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figure 1. simpli ed schematic common (6) +v in (1) Cv in (2) pwm controller opto isolation reference & error amp comparators uvlo & ovlo on/off control (3) (optional) trim (5) (optional) +v out (4) switch control typical topology is shown. typical units features ? ? 1.2-2.5v out models source 6 amps ? ? 3.3v out models source 4.25 amps ? ? 5/12/15v out models deliver full 15 watts ? ? synchronous-recti? er topologies ? ? guaranteed ef? ciencies to 88% ? ? choice of 3 input voltage ranges: 10-18v, 18-36v, 36-75v ? ? C40 to +60/70 ? c ambient w/o derating ? fully isolated (1500vdc); i/o protected ? ? meets ul/ie/en60950-1 certi? cation, 2nd edition ? ? ce mark (75v in models) ? ? standard 1" x 2" packages and pinouts ? ? optional v out trim and on/off control the new 1.2, 1.5v, 1.8v and 2.5v models in murata power solutions ? agship 7-15 watt a-series can source a continuous 6 amps. this is the most "low-voltage" current available from a standard 1" x 2" package, and these power converters exemplify murata power solutions relentless drive to bring you more power/current, from standard packages, without compromising reliability or resorting to thermal specmanship. by combining a high-frequency, high-ef? ciency (to 88%), synchronous-recti? er topology with the newest components and time-tested, fully automated, smt-on-pcb construction, these uwr models are able to bring you 7-15w (@ up to 6a) in the standard 1" x 2" package from which most competitors can only get 5-10w (@ 3-4a). all uwrs deliver their full output power over ambient temperature ranges from C40c to as high as +70c (model and input voltage dependent) without heat sinks or supplemental forced-air cooling. devices derate to +100c. output voltages are 1.2, 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 volts. input voltage ranges are 10-18v (d12 models), 18-36v (d24 models) or 36-75v (d48 models). all models feature input pi ? lters, input undervoltage and overvoltage lockout, input reverse-polarity protection, output overvoltage protection, output current limiting, and continuous short-circuit protection. on/off control and output- trim functions are optional (see optional functions). all models are designed to meet iec950, ul1950 and en60950-1, 2nd edition safety requirements. d48?models (36-75v inputs) are ce marked. uwr 7-15w dc/dcs are packaged in low- cost, light-weight, diallyl phthalate (ul94v-0 rated) plastic packages with standoffs. emc compliance is achieved via a low-noise design rather than through expensive metal shielding. product overview t yp i ca l un i t s fe at ur es t h e m u a- s is t a s co n pr www.murata-ps.com www.murata-ps.com/support for full details go to www.murata-ps.com/rohs $ uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 1 of 12
performance speci cations and ordering guide ? ? typical at t a = +25c under nominal line voltage and full-load conditions, unless otherwise noted. ? ripple/noise (r/n) is tested/speciifed over a 20mhz bandwidth. all models are speci? ed with two external 0.47f multi-layer ceramic capacitors located 2-3 inches from the module being tested. ? load regulation is speci? ed over 10%-100% load conditions. 1.5-5v models are stable and regulate under no-load conditions. 