uce series isolated, high-density, eighth-brick 100w dc/dc converters for full details go to www.murata-ps.com/rohs www.murata-ps.com technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 mdc_uce.a12 page 1 of 10 +v in (2) (8) (3) (1) (7) ?v in opto isolation reference & error amp pulse transformer input undervoltage, input overvoltage, and output overvoltage comparators remote on/off control +v out (4) ?v out (6) v out trim +sense (5) ?sense switch control pwm controller features n rohs compliant n industry standard eighth-brick pinout and package n outputs from 1.5v to 12v up to 100w n low profle 0.4" height with 0.9" x 2.3" outline dimensions n 36 to 75 vdc input range (48v nominal) n fully isolated, 2250 vdc (basic) insulation n outstanding thermal performance and derating n extensive self-protection and short circuit features with no output reverse conduction n on/off control, trim and sense functions n interleaved synchronous rectifcation yields high effciency over 90% n fully protected against temperature and voltage limits n designed to meet ul/en/iec 60950-1 and can/csa c22.2 no. 60950-1 safety approvals units are offered with fxed output voltages from 1.5 to 12 volts and currents up to 40 amps. uces operate over a wide temperature range (up to +85 degrees celsius at moderate airfow) with full rated power. interleaved synchronous rectifer topology yields excellent effciency over 90% and no reverse output conduction. uces achieve these impressive mechanical and environmental specs while delivering excellent electrical performance in a through-hole package. overall noise is typically 50 mv pk-pk (low voltage models) with fast step response. these converters offer tight output regulation and high stability even with no load. the unit is fully protected against input undervoltage, output overcurrent and short circuit. an on-board temperature sensor shuts down the converter if thermal limits are reached. hiccup output protection automatically restarts the converter when the fault is removed. a convenient remote on/off control input enables phased startup and shutdown in multi-voltage ap - plications. to compensate for longer wiring and to retain output voltage accuracy at the load, uces em - ploy a sense input to dynamically correct for ohmic losses. a trim input may be connected to a users adjustment potentiometer or trim resistors for output voltage calibration. the uce will tolerate substantial capacitive loading for bypass-cap applications. uces include industry-standard safety certifca - tions and basic i/o insulation provides input/output isolation to 2250v. radiation emission testing is performed to widely-accepted emc standards. product overview typical unit typical topology is shown. simplified block diagram for effcient, fully isolated dc power in the smallest space, the uce open frame dc/dc converter series ft in industry-standard eighth brick outline dimensions and mounting pins (on quarter-brick pinout). $
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com mdc_uce.a12 page 2 of 10 part number structure maximum rated output current in amps eighth-brick package output confguration: u = unipolar/single nominal output voltage u ce - / d48 - 3.3 30 n b input voltage range: d48 = 36-75v, 48v nominal c - h performance specifications and ordering guide model family output input effciency package v out (v) i out (a) power (w) ripple & noise (mvp-p) regulation v in nom. (v) range (v) i in, no load (ma) i in, full load (a) typ. max. line load min. typ. case pinout uce-1.2/40-d48n-c 1.2 40 48 please contact murata power solutions for further information. uce-1.5/20-d48n-c 1.5 20 30 50 100 0.15% 0.3% 48 36-75 50 0.72 85% 87% c56 p32 uce-1.5/40-d48n-c 