protection continuous line regulation 1 , single dual / output +/-0.5% max. load regulation 2 , single dual / output +/-0.5% max. general specifications efficiency see table isolation capacitance 1500 vdc min. isolation resistance 10 8 ohms min. switching frequency 300khz, typ operating temperature range -25 o c to +71 o c derating, above 60 o c linearly to zero power at +100 o c case temperature 100 o c max. storage temperature range -55 o c to +105 o c emi / rfi six sided continuous shield dimensions 2x1.6x0.45 inches (50.8 x 40.64 x 11.43 mm) case material black coated copper with non-conductive base notes 1 measured from high line to low line 2 measured from full load to 1/4 load 3 remote on/off control : on > +5.5vdc or open circuit off < 1.8vdc control common---referenced to input minus 1.80 [45.72] 2.00 [50.80] 0.80 [20.32] 0.40 [10.16] 0.20 [5.08] 0.10 [ 2.54 ] 0.30 [7.62] 0.60 [15.24] 0.40 [10.16] 0.20 [5.08] 0.45 [11.43] side vie w 1 3 4 7 6 5 0.40 [10.16] 8 1.60 [40.64]
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