12/15v models have minimum loading requirements see performance/functional speci? cations. ? nominal line voltage, no-load/full-load conditions. ? see page 12 . ? special trim version. see trim equations, page 5. quantity order required. ? please refer to the part number structure for additional options when ordering. *pins 3 and 5 are optional. see optional functions and technical notes for details. standard pin length is shown. please refer to the part number structure for special order pin lengths. pin function p22 pin function p22 1 +vin 4 +vout 2 ?vin 5 trim* 3 on/off control* 6 common i/o connections for part number structure, please see page 12 . mechanical specifications third angle projection dimensions are in inches (mm) shown for ref. only. components are shown for reference only. tolerances (unless otherwise speci?ed): .xx 0.02 (0.5) .xxx 0.010 (0.25) angles 2? .475 12.07 .020 standoff (4 places) 1.00 25.4 end view side view plastic case .20 min min 2.00 50.8 5.1 6x .040.002 1.020.05 6 5 4 3 1 2 bottom view 20.32 7.62 10.16 12.70 .800 .800 2.5 .500 20.32 .400 .10 .300 .60 15.2 ordering guide root model ? output input ef? ciency package (case, pinout) vout (volts) iout (ma) r/n (mv p-p) ? regulation (max.) vin nom. (volts) range (volts) iin (ma) ? typ. max. line load ? min. typ. uwr-1.2/6000-d12a-c 1.2 6000 40 75 0.2% 0.5% 12 10-18 80/769 76% 78% c14, p22 uwr-1.2/6000-d24a-c 1.2 6000 40 75 0.05% 0.75% 24 18-36 45/375 78% 80% c14, p22 uwr-1.2/6000-d48a-c 1.2 6000 40 75 0.2% 0.5% 48 36-75 80/188 78% 80% c14, p22 uwr-1.5/6000-d12a-c 1.5 6000 30 55 0.1% 0.5% 12 10-18 75/914 77.5% 79.5% c14, p22 uwr-1.5/6000-d24a-c 1.5 6000 30 55 0.1% 0.5% 24 18-36 40/454 78% 80% c14, p22 uwr-1.5/6000-d48a-c 1.5 6000 30 55 0.1% 0.5% 48 36-75 25/226 78.5% 80.5% c14, p22 uwr-1.8/6000-d12a-c 1.8 6000 30 55 0.1% 0.5% 12 10-18 70/1084 81% 83% c14, p22 uwr-1.8/6000-d24a-c 1.8 6000 30 55 0.1% 0.5% 24 18-36 35/539 82.5% 84.5% c14, p22 uwr-1.8/6000-d48a-c 1.8 6000 30 55 0.1% 0.5% 48 36-75 25/268 83% 85% c14, p22 uwr-2.5/6000-d12a-c 2.5 6000 30 55 0.1% 0.5% 12 10-18 80/1489 83% 86% c14, p22 uwr-2.5/6000-d24a-c 2.5 6000 30 50 0.075% 0.25% 24 18-36 45/727 84.75% 86% c14, p22 uwr-2.5/6000-d48a-c 2.5 6000 30 55 0.1% 0.5% 48 36-75 25/367 84% 86% c14, p22 uwr-3.3/4250-d12a-c 3.3 4250 85 100 0.2% 0.5% 12 10-18 80/1375 83% 86% c14, p22 uwr-3.3/4250-d24a-c 3.3 4250 45 70 0.2% 0.5% 24 18-36 45/672 85% 87% c14, p22 uwr-3.3/4250-d48a-c 3.3 4250 85 100 0.2% 0.5% 48 36-75 35/336 85% 87% c14, p22 uwr-3.3/4500-d48ant-c ? 3.3 4500 85 100 0.2% 0.5% 48 36-75 35/356 85% 87% c14, p22 uwr-5/3000-d12a-c 5 3000 85 100 0.2% 0.3% 12 10-18 110/1471 83% 85% c14, p22 uwr-5/3000-d24a-c 5 3000 85 100 0.2% 0.3% 24 18-36 55/710 85.5% 88% c14, p22 uwr-5/3000-d48a-c 5 3000 85 100 0.2% 0.3% 48 36-75 35/355 85.5% 88% c14, p22 uwr-5/3000-d48anst-c ? 5 3000 85 100 0.2% 0.3% 48 36-75 35/355 85.5% 88% c14, p22 uwr-12/1250-d12a-c 12 1250 85 100 0.2% 0.3% 12 10-18 45/1471 82.5% 85% c14, p22 uwr-12/1250-d24a-c 12 1250 85 100 0.2% 0.3% 24 18-36 45/718 85% 87% c14, p22 uwr-12/1250-d48a-c 12 1250 85 100 0.2% 0.3% 48 36-75 20/359 85% 87% c14, p22 uwr-15/1000-d12a-c 15 1000 85 100 0.2% 0.3% 12 10-18 45/1471 82.5% 85% c14, p22 uwr-15/1000-d24a-c 15 1000 85 100 0.2% 0.3% 24 18-36 45/718 85% 87% c14, p22 uwr-15/1000-d48a-c 15 1000 85 100 0.2% 0.3% 48 36-75 20/359 85% 87% c14, p22 www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 2 of 12 obsolete obsolete obsolete obsolete obsolete obsolete obsolete obsolete obsolete obsolete obsolete obsolete
dynamic characteristics (continued) switching frequency 1.2v models 250-300khz 30khz, model dependent 1.5v d48 models 260khz (30khz) 1.8v d12 models 280khz (30khz) 1.8v d24 models 250khz (30khz) 1.8v d48 models 210khz (20khz) 2.5 and 1.5 d12/d24 models 340khz (40khz) 3.3-12v models 310-345khz 10%, model dependent environmental operating temperature (ambient): ?40 to +85c with derating (see derating curves) case temperature: maximum allowable +100c storage temperature ?40 to +105c physical dimensions 2" x 1" x 0.475" (51 x 25 x 12.1mm) shielding none case material diallyl phthalate, ul94v-0 rated pin material gold-plated copper alloy with nickel underplate weight 1.4 ounces (39.7 grams) ? all models are speci? ed with two external 0.47f