bwr series 3 watt, dual output dc/dc converters mdc_bwr3w.b03 page 1 of 4 www.murata-ps.com www.murata-ps.com/support for full details go to www.murata-ps.com/rohs $ simplified schematic packaged in industry-standard dips, the 3 watt dual-output models of datels xwr series dc/dc converters are fully regulated (0.5% max. line, 1% max. load), fully isolated (1000vdc minimum), extremely ef? cient (as high as 78% guaranteed) building blocks providing true component-like ? exibility and convenience to designers of modern distributed power systems. exploiting high-frequency (170-200khz), ? yback topologies and contemporary, highly automated, smt assembly techniques, bwr model dc/dcs have enough room to include input (pi type) and output ? lters within their package. offering true "plug-and-play" convenience, these power converters require no external components. they operate over the full C25 to +75c tempera- ture range with no output power derating. output voltages are either 5, 12 or 15 volts. input voltage ranges are either 4.5-9v ("d5" models), 9-18v ("d12" models) or an ultra-wide 18-72v ("d48" models). transient response time is a quick 200sec. these extremely rugged modules are fully encap- sulated with a thermally conductive potting com- pound. they are moisture and vibration resistant and have established a reputation for outstanding mtbf. for telecommunication, computer and other emi-sensitive applications, these dip-packaged dc/dc converters offer full emi/emc characteriza- tion data. industry-standard pinouts make datels bwr model 3w dc/dcs ideal replacements for other more costly, less reliable power converters. simi- larly, they are excellent choices for new design-ins in systems demanding small size, low cost and high reliability. product overview features ?? low cost! ?? automated, smt-on-pcb construction ?? no external components required ?? 5, 12 or 15 volt outputs ?? choice of 3 input voltage ranges: ? 4.5-9 volts ? 9-18 volts ? 18-72 volts ?? 1.25" x 0.8" x 0.45" dip form factor ?? industry-standard package and pinout ?? fully isolated, 1000vdc guaranteed ?? guaranteed ef? ciencies to 78% ?? C25 to +75c operation with no derating ?? ul 1950, csa 22.2 no. 234 and iec 950 ?? emi/emc characterized ?? modi? cations and customs for oems typical topology is shown +v in ? v in +v out ?v out common reference & error amp opto isolation pwm controller
bwr series 3 watt, dual output dc/dc converters mdc_bwr3w.b03 page 2 of 4 www.murata-ps.com/support part number structure performance specifications and ordering guide ???? model output input ef? ciency package (case/ pinout) v out (volts) i out (ma, max.) r/n (mvp-p) ? regulation (max.) ? v in nom. (volts) range (volts) i in ? (ma) full load typ. max. line load min. typ. bwr-5/250-d12 5 250 75 120 0.5% 1.0% 12 9-18 35/278 75% 77% c1, p2 bwr-5/250-d48 5 250 75 120 0.5% 1.0% 48 18-72 10/76 75% 77% c1, p2 bwr-12/105-d5 12 105 75 150 0.5% 1.0% 5 4.5-9 75/727 70% 72% c1, p2 bwr-12/125-d12 12 125 75 150 0.5% 1.0% 12 9-18 35/346 73% 75% c1, p2 bwr-12/125-d48 12 125 75 150 0.5% 1.0% 48 18-72 10/81 78% 80% c1, p2 bwr-15/85-d5 15 85 75 150 0.5% 1.0% 5 4.5-9 100/736 70% 72% c1, p2 bwr-15/100-d12 15 100 75 150 0.5% 1.0% 12 9-18 35/346 73% 75% c1, p2 bwr-15/100-d48 15 100 75 150 0.5% 1.0% 48 18-72 10/81 78% 80% c1, p2 mechanical specifications all dimension in inches (mm) c rohs-6 compliant* - *contact murata power solutions technologies for availability pin 1 2 3 4 5 6 7 8 i/o connectiions function p2 +input +input ?input ?input common +output common ?output 0.020 0.002 dia. (0.508 0.051) 0.15 min (3.81) 0.45 (11.43) 1.25 (31.75) 0.200 (5.08) 0.10 (2.54) 0.80 (20.32) 0.600 (15.24) 0.100 (2.54) 0.18 (4.57) standoffs 0.025 (0.64) 0.600 (15.24) bottom view 1 2 34 5 6 8 7 plastic case with an insulated base case c1 ? typical at t a = +25c under nominal line voltage and full-load conditions unless otherwise noted. ? ripple/noise (r/n) measured over a 20mhz bandwidth. ? balanced loads, 10% to 100% load. ? nominal line voltage, no-load/full-load conditions. nominal output voltages: 5, 12 or 15 volts maximum output current in ma from each output input voltage range: d5 = 4.5-9 volts (5v nominal) d12 = 9-18 volts (12v nominal) d48 = 18-72 volts (48v nominal) wide range input output con guration: b = bipolar 15 b wr 100 d48 - / -
bwr series 3 watt, dual output dc/dc converters mdc_bwr3w.b03 page 3 of 4 www.murata-ps.com/support performance/functional speci? cations typical @ t a = +25c under nominal line voltage and full-load conditions unless noted. ? input voltage: "d5" models 12 volts "d12" models 20 volts "d48" models 80 volts input reverse-polarity protection current must be <2a. brief duration only. fusing recommended. output overvoltage protection none output current current limited. max. current and short-circuit duration are model dependent. "d12" and "d48" models can withstand sustained output short circuits. storage temperature ?40 to +100c lead temperature (soldering, 10 sec.) +300c input input voltage range: "d5" models 4.5-9 volts (5v nominal) "d12" models 9-18 volts (12v nominal) "d48" models 18-72 volts (48v nominal) input current see ordering guide input filter type ? pi reverse-polarity protection yes (instantaneous, 2a maximum) output v out accuracy (50% load) 1%, maximum temperature coef cient 0.02% per c ripple/noise (20mhz bw) ? see ordering guide line/load regulation see ordering guide ef ciency see ordering guide isolation voltage ? 