PWR72 5/99 rev b page 1 3 w att u nregulated w ide i nput r ange dc/dc c onverter features l low price l high power output: 3 watts l wide input voltage range: 5v dc to 22v dc l isolation barrier 100% tested per ul544, vde750, and csa c22.2 dielectric withstand l isolation barrier leakage current 100% tested at 240v ac : 3a max l low isolation barrier capacitance: 10pf l single-channel; dual output l six-sided shielding description the PWR72 is a 3w, single-channel, dual-output dc/dc con- verter designed for low cost spot power conversion and ground elimination applications. it provides a plus and minus output voltage approximately equal to the input voltage magnitude. the PWR72 operates over a wide range of input voltages from 5v dc to 22v dc . its unregulated outputs give the PWR72 high ef?ciency power conversion. surface-mounted devices and manufacturing processes are used in the PWR72 to give the user a device which is more envi- ronmentally rugged than most dc/dc converters. the use of surface-mounted technologies also gives the PWR72 superior isolation voltage. a third advantage of using surface-mounted technologies is low manufacturing cost. PWR72 mechanical notes: all dimensions are in inches (millimeters). grid: 0.100 inches (2.54 millimeters) marked with: speci?c model ordered, date code, job code. material: units are encapsulated in a low thermal resistance mold- ing compound which has excellent chemical resistance, wide operating temperature range, and good electri- cal properties under high humidity environments. lead material is brass with a solder plated surface to allow ease of solderability. obsolete product contact factory for replacement model
PWR72 5/99 rev b page 2 electrical specifications at t a = +25c, +v in = 15vdc, and i out = 100ma unless otherwise noted. parameter conditions min typ max units input rated voltage 15 v dc voltage range 5 22 v dc input current i load = 0 40 ma i load = rated load 280 330 ma ripple current i load = 0 15 mapk i load = rated load 150 map-p isolation rated voltage 1000 v dc test voltage 60s, 60hz 3000 vpk resistance 10 g w capacitance 10 pf leakage current v iso = 240vac, 60hz 3 a output rated voltage 15 v dc voltage range i out = no load 15 20 v dc i out = rated load 14.25 15.75 v dc rated power 3 w rated current 100 ma total of all outputs 200 ma current range each output 0 150 ma total of all outputs 0 300 ma line regulation 10v dc v in 18v dc 1.15 v/v load regulation 0ma i load 100ma 15 mv/ma ripple voltage i load = 0 30 mvpk i load = rated load 150 mvpk temperature speci?cation C25 +85 c operating C40 +100 c absolute maximum ratings input voltage ......................................................................................22v dc output short-circuit duration ..................................................................xs internal power dissipation ..................................................................... 3w junction temperature ......................................................................+175c package thermal resistance ......................................................... 13c/w lead temperature (soldering, 10s) .................................................+300c ordering information pwr 72 /h device family pwr indicates dc/dc converter model number reliability screening no designator indicates standard manufacturing processing murata power solutions, inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. the descriptions contained her ein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. speci?cations are subject to chan ge without notice. ? 2009 murata power solutions, inc. usa: mans?eld (ma), tel: (508) 339 3000, email: sales@murata-ps.com canada: toronto, tel: (866) 740 1232, email: toronto@murata-ps.com uk: milton keynes, tel: +44 (0)1908 615232, email: mk@murata-ps.com france: montigny le bretonneux, tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com germany: mnchen, tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com japan: tokyo, tel: 3-3779-1031, email: sales_tokyo@murata-ps.com osaka, tel: 6-6354-2025, email: sales_osaka@murata-ps.com china: shanghai, tel: +86 215 027 3678, email: shanghai@murata-ps.com guangzhou, tel: +86 208 221 8066, email: guangzhou@murata-ps.com singapore: parkway centre, tel: +65 6348 9096, email: singapore@murata-ps.com murata power solutions, inc. 11 cabot boulevard, mans?eld, ma 02048-1151 u.s.a. tel: (508) 339-3000 (800) 233-2765 fax: (508) 339-6356 www.murata-ps.com email: sales@murata-ps.com iso 9001 & iso 14001 registered
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