multi-layer ceramic capacitors installed across their output pins. ? see minimum output loading requirements under technical notes. ? see technical notes for details. ? the on/off control and trim functions are optional and must be installed by mps. see optional functions or contact mps for details. ? the on/off control is designed to be driven with open-collector logic or the application of appro- priate voltages (referenced to ?input, pin 2). applying a voltage to the on/off control pin when no input voltage is applied to the converter may cause permanent damage. see technical notes. ? output noise maybe further reduced with the addition of additional external output capacitors. see technical notes. ? operating temperature range without derating is model and input-voltage dependent. see temperature derating. ? rohs-6 hazardous substance compliance does not claim eu rohs exemption 7b (lead in solder). performance/functional speci cations typical @ t a = +25c under nominal line voltage and full-load conditions, unless noted. ?? these are stress ratings. exposure of devices to greater than 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. input voltage: continuous: d12 models 22 volts d24 models 44 volts d48 models 88 volts transient (100msec): d12 models 50 volts d24 models 50 volts d48 models 100 volts input reverse-polarity protection current must be <10 amps. brief duration only. fusing recommended. output overvoltage protection: 1.2v/1.5/1.8v outputs 2.1/2.2/2.3 volts, unlimited duration 2.5v/3.3v outputs tbd/3.4/4.4 volts, unlimited duration 5v/12v/15v outputs 7.1/16/18 volts, unlimited duration output current current limited. devices can withstand sus- tained output short circuits without damage. case temperature +100c storage temperature ?40 to +105c lead temperature see soldering guidelines absolute maximum ratings input input voltage range: d12a models 10-18 volts (12v nominal) d24a models 18-36 volts (24v nominal) d48a models 36-75 volts (48v nominal) overvoltage shutdown: d12a models 18.5-21 volts (20v typical) d24a models 37-41 volts (38v typical) d48a models 77-81 volts (78.5v typical) start-up threshold: ? d12a models 9.4-10 volts (9.6v typical) d24a models 16.5-18 volts (17v typical) d48a models 34-36 volts (35v typical) undervoltage shutdown: ? d12a models 7-8.5 volts (8v typical) d24a models 15.5-17.5 volts (16.5v typical) d48a models 32.5-35.5 volts (34v typical) input current: normal operating conditions see ordering guide standby mode (off, ov, uv) 5ma input filter type pi reverse-polarity protection brief duration, 10a maximum on/off control (optional, pin 3): ? ? d12ac, d24ac, & d48a c models on = open or 13v to +v in , i in = 1-5ma typ. off = 0-0.8v, i in = 3-12ma typ. d12an, d24an, & d48an models on = 0-0.8v, i in = 3-12ma typ. off = open or 3.3-5.5v, i in = 1-5ma typ. output v out accuracy (50% load): 1.5% (2% for model uwr-1.2/6000) minimum loading for speci cation: ? 1.2v/1.5v/1.8v/2.5v/3.3v/5v outputs no load 12v/15v outputs 10% of i out max. minimum loading for stability: ? 1.2v/1.5v/1.8v/2.5v/3.3v/5v outputs no load 12v/15v outputs 25ma ripple/noise (20mhz bw) ? ? see ordering guide line/load regulation see ordering guide ef ciency see ordering guide isolation voltage: input-to-output 1500vdc minimum (functional) isolation capacitance 470pf isolation resistance 100m ? current limiting: 1.2v-5v outputs hiccup technique, auto-recovery 12v and 15v outputs power-limiting technique, auto-recovery overvoltage protection zener/transorb clamp, magnetic feedback temperature coef cient 0.04% per c dynamic characteristics transient response (50% load step) 1.2v-2.5v models 200sec max. to 2% of ? nal value 3.3v-15v models 200sec max. to 1.5% of ? nal value start-up time: ? v in to v out 50msec on/off to v out 30msec www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 3 of 12