1.5 40 60 please contact murata power solutions for further information. uce-1.8/30-d48n-c 1.8 30 54 30 80 0.125% 0.25% 48 36-75 45 1.28 87% 88% c56 p32 uce-2.5/20-d48n-c 2.5 20 50 50 80 0.125% 0.25% 50 1.14 88% 91% uce-2.5/40-d48n-c 2.5 40 100 please contact murata power solutions for further information. uce-3.3/15-d48n-c 3.3 15 49.5 50 100 0.125% 0.25% 48 36-75 60 1.15 86% 90% c56 p32 uce-3.3/30-d48n-c 3.3 30 99 0.1% 0.2% 2.27 89% 91% uce-5/10-d48n-c 5 10 50 50 100 0.125% 0.25% 30 1.15 88% 90.5% uce-5/20-d48n-c 5 20 100 please contact murata power solutions for further information. uce-12/4.2-d48n-c 12 4.2 50.4 150 300 0.125% 0.25% 48 36-75 50 1.14 86% 92% c56 p32 uce-12/8.3-d48n-c 12 8.3 99.6 200 2.31 90% ? please refer to the model number structure for additional ordering part numbers and options . conformal coating (optional) blank = no coating, standard h = coating added, optional, special quantity order rohs hazardous materials compliance c = rohs-6 (no lead), standard y = rohs-5 (with lead), optional, special quantity order note: some model combinations may not be available. contact murata power solutions for availability. on/off control polarity n = negative polarity , standard p = positive polarity , optional baseplate (optional, not available on some models) blank = no baseplate , standard b = baseplate installed , optional, special quantity order
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com mdc_uce.a12 page 3 of 10 input characteristics model family v i n (volts) nominal start-up threshold min. (a) under- voltage shut- down (v) reflected (back) ripple current (ma) internal input filter type reverse polarity protection remote on/off control inrush transient a 2 sec output short circuit (ma) low line (v i n =min.) (a) standby mode (ma) current (ma) positive logic p model suffix negative logic n model suffix uce-1.5/20-d48 48 34 32 10-30, model dependent 0.05 a 2 sec 50-150, model dependent 0.97 1-10, model dependent l-c see notes 1.0 off=ground pin to +1v max. on=open or +3.5 to +15v max. off=open or +2.5v to +15v max. on=ground pin to +0.8v max. uce-1.8/30-d48 32.5 1.72 uce-2.5/20-d48 32 1.53 uce-3.3/15-d48 32 1.54 uce-3.3/30-d48 32 3.06 uce-5/10-d48 34.5 32 1.53 pi uce-12/4.2-d48 34 32 1.52 l-c uce-12/8.3-d48 32 3.07 output characteristics model family v o u t v v o u t accuracy 50% load % of v n o m capacitive loading max. low esr <0.02? max. resistive load f adjustment range temperature coeffcient minimum loading remote sense compen - sation ripple/ noise (20 mhz bandwidth) line/load regulation effciency current limit inception 98% of vout, after warmup a uce-1.5/20-d48 1.5 1% 10,000 C10 to +10% of vnom. 0.02% of vout range per c no minimum load +10% see ordering guide 24.5 uce-1.8/30-d48 1.8 10,000 36 uce-2.5/20-d48 2.5 10,000 32 uce-3.3/15-d48 3.3 10,000 24 uce-3.3/30-d48 3.3 10,000 35 uce-5/10-d48 5 1000 15. uce-12/4.2-d48 12 1000 5.5 uce-12/8.3-d48 12 1000 12 isolation characteristics model family input to output min. v input to baseplate min. v baseplate to output min. v isolation resistance m? isolation capacitance pf isolation safety rating uce-1.5/20-d48 2250 1500 1500 100 1000 basic insulation uce-1.8/30-d48 10 uce-2.5/20-d48 100 uce-3.3/15-d48 uce-3.3/30-d48 uce-5/10-d48 uce-12/4.2-d48 uce-12/8.3-d48 miscellaneous characteristics model family calculated mtbf 4 operating temperature range with derating ( c) operating pcb temperature (no derating) storage temperature range ( c) thermal protection/ shutdown (oc) short circuit current (a) overvoltage protection 12 (v) via magnetic feedback (v) short circuit protection method short circuit duration 16 relative humidity ( non-condensing) uce-1.5/20-d48 tbc ?40 to +85 ?40 to +120 ?55 to +125 120 5 1.95 current limiting, hiccup autorestart. remove overload for recovery. continuous, output shorted to ground. no damage. to +85c/85% uce-1.8/30-d48 2.8 v. max uce-2.5/20-d48 1.8 m hrs 3 uce-3.3/15-d48 tbc 4.25 uce-3.3/30-d48 uce-5/10-d48 2.6 m hrs 110 0.5 7 max. uce-12/4.2-d48 tbc 125 5 14.5 uce-12/8.3-d48 2.4 m hrs s pecifications
