wpn20r rev a 3/2000 page 1 product selection chart specifications are at t a = +25c nominal input voltage, rated output current unless otherwise specified. corporate: www.cdtechno.com product: www.cdpowerelectronics.com 20 watt regulated dc/dc converter wpn20r operating temperature range: -40c to +100c industry standard pinout input and output filtering low profile shell single and dual outputs high efficiency remote on/off function output trim function zero load operation en 60950, ul1950, c-ul, vde agency approvals nominal rated output current (a) i nput input output min nom current efficiency model* voltage (vdc) voltage (vdc) load load nom load (%) wpn20r12s03 12 3.3 0.0 6.00 2.00 82 wpn20r12s05 12 5.0 0.0 4.00 2.00 84 wpn20r12s12 12 12.0 0.0 1.66 2.00 86 wpn20r12s15 12 15.0 0.0 1.33 2.00 86 wpn20r12d05 12 5.0 0.0 2.00 2.00 84 wpn20r12d12 12 12.0 0.0 0.83 2.00 86 WPN20R12D15 12 15.0 0.0 0.67 2.00 86 wpn20r24s03 24 3.3 0.0 6.00 1.00 83 wpn20r24s05 24 5.0 0.0 4.00 1.00 84 wpn20r24s12 24 12.0 0.0 1.66 1.00 87 wpn20r24s15 24 15.0 0.0 1.33 1.00 87 wpn20r24d05 24 5.0 0.0 2.00 1.00 85 wpn20r24d12 24 12.0 0.0 0.83 1.00 87 wpn20r24d15 24 15.0 0.0 0.67 1.00 87 wpn20r48s03 48 3.3 0.0 6.00 0.50 83 wpn20r48s05 48 5.0 0.0 4.00 0.50 85 wpn20r48s12 48 12.0 0.0 1.66 0.50 88 wpn20r48s15 48 15.0 0.0 1.33 0.50 86 wpn20r48d05 48 5.0 0.0 2.00 0.50 85 wpn20r48d12 48 12.0 0.0 0.83 0.50 87 wpn20r48d15 48 15.0 0.0 0.67 0.50 87 the wpn20r series is a family of high performance dc/dc converters available in three input voltage ranges of 9-18v, 18-36v and 33-75v. the unit is housed in a space saving aluminum shell and combines low cost with high performance across all line and load conditions. the 300khz switching frequency and forward converter topology provide excellent performance across all line and load conditions in a space saving package. other features include: full regulation down to zero load, under voltage lock-out, internal temperature shutdown, soft start, remote on/off and over current protection. an output trim feature is provided, allowing the user to compensate for long line lengths. the wpn20r series is assembled using a fully automated process incorporating 100% surface mounted components for increased reliability. applications include: telecom- munications, battery powered sytems, process control equipment, transportation equipment and distributed power systems. note: other input to output voltages may be available. please consult factory.
wpn20r rev a 3/2000 page 2 ordering information specifications, all models specifications are at t a = +25c nominal input voltage, rated output current unless otherwise specified. general output input parameter conditions min typ max units input voltage range 9 12 18 v dc 18 24 36 v dc 33 48 75 v dc reflected ripple current all input ranges 50 mapk-pk input control temperature shutdown case 105 115 c temperature hysteresis 10 c quiescent standby current current into + v in 810ma undervoltage control see attached plots output isolation rated voltage 1500 v dc test voltage 60hz, 10 seconds 1500 v dc resistance 10 gw capacitance 400 pf leakage current 30 marms rated power 20 w voltage setpoint accuracy 1.5 % temperature coefficient 0.005 %/c line regulation singles high line to low line 0.1 % duals high line to low line 0.5 % load regulation singles mn load to nom. load 0.5 % duals mn load to nom. load 2.0 % ripple & noise single outputs bw = 5hz to 20mhz 60 100 m vp-p dual outputs bw = 5hz to 20mhz 50 100 m vp-p output adjust range see attached plots short circuit and overcurrent protection continuous max capacitive load 550 mf/a general switching frequency 300 khz mttf per ml-hdbk-217 circuit stress method ground benign ta = +25 unmodified database 1,400,000 hr package weight 32 g temperature specification case -40 + 85 c operation case -40 + 85 c storage -55 +125 c logic compatibility .............................................. open collector ttl ec on .............................................................................. open circuit ec off ...................................................................................... < 0.7v shutdown idle current ............................................................... 8ma remote on/off control wpn20r xxyzz device family 20w regulated dc/dc unit model number xx = input range, e.g. 48v y = number of outputs (s=single; d=dual) zz = output voltage, e.g. ?05? for 5v