red camera is a another alternative which avoids the tc heatsinking effect. but the ir camera must be calibrated frequently and accurately. remember too that it is quite dif? cult to accurately measure air? ow right at the converter. murata power solutions uses a calibrated wind tunnel with large amounts of data history. because of thermal time constants, allow plenty of time for temperature stabilization. trimming output voltages these converters have a trim capability (pin 5) that allows users to adjust the output voltage 5%. adjustments to the output voltage can be accomplished via a trim pot, figure 2, or a single ? xed resistor as shown in figures 3 and 4. a single ? xed resistor can increase or decrease the output voltage depend- ing on its connection. fixed resistors should have an absolute tcr less than 100ppm/c to minimize sensitivity to changes in temperature. a single resistor connected from the trim (pin 5) to the +output (pin 4), see figure 3, will decrease the output voltage. a resistor connected from the trim (pin 5) to output common (pin 6) will increase the output voltage. trim adjustment greater than 5% can have an adverse effect on the con- verter's performance and is not recommended. 20k 5-22 tu r n s +vin +vout common trim Cvin on/off control 1 2 3 4 5 load 6 +vin +vout common trim Cvin on/off control 1 2 3 4 5 load 6 r trim down +vin +vout common trim Cvin on/off control 1 2 3 4 5 load 6 r trim up figure 2. trim connections using a trim pot figure 4. trim connections to increase output voltage using fixed resistors figure 3. trim connections to decrease output voltage using fixed resistors floating outputs since these are isolated dc/dc converters, their outputs are "? oating." designers will usually use the output common (pin 6) as the ground/return of the load circuit. you can, however, use the +output (pin 4) as ground/return to effectively reverse the output polarity. minimum output loading requirements 1.2 to 5v models employ a synchronous-recti? er design topology. all models regulate within spec and are stable under no-load conditions. 12/15v models employ a traditional forward architecture and require 10% loading (125ma for 12v models, 100ma for 15v models) to achieve their listed regulation specs. 12/15v models also have a minimum-load-for-stability requirement (20ma). for 12/15v models, operation below 20ma or 10% loading will be stable but regulation may degrade. a 100f output capacitor is recommended below 10% loading. users should verify whether this relaxed regulation will have any effect on output circuits. if so, add a small load of 10% or greater. operation under no-load conditions will not damage 12/15v converters. however they may not meet all listed speci? cations. filtering and noise reduction all a-series uwr dc/dc converters achieve their rated ripple and noise speci? cations using the external input and output capacitors speci? ed in the performance/functional speci? cations table. in critical applications, input/ output noise may be further reduced by installing additional external i/o caps. input capacitors should be selected for bulk capacitance, low esr and high rms-ripple-current ratings. output capacitors should be selected for low esr and appropriate frequency response. all caps should have appropriate voltage ratings and be mounted 2-3 inches from the converter to achieve published ra tings. the most effective combination of external i/o capacitors will be a function of your particular load and layout conditions. input fusing certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. fuses should also be used if the possibility of sustained, non-current-limited, input-voltage polarity reversals