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com input voltage: continuous: 48 volt input models 75 volts transient (100 msec. max.) 48 volt input models 100 volts on/off control +15 volts input reverse polarity protection 5 amps, 10 sec. max. output overvoltage protection magnetic feedback. see specifcations. output current * current-limited. devices can withstand sustained short circuit without damage. storage temperature C40 to +125 c. lead temperature +280 c, 10 seconds max. absolute maximums 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 specifcations table is not implied nor recommended. note: not all model combinations are available. absolute maximum ratings mdc_uce.a12 page 4 of 10 dynamic characteristics model family dynamic load response (50-75-50% load step) to 1% of fnal value start-up time switching frequency khz v i n to v o u t regulated (max.) remote on/ off to v o u t regulated (max.) msec uce-1.5/20-d48 100 50 50 480 uce-1.8/30-d48 150 10 10 400 40 uce-2.5/20-d48 100 50 50 350 20 uce-3.3/15-d48 200 50 50 480 50 uce-3.3/30-d48 50 15 10 380 40 uce-5/10-d48 100 50 50 400 20 uce-12/4.2-d48 30 60 60 200 10 uce-12/8.3-d48 30 50 50 (1) all models are tested and specifed with external 1||10 f ceramic/tantalum output capacitors and no external input capacitor. all capacitors are low esr types. these capacitors are necessary to accommodate our test equipment and may not be required to achieve specifed performance in your applications. all models are stable and regulate within spec under no-load conditions. general conditions for specifcations are +25 deg.c, v in = nominal, v o u t = nominal, full load. adequate airfow must be supplied for extended testing under power. (2) input ripple current is tested and specifed over a 5 hz to 20 mhz bandwidth. input fltering is c in = 33 f, 100v tantalum, c b u s = 220 f, 100v electrolytic, l b u s = 12 h. (3) note that maximum power derating curves indicate an average current at nominal input voltage. at higher temperatures and/or lower airfow, the dc/dc converter will tolerate brief full current outputs if the total rms current over time does not exceed the derating curve. all derating curves are presented at sea level altitude. be aware of reduced power dissipation with increasing density altitude. (4) mean time before failure is calculated using the telcordia (belcore) sr-332 method 1, case 3, ground fxed conditions, tpcboard=+25 deg.c, full output load, natural air convection. (5) the on/off control is normally controlled by a switch. but it may also be driven with external logic or by applying appropriate external voltages which are referenced to input common. the on/off control input should use either an open collector or open drain transistor. (6) short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting. (7) the outputs are not intended to sink appreciable reverse current. this may damage the outputs. (8) output noise may be further reduced by adding an external flter. see i/o filtering and noise reduction. (9) all models are fully operational and meet published specifcations, including cold start at C40oc. (10) regulation specifcations describe the deviation as the line input voltage or output load current is varied from a nominal midpoint value to either extreme. (11) alternate pin length and/or other output voltages are available