1000vdc, minimum current limiting: "d5" models power-limiting technique, auto-recovery "d12" and "d48" models hiccup technique, auto-recovery dynamic characteristics transient response (50% load step) 200sec to 1% of ? nal value switching frequency: "d5" models 200khz "d12" and "d48" models 170khz environmental operating temperature ? (ambient, no derating) ?25 to +75c storage temperature ?40 to +100c physical dimensions 1.25" x 0.8" x 0.45" (31.8 x 20.3 x 11.4mm) case material diallyl phthalate, ul94v-0-rated pin material rohs: gold plate over copper alloy non rohs: tin plate over copper alloy weight 0.5 ounces (14.2 grams) ? these power converters require a minimum 10% loading to maintain speci? ed regulation. operation under no-load conditions will not damage these devices; however they may not meet all listed speci? cations. ? application-speci? c internal input/output ? ltering can be recommended and perhaps added internally upon request. contact datel applications engineering for details. ? devices can be screened or modi? ed for higher guaranteed isolation voltages. contact datel applications engineering for details. ? devices can be warranted or screened for lower-temperature operation. contact datel applications engineering for details. see datel's new bst 3w models for guaranteed operation to ?40c. these are stress ratings. exposure of devices to any of these conditions may adversely affect long-term reliability. proper operation under conditions other than those listed in the performance/functional speci? cations table is not implied. absolute maximum ratings technical notes floating outputs since these are isolated dc/dc converters, their outputs are "? oating." any bwr model may be con? gured to produce an output of 10v, 24v or 30v (for 5v, 12v or 15v models, respectively) by applying the load across the +output and ?output pins (pins 6 and 8), with either output grounded. the common (pins 5 and 7) should be left open. minimum 20% loading is recommended under these conditions. filtering and noise reduction all bwr 3 watt dc/dc converters achieve their rated ripple and noise speci? cations without the use of external input/output capacitors. in critical applications, input/output ripple and noise may be further reduced by install- ing electrolytic capacitors across the input terminals and/or low-esr tanta- lum or electrolytic capacitors across the output terminals. output capacitors should be connected between their respective output pin (pin 6 or 8) and common (pins 5 and 7) as shown in figure 2. the caps should be located as close to the power converters as possible. typical values are listed in the tables below. in many applications, using values greater than those listed will yield better results. to reduce input ripple "d5" models 47f, 15v "d12" models 10f, 35v "d48" models 4.7f, 100v to reduce output ripple 5v outputs 47f, 10v, low esr 12/15v outputs 22f, 20v, low esr in critical, space-sensitive applications, datel may be able to tailor the inter- nal input/output ? ltering of these units to meet your speci? c requirements. contact our applications engineering group for additional details.
bwr series 3 watt, dual output dc/dc converters mdc_bwr3w.b03 page 4 of 4 www.murata-ps.com/support 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 cha nge without notice. ? 2012 murata power solutions, inc. murata power solutions, inc. 11 cabot boulevard, mans? eld, ma 02048-1151 u.s.a. iso 9001 and 14001 registered this product is subject to the following operating requirements and the life and safety critical application sales policy : refer to: http://www.murata-ps.com/requirements/ if you?re designing with emc in mind, note that all of datel?s bwr 3 watt dc/dc converters have been characterized for radiated and conducted emissions in our new emi/emc laboratory. testing is conducted in an emco 5305 gtem test cell utilizing emco automated emc test software. radi- ated emissions are tested to the limits of fcc part 15, class b and cispr 22 (en 55022), class b. correlation to other speci? cations can be supplied upon request. radiated emissions plots to fcc and cispr 22 for model bwr-5/250-d12 appear below. published emc test reports are available for each model number. contact datel?s applications engineering department for more details. datel?s world-class design, development and manufacturing team stands ready to work with you to deliver the exact power converter you need for your demanding, large volume, oem applications. and ... we?ll do it on time and within budget! our experienced applications and design staffs; quick-turn prototype capability; highly automated, smt assembly facilities; and in-line spc qual- ity-control techniques combine to give us the unique ability to design and deliver any quantity of power converters to the highest standards of quality and reliability. we have compiled a large library of dc/dc designs that are currently used in a variety of telecom, medical, computer, railway, aerospace and industrial applications. we may already have the converter you need. contact us. our goal is to provide you the highest-quality, most cost-effec- tive power converters available. emi radiated emissions custom capabilities 80 70 60 50 40 30 20 10 0 ?10 ?20 frequency (mhz) 100 1000 radiated emissions fcc class b limit bwr-5/250-d12 radiated emissions fcc part 15 class b, 3 meters converter output = 5vdc @ 203ma radiated emissions (dbv/m) bwr-5/250-d12 radiated emissions en 55022 class b, 10 meters converter output = 5vdc @ 203ma 80 70 60 50 40 30 20 10 0 ?10 ?20 fre q uenc y ( mhz ) 100 1000 radiated emissions en 55022 class b limit radiated emissions (dbv/m) input fusing certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. for datel bwr 3 watt dc/dc converters, you should use slow-blow type fuses with values no greater than the following: v in range fuse value "d5" 1.5a "d12" 1a "d48" 0.5a figure 2. using external capacitors to reduce input/output ripple/noise 1, 2 3, 4 6 8 5, 7 c in c out c out + + + ?output +input ?input +output common
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