exists. for mps's a-series uwr 7-15 watt dc/dc converters, you should use fast-blow type fuses with values no greater than the following. v in range fuse value "d12a" models 3 amps "d24a" models 2 amps "d48a" models 1 amp maximum case temperature the +100 degree c. maximum outside case temperature speci? cation is based on much empirical testing on encapsulated units. those tests show that if the case exterior can be maintained at or below +100c., the hottest internal components package temperatures will not exceed +128c. because of the internal temperature gradient to the exterior case. this latter +128c. internal ? gure is a safety margin offering more protection for the internal components. the +100c. case speci? cation must be achieved by the users combination of lower output current and/or higher air? ow. if you attempt any of your own case temperature testing, please be aware of the heatsinking effect of attaching wired thermocouples to surfaces. an infra- www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 4 of 12
C 16.9 down r t (k 7 ) = 3.3 C v o 2.49(v o C 1.27) C 16.9 up r t (k 7 ) = v o C 3.3 3.16 C 2 down r t (k 7 ) = 1.5 C v o 1.6(v o C 1.23) C 2 up r t (k 7 ) = v o C 1.5 1.968 C 2.49 down r t (k 7 ) = 1.8 C v o 0.995(v o C 1.24) C 2.49 up r t (k 7 ) = v o C 1.8 1.23 C 11 down r t (k 7 ) = 2.5 C v o 2(v o C 1.24) C 11 up r t (k 7 ) = v o C 2.5 2.48 C 2 down r t (k 7 ) = 1.2 C v o 5.32(v o C 0.7) C 2 up r t (k 7 ) = v o C 1.2 3.73 C 15 down r t (k 7 ) = 5 C v o 2.49(v o C 2.527) C 15 up r t (k 7 ) = v o C 5 6.292 C 49.9 down r t (k 7 ) = 12 C v o 6.34(v o C 5.714) C 49.9 up r t (k 7 ) = v o C 12 36.23 down r t (k 7 ) = 5.0 C v o 7.5(v o C 1.24) C 10 up r t (k 7 ) = v o C 4.997 9.3 C 63.4 down r t (k 7 ) = 15 C v o 7.87(v o C 7.136) C 63.4 up r t (k 7 ) = v o C 15 56.16 C 8.25 where k = down r t (k 7 ) = k 1.27 uwr-3.3/4500-d48ant up r t (k 7 ) = 3.3 C v o 3.3 where k = v o C 3.3 3.3 C 6.2 k 0.78 model trim equation model trim equation uwr-5/3000-d48anst uwr-12/1250-d12a uwr-12/1250-d24a uwr-12/1250-d48a uwr-15/1000-d12a uwr-15/1000-d24a uwr-15/1000-d48a uwr-5/3000-d12a uwr-5/3000-d24a uwr-5/3000-d48a uwr-3.3/4250-d12a uwr-3.3/4250-d24a uwr-3.3/4250-d48a uwr-1.5/6000-d12a uwr-1.5/6000-d24a uwr-1.5/6000-d48a uwr-1.8/6000-d12a uwr-1.8/6000-d24a uwr-1.8/6000-d48a uwr-2.5/6000-d12a uwr-2.5/6000-d24a uwr-2.5/6000-d48a uwr-1.2/6000-d12a uwr-1.2/6000-d24a uwr-1.2/6000-d48a start-up threshold and undervoltage shutdown under normal start-up conditions, devices will not begin to regulate until the ramping-up input voltage exceeds the start-up threshold voltage (35v for "d48a" models). once operating, devices will not turn off until the input volt- age drops below the undervoltage shutdown/lockout limit (34v for "d48a" models). subsequent re-start will not occur until the input is brought back up to the start-up threshold. this built-in hysteresis obviously avoids any indetermi- nate on/off situations at a single voltage. start-up time the v in to v out start-up time is the interval between the time at which a ramp- ing input voltage crosses the turn-on threshold point and the fully-loaded output voltage enters and remains within its speci? ed accuracy band. actual measured times will vary with input source impedance, external input capacitance, and the slew rate and ? nal value of the input voltage as it appears to the converter. the on/off to v out start-up time assumes the converter is turned off via the on/off control with the nominal input voltage already applied to the converter. the speci? cation de? nes the interval between the time at which the converter is turned on and the fully-loaded output voltage enters and remains within its speci? ed accuracy band. accuracy of adjustment is subject to tolerances or resistor