under special quantity order. (12) output current limit is non-latching. when the overcurrent fault is removed, the converter will immediately recover. (13) do not exceed maximum power specifcations when adjusting the output trim. (14) at zero output current, the output may contain low frequency components which exceed the ripple specifcation. the output may be operated indefnitely with no load. (15) if reverse polarity is accidentally applied to the input, a body diode will become forward biased and will conduct considerable current. to ensure reverse input protection with full output load, always connect an external input fuse in series with the +v in input. use approximately twice the full input current rating with nominal input voltage. performance specification notes s pecifications , continued
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com mdc_uce.a12 page 5 of 10 physical characteristics outline dimensions see mechanical specs (below) pin material copper alloy pin diameter 0.04/0.062" (1.016/1.524mm) pin fnish nickel underplate with gold overplate weight uce-1.5/20-d48 0.67 ounces (19 grams) uce-1.8/30-d48, 0.71 ounces (20 grams) uce-2.5/20-d48 uce-5/10-d48 uce-12/4.2-d48 uce-3.3/15-d48 1 ounce (28 grams) uce-3.3/30-d48, uce-12/8.3-d48 0.81 ounces (23 grams) electromagnetic interference (conducted and radiated) (external flter required) fcc part 15, class b, en55022 safety designed to meet ul/cul 60950-1, csa-c22.2 no. 60950-1, iec/en 60950-1 s pecifications , continued
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com mdc_uce.a12 page 6 of 10 mechanical specifications dimensions are in inches (mm). typical component locations are shown. actual units may vary. input/output connections pin function p32 1 ?input 2 on/off control 3 +input 4 ?output 5 ?sense 6 output trim 7 +sense 8 +output 2.30 (58.4) 2.00 (50.8) 0.37 max (9.4) 0.18 (4.6) 0.300 (7.62) 0.300 (7.62) 0.15 (3.81) 0.900 (22.9) 0.015 minimum clearance between standoffs and highest component pins 1-3, 5-7: 0.0400.001 (1.0160.025) dia. pins 4, 8: 0.0600.001 (1.5240.025) dia. 1 2 3 4 pin 8 without baseplate 2.30 (58.42) 2.00 (50.80) 0.37 max (9.4) 0.18 (4.6) 0.300 (7.62) 0.300 (7.62) 0.15 (3.81) 0.900 (22.9) screw length must not go through baseplate. pins 1-3, 5-7: 0.0400.001 (1.0160.025) dia. pins 4, 8: 0.0600.001 (1.5240.025) dia. 1 2 3 4 pin 8 0.015 minimum clearance between standoffs and highest component with baseplate 0.50 (12.7) 2.00 (50.8) 0.18 (4.6) 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?
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com mdc_uce.a12 page 7 of 10 where, ? ? ? ?v nom ? v out ) / v nom ? v nom is the nominal, untrimmed output voltage. v out is the desired new output voltage. do not exceed the speci?ed trim range or maximum power ratings when adjusting trim. use 1% precision resistors mounted close to the converter on short leads. trim equations trim down connect trim resistor between trim pin and ?sense ? 5.11 r trimdn (k ) = ? 10.22 trim up connect trim resistor between trim pin and +sense 1.225 ? 5.11 v nom (1+? ? r trimup (k ) = ? 10.22 ? ? 5.11 figure a. trim connections using a trimpot figure d. trim connections to decrease output voltages figure b. trim connections to increase output voltages load +output ?input +input on/off control trim +sense ?output ?sense load r trim down +output ?input +input on/off control trim +sense ?output ?sense load r trim up +output ?input +input on/off control trim +sense ?output ?sense trim equations trim circuits figure c. driving the on/off control pin (suggested circuit) 1 3 4 on /off control - i n put +i nput +vcc connect sense to its respective v o u t pin if sense is not used with a remote load.