wpn20r rev a 3/2000 page 3 thermal derating curve simplified circuit diagram temperature (c) percentage of rated output load (%) -40 0 85 95 100 105 110 115 120 130 100 80 60 40 20 0 ambient case mechanical notes: all dimensions are in inches (millimeters). grid: 0.100 inches (2.54 millimeters) pin placement: tolerance: 0.015 marked with: specific model ordered, date code, job code. material: units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance, wide operating temperature range, and good electrical properties under high humidity environments. the encapsulant and outer shell of the unit have ul94v-0 ratings. lead material is brass with a solder plated surface to allow ease of solderability. wpn20rxxyzz pin side down side view pin side up 0.425 + 0.00 (10.80 + 0.08) 0.150 (3.81) 0.040 + 0.002 (1.02 + 0.05) 0.015 + 0.003 (0.38 + 0.08) 1.990 + 0.005 (50.55 + 0.13) 1.590 + 0.005 (40.39 + 0.13) 1 2 3 4 5 6 7 8 pin function number singles duals 1 +vin +vin 2 -vin -vin 3 no pin no pin 4 remote on/off remote on/off 5 no pin +vout 6 +vout common 7 -vout -vout 8 trim trim pin connections undervoltage lockout threshold voltages nominal input shutdown low shut down high voltage range voltage (v1) voltage (v2) off on 12 7 8.8 24 15.5 17 48 30 33 specifications typical at ta=25c, rated output current. hysteresis graph hysteresis graph
wpn20r rev a 3/2000 page 4 performance graphs power electronics division, united states 3400 e britannia drive, tucson, arizona 85706 tel: 800.547.2537 fax: 520.770.9369 c&d technologies, (ncl) milton keynes mk14 5bu uk tel: +44 (0)1908 615232 fax: +44 (0)1908 617545 any data, prices, descriptions or specifications presented herein are subject to revision by c&d technologies, inc. without not ice. while such information is believed to be accurate as indicated herein, c&d technologies, inc. makes no warranty and hereby disclaims all warranties, express or impli ed, with regard to the accuracy or completeness of such information. further, because the product(s) featured herein may be used under conditions beyond its cont rol, c&d technologies, inc. hereby disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particula r use or in any specific application or arising from any course of dealing or usage of trade. the user is solely responsible for determining the suitability of the product(s) feat ured herein for user?s intended purpose and in user?s specific application. c&d technologies, inc. does not warrant or recommend that any of its products be used in any l ife support or aviation or aerospace applications. efficiency (%) 15v 12v 5v 3v output ripple vs. temperature normalized output ripple -40 -15 25 65 110 tcase (c) trim resistor vs. output voltage change 50 45 40 35 30 25 20 15 10 5 0 1098 76 5 432 1 percentage change in output voltage trim resistor (k ohms) 5 5 3 -trim +trim 10 5 0 -5 -10 -40 -15 25 65 110 100% load 20% load tcase (c) change in efficiency (%) -10 -5 0 5 10 change in efficiency (%) 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 vin efficiency vs. input voltage ll nom hl 50%load 10%load 100%load percentage change in output voltage 100 90 80 70 60 50 40 30 20 10 0 10 9 8 7 6 5 4 3 2 1 trim resistor vs. output voltage change trim resistor (k ohms) efficiency vs. output load 90 85 80 75 70 65 60 55 50 10 20 40 50 60 80 100 output load (% or rated) 1.4 1.2 1 0.8 0.6 0.4 output ripple vs. input voltage normalized output ripple vin ll nom hl 12 15 15 +trim -trim trim 1.2 1 0.8 0.6 efficiency vs. temperature
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