values and factory-adjusted output accuracy. v o = desired output voltage. soldering guidelines murata power solutions recommends the speci? cations below when install- ing these converters. these speci? cations vary depending on the solder type. exceeding these speci? cations may cause damage to the product. be cautious when there is high atmospheric humidity. your production environment may differ; therefore please thoroughly review these guidelines with your process engineers. wave solder operations for through-hole mounted products (thmt) for sn/ag/cu based solders: maximum preheat temperature 115 c. maximum pot temperature 270 c. maximum solder dwell time 7 seconds for sn/pb based solders: maximum preheat temperature 105 c. maximum pot temperature 250 c. maximum solder dwell time 6 seconds www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 5 of 12
temperature derating curves for uwr 7-15w a-series output power (watts) ambient temperature ( c) d24a and d48a temperature derating for 1.5v output models 10 9 8 7 6 5 4 3 2 1 0 C400 404550556065707580859095100 v in = 18v-27v (d24a) v in = 36v-48v (d48a) v in = 18v-30v (d24a) v in = 36v-60v (d48a) v in = 18v-36v (d24a) v in = 36v-75v (d48a) output power (watts) ambient temperature ( c) d24a and d48a temperature derating for 1.8v output models 12 11 10 9 8 7 6 5 4 3 2 1 0 C400 404550556065707580859095100 v in = 18v-27v (d24a) v in = 36v-48v (d48a) v in = 18v-30v (d24a) v in = 36v-60v (d48a) v in = 18v-36v (d24a) v in = 36v-75v (d48a) output power (watts) ambient temperature ( c) 15.0 13.5 12.0 10.5 9.0 7.5 6.0 4.5 3 1.5 0 C400 404550556065707580859095100 v out = 2.5v, 5v, 12v and 15v v out = 3.3v v out = 1.8v v out = 1.5v v out = 1.2v d12a (10-18v) temperature derating output power (watts) ambient temperature ( c) d24a and d48a temperature derating for 3.3v output models 14 12 10 8 6 4 2 0 C400 404550556065707580859095100 v in = 18v-27v (d24a) v in = 36v-48v (d48a) v in = 18v-30v (d24a) v in = 36v-60v (d48a) v in = 18v-36v (d24a) v in = 36v-75v (d48a) output power (watts) ambient temperature ( c) 15.0 13.5 12.0 10.5 9.0 7.5 6.0 4.5 3 1.5 0 C400 404550556065707580859095100 v in = 18v-27v (d24a) v in = 36v-48v (d48a) v in = 18v-30v (d24a) v in = 36v-60v (d48a) v in = 18v-36v (d24a) v in = 36v-75v (d48a) d24a and d48a temperature derating for 2.5/5/12 /15v output models the thermal performance of a-series uwr 7-15 watt dc/dc converters is depicted in the derating curves shown below. all devices, when operated at full load, in still ambient air, over their full speci? ed input voltage range, can safely operate to t a maximum. all models, other than the d12a models (10-18 volt input range), can operate at higher ambient temperatures if the input range is narrowed. for example, model uwr-5/3000-d48a can operate safely to +70c if the input range is kept between 36 and 48 volts. www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 6 of 12
9 0 85 80 75 70 65 60 55 50 45 load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-1.8/6000-d12a efficiency vs. line and load 9 0 85 80 75 70 65 60 55 50 45 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-1.8/6000-d48a efficiency vs. line and load 9 0 85 80 75 70 65 60 55 50 45 load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-1.8/6000-d24a efficiency vs. line and load 85 80 75 70 65 60 55 50 45 40 35 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-1.5/6000-d48a efficiency vs. line and load 85 80 75 70 65 60 55 50 45 40 35 load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-1.5/6000-d24a efficiency vs. line and load 85 80 75 70 65 60 55 50 45 40 35 load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-1.5/6000-d12a efficiency vs. line and load typical performance curves for uwr 7-15w a-series www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 7 of 12