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com typical performance curves 40 45 50 55 60 65 70 75 80 85 90 95 3 5 7 9 11 13 15 17 19 21 23 25 27 29 load current (a) ef?ciency (%) uce-1.8/30-d48 ef?ciency vs line voltage & load current @ 25oc vin = 75v vin = 48v vin = 36v 0 5 10 15 20 25 30 35 30 35 40 45 50 55 60 65 70 75 80 ambient temperature (oc) output current (a) uce-1.8/30-d48 maximum current temperature derating (vin = 48v, no baseplate, longitudinal air?ow at sea level) 300 lfm 100 lfm 200 lfm 400 lfm 10 12 14 16 18 20 30 40 50 60 70 80 ambient temperature (oc) output current (a) uce-2.5/20-d48 maximum current temperature derating (vin = 48v, with baseplate, longitudinal air?ow at sea level) 200 lfm natural convection 100 lfm 300 lfm 70 75 80 85 90 95 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 load current (a) ef?ciency (%) uce-2.5/20-d48 ef?ciency vs line voltage & load current @ 25oc vin = 75v vin = 48v vin = 36v 10 12 14 16 18 20 30 40 50 60 70 80 ambient temperature (oc) output current (a) uce-1.5/20-d48 maximum current temperature derating (vin = 48v, no baseplate, longitudinal air?ow at sea level) 300 lfm 100 lfm 200 lfm 400 lfm 60 65 70 75 80 85 90 3 6 9 12 15 18 vin = 75v vin = 48v vin = 36v load current (a) ef?ciency (%) uce-1.5/20-d48 ef?ciency vs line voltage & load current @ 25oc mdc_uce.a12 page 8 of 10
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com uce-3.3/15-d48 maximum current temperature derating (vin = 48v, no baseplate, longitudinal air?ow at sea level) 0 2 4 6 8 1 0 1 2 1 4 1 6 3 0 4 0 5 0 6 0 7 0 8 0 ambient temperature (oc) output current (a) 300 lfm 100 lfm 200 lfm 400 lfm uce-3.3/15-d48 ef?ciency vs. line voltage & load current @ +25oc 7 0 7 5 8 0 8 5 9 0 9 5 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 load current (a) e f ? c i e n c y (%) vin = 75v vin = 48v vin = 36v typical performance curves 3 3.25 3.5 3.75 4 4.25 30 40 50 60 70 80 ambient temperature (oc) output current (a) 100 lfm 200 to 400 lfm uce-12/4.2-d48 maximum current temperature derating (vin = 48v, no baseplate, longitudinal air?ow at sea level) 60 65 70 75 80 85 90 95 0.6 1.2 1.8 2.4 3.0 3.6 4.2 load current (a) ef?ciency (%) uce-12/4.2-d48 ef?ciency vs. line voltage & load current @ +25oc vin = 75v vin = 48v vin = 36v 40 45 50 55 60 65 70 75 80 85 90 95 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 load current (a) ef?ciency (%) uce-3.3/30-d48 ef?ciency vs line voltage & load current @ 25oc vin = 75v vin = 48v vin = 36v 0 5 10 15 20 25 30 35 30 35 40 45 50 55 60 65 70 75 80 ambient temperature (oc) output current (a) uce-3.3/30-d48 maximum current temperature derating (vin = 48v, no baseplate, longitudinal air?ow at sea level) 300 lfm 100 lfm 200 lfm 400 lfm mdc_uce.a12 page 9 of 10
uce series isolated, high-density, eighth-brick 100w dc/dc converters technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com uce-12/8.3-d48 maximum current temperature derating (vin = 48v, no baseplate, longitudinal air?ow at sea level) 0 1 2 3 4 5 6 7 8 9 30 35 40 45 50 55 60 65 70 75 80 85 300 lfm 100 lfm 200 lfm 400 lfm ambient temperature (oc) output current (a) uce-12/8.3-d48 maximum current temperature derating at sea level (vin = 48v, with baseplate, air?ow is from -vin to +vin) 0 1 2 3 4 5 6 7 8 9 30 35 40 45 50 55 60 65 70 75 80 85 300 lfm 100 lfm 200 lfm 400 lfm ambient temperature (oc) output current (amps) uce-12/8.3-d48 ef?ciency vs line voltage & load current @ 25oc 70 75 80 85 90 95 3 4 5 6 7 8 load current (a) ef?ciency (%) 0 1 2 3 4 5 vin = 75v vin = 48v vin = 36v typical performance curves mdc_uce.a12 page 10 of 10 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 herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. specifcations are subject to change without notice. ? 2008 murata power solutions, inc. usa: mansfeld (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: munich@murata-ps.com japan: tokyo, tel: 3-3779-1031, email: sales_tokyo@murata-ps.com osaka, tel: 6-6354-2025, e mail: 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, mansfeld, ma 0204 8 -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 registered 08/19/08
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