90 85 80 75 70 65 60 55 50 45 uwr-3.3/4250-d12a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3 90 85 80 75 70 65 60 55 50 45 uwr-3.3/4250-d24a efficiency vs. line and load load current ( am p s ) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3 90 85 80 75 70 65 60 55 50 45 uwr-3.3/4250-d48a efficiency vs. line and load 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 9 0 85 80 75 70 65 60 55 50 45 load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-2.5/6000-d24a efficiency vs. line and load 9 0 85 80 75 70 65 60 55 50 45 load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-2.5/6000-d12a efficiency vs. line and load 9 0 85 80 75 70 65 60 55 50 45 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 uwr-2.5/6000-d48a efficiency vs. line and load typical performance curves for uwr 7-15w a-series www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 8 of 12
90 85 80 75 70 65 60 55 50 45 40 uwr-5/3000-d12a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3 90 85 80 75 70 65 60 55 50 45 40 uwr-5/3000-d24a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3 90 85 80 75 70 65 60 55 50 45 40 uwr-5/3000-d48a efficiency vs. line and load 0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 90 85 80 75 70 65 60 55 50 uwr-12/1250-d12a efficiency vs. line and load load current ( am p s ) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3 90 85 80 75 70 65 60 55 50 uwr-12/1250-d24a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3 ,oad#urrent!mps %fficiency 6 ). 6 6 ). 6 6 ). 6 572 $!.4%fficiencyvs,ineand,oad typical performance curves for uwr 7-15w a-series www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 9 of 12
90 85 80 75 70 65 60 55 uwr-15/1000-d12a efficiency vs. line and load 0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1 load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 90 85 80 75 70 65 60 55 uwr-15/1000-d24a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1 90 85 80 75 70 65 60 55 uwr-15/1000-d48a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1 output ripple and noise (pard) (v in = nominal, v out = 1.8v @ 6a, two external 0.47f output capacitors.) 20mv, 1sec/div, 20mhz bw output ripple and noise (pard) (v in = nominal, v out = 1.5v @ 6a, two external 0.47f output capacitors.) 20mv, 1sec/div, 20mhz bw 90 85 80 75 70 65 60 55 50 uwr-12/1250-d48a efficiency vs. line and load 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v typical performance curves for uwr 7-15w a-series www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 10 of 12
20mv, 1sec/div, 20mhz bw output ripple and noise (pard) (v in = nominal, v out = 12v @ 1.25a, two ext. 0.47f output capacitors.) output ripple and noise (pard) (v in = nominal, v out = 15v @ 1a, two external 0.47f output capacitors.) 20mv, 2.5sec/div, 20mhz bw 20mv, 1sec/div, 20mhz bw output ripple and noise (pard) (v in = nominal, v out = 3.3v @ 4.25a, two ext. 0.47f output capacitors.) 20mv, 1sec/div, 20mhz bw output ripple and noise (pard) (v in = nominal, v out = 5v @ 3a, two external 0.47f output capacitors.) output ripple and noise (pard) (v in = nominal, v out = 2.5v @ 6a, two external 0.47f output capacitors.) 20mv, 1sec/div, 20mhz bw typical performance curves for uwr 7-15w a-series www.murata-ps.com/support uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 11 of 12
optional functions the a-series 7-15w dc/dc converters offer numerous electrical/ mechanical options. per the ordering guide on page 2, the trailing "a" (a-series) in each part number pertains to the base part number. part-number suf? xes are added after the "a," indicating the selection of standard options. the resulting part number is a "standard product" and is available to any customer desiring that particular combination of options. as described below, selecting certain options will result in the installation of additional pins in certain locations. suf x description blank no v out trim or on/off control functions added (no i/o pins installed in the pin 3 and pin 5 positions). the pin length remains at 0.2?inches (5.08 mm). t add a v out trim function on pin 5. no pin 3 installed. c add an on/off control function on pin 3 (with positive polarity). no pin 5 installed. ct add the on/off control function (with positive polarity) on pin 3 and add the v out trim function on pin 5. n add an on/off control function on pin 3 with negative polarity. no pin 5 installed. nt add the on/off control function with negative polarity on pin 3 and add the v out trim function on pin 5. l1 trim the pin length to 0.110 0.010 inches (2.79 0.25mm). this option requires a minimum order quantity. l2 trim the pin length to 0.145 0.010 inches (3.68 0.25mm). this option requires a minimum order quantity. -c rohs-6 hazardous substance compliance (does not claim eu rohs exemption 7b, lead in solder). * note: usage of consecutive "c" and "-c" designations is correct for some models. example: uwr-5/3000-d48ac-c adaptations there are various additional con? gurations available on a-series 7-15w dc/dcs. because designating each of them with a standard part-number suf? x would result in an unmanageable matrix of part numbers, such are designated by mps and assigned 5-digit "part-number suf? xes. uwr-3.3/4250-d48at-30690 standard product, 48v in , 3.3v out /4.25a with a v out trim function added in the pin 3 position, with adapted current limit set point to 6.5a min. and with removed input overvoltage shutdown function. uwr-5/3000-d48act-30770 uwr-5/3000-d48act-30770-y (rohs-5) standard product, 48v in , 5v out /3a. on/off control function (positive polarity) on?pin 3, v out, trim function added on pin 5. adaptations: trim equations are tyco/lucent-compatible. transformer isolation system has been enhanced to meet the basic insulation requirements of ul60950-1/en60950-1. i/o pins are 25-mil-square tyco/lucent compatible. shielded metal case is connected to +v in pin 1. input overvoltage shutdown function has been removed. uwr-3.3/4500-d48ant standard uwr-3.3/4250-d48a, 48v in , 3.3v out with slightly higher output current (4.5a), negative on/off polarity control and a special competitive- compatible trim. uwr-3.3/4500-d48ant accepts trim adjustments to 10% of nominal v out not to exceed 15w of maximum output power. users should carefully consider the amount of trim added since excessive positive trim may exceed the overvoltage protection. excessive negative trim may interfere with proper regulation. uwr-3.3/4500-d48anst special trim version. see page 5 . uwr-5/3000-d48ansthl2-y uwr-3.3/4500-d48anthl2-y negative on/off polarity, special trim, conformal coating added, 3.68mm pin length, rohs-5 compliance (with lead). rohs-5 compliance requires a sched- uled quantity order. not all rohs-5 -y models are available. please contact product marketing for further information. wide range input output con guration: u = unipolar nominal output voltage: 1.2, 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 volts maximum output current in ma input voltage range: d12 = 10-18 volts (12v nominal) d24 = 18-36 volts (24v nominal) d48 = 36-75 volts (48v nominal) u wr 3000 -/ d48 a - 5 ct a-series high reliability optional functions lx *note: not all model number combinations may be available. contact mps. c - rohs-6 compliant* part number structure 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/ uwr models single output, high-density, 6 amp/15 watt dc/dc converters mdc_uwr_7-15.g04 page 12 of 12

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