mvac250 series 250w high density ac/dc power supply mvac250.a01.d26 page 1 of 7 www.murata-ps.com/support for full details go to www.murata-ps.com/rohs $ www.murata-ps.com features ? ? medical and ite safety approved ? ? 250w compact high density ? ? 3" x 5" standard footprint ? ? high ef ciency up to 94% ? ? remote sense ? ? power on, power ok (mvac250-xxafd) ? ? universal ac input with active pfc ? ? less than 1u high ?1.4" ? ? convection cooled operation up to 170w ? ? isolated 12v@1a fan output ? ? isolated 5v@2a standby output with current share model mvac250-xxafd ? ? rohs compliant ? ? active inrush protection ? ? current sharing option description the mvac250 series switching power supplies utilize advanced component and circuit technologies to deliver high ef ciency. designed for medical, telecom and industrial applications to satisfy 1u height design considerations, the mvac250 series measures only 3.0" x 5.0" x 1.40". all models offer universal ac input with active power factor correction (pfc) and compliance to worldwide safety and emc standards. ordering guide model number* natural convection cooling forced air cooling main output (v1) fan output (v2) aux output (v3) mvac250-12f 170w 250w @ 250lfm 12v 12v mvac250-24f 24v 12v mvac250-48f 50v 12v mvac250-xxafd these models also include aux output (v3) 5v * refer to page 2 for current sharing model numbers mvac250-xxafd input characteristics parameter conditions min. typ. max. units input voltage operating range* single phase 90 115/230 264 vac input frequency 47 50/60 63 hz turn-on input voltage input rising 80 90 vac turn-off input voltage input falling 70 80 input current 90vac input, full load 3.2 a inrush current at 264vac, at 25? cold start 15 apk power factor at 230vac, full load 0.96 * dc input 127-300vdc optionally available; contact your murata salesperson. output characteristics model number main output voltage (v1) load current maximum load capacitance line, load, cross regulation typical ef ciency @230vac mvac250-12f 12v 0.4 to 20.8a 0 to 1500uf +/- 1% 93% mvac250-24f 24v 0.2 to 10.4a 0 to 300uf +/- 1% 93% mvac250-48f 50v 0.1 to 5.0a 0 to 100uf +/- 1% 94% MVAC250-12AFD 12v @ 10.4a 6 0 to 20.8a 0 to 1500uf +/- 1% 6 93% mvac250-24afd 24v @ 5.2a 6 0 to 10.4a 0 to 300uf +/- 1% 6 93% mvac250-48afd 50v @ 2.5a 6 0 to 5.0a 0 to 100uf +/- 1% 6 94% main output characteristics (all models) parameter conditions typ. max. units transient response 50% load step, 1a/?ec slew rate ?5 % settling time to 1% of nominal 500 ?ec turn on delay after application of input power 3 sec output voltage rise monotonic 5 50 msec output holdup 120vac/60hz, full load 20 temperature coef cient 0.02 %/? ripple voltage & noise 1 1% remote sense compensates for up to 0.5v of lead drop with remote sense connected. protected against short circuit and reverse connection. 500 mv auxilliary output characteristics (varies by model) auxilliary output aux output voltage load current load capacitance line, load, cross regulation 3 ripple voltage & noise 1 fan (v2) all models 12v 0 to 1a 0 to 220? ?10% 2% aux (v3) ?mvac250-xxafd 5v 0 to 2a 0 to 220? ?5% 1% 1. noise and ripple is measured at an oscilloscope jack on the output, 20mhz bandwidth, and with 0.1? ceramic and 10? aluminu m electrolytic capacitors across the output pins. 2. unless otherwise speci ed all measurements are taken at 120vac input and 25? ambient temperature. 3. fan (v2) regulation band applies from 0.1a to 1a load with a minimum of 10w load on the main (v1) output. 4. fan (v2) has overvoltage protection (tracking v1) and short circuit protection. overloading the fan (v2) output can result i n perma- nent damage to the unit. 5. 24v and 50v models may exhibit up to 5% turn on overshoot for loads less than 4% of full load. 6. see current sharing option section for droop characteristics. cb test certi cate and test report pending www.murata-ps.com / en / 3d / acdc.htm l www.murata-ps.com / en / 3d / acdc.htm l www.murata- p s.com/en/3d/acdc.htm l www.murata-ps.com / en / 3d / acdc.htm l www.murata- p s.com/en/3d/acdc.htm l www.murata-ps.com / en / 3d / acdc.htm l available now at www.murata-ps.com/en/3d/acdc.html
mvac250 series 250w high density ac/dc power supply mvac250.a01.d26 page 2 of 7 www.murata-ps.com/support environmental characteristics parameter conditions min. typ. max. units storage temperature range -40 85 ? operating temperature range see power rating curves -10 70 start up -20 operating humidity non-condensing 10 95 % operating altitude -200 3000 m mtbf telcordia sr-332 m1c3 @25? 474k hours shock operating, mil-hbk-810e complies non-operating, mil-hbk-810e complies operational vibration iec-68-2-27 standard complies to levels of iec721-3-2 safety iec60950-1: 2006/a11:2009 ul60950-1 2nd ed., 2007-03-27 & csa c22.2 no.60950-1-07, 2nd, 2007.03 en60950-1:2006+a11:2009 ansi/aami es60601-1 (2005+c1:09+a2:10) csa-c22.2 no. 60601-1 (2008) 3rd edition ce marking per lvd warranty 2 years outside dimensions 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm) weight mvac250-xxf: 0.73 lbs (332.9g); mvac250-xxafd: 0.76 lbs (344.7g) residual risk (per iso 14971 & iec60601-1) for user consideration fault condition residual risk complies contact your murata salesperson for details protection characteristics parameter conditions min. typ. max. units over voltage protection 4 v1 (main output) latching 110 125 % v3 (aux output: mvac250-xxafd) latching 5.5 7.5 v over current protection 4 v1, hiccup mode 110 130 %amax over temperature protection auto-recovery complies remote sense short circuit protection complies remote sense reverse connection protection complies isolation characteristics parameter conditions min. typ. max. units isolation primary to chassis 1500 vac primary to secondary 3000 secondary to chassis 500 output to output 500 earth leakage current (under single fault condition) mvac250-xxafd: 264vac, 60hz, 25? 150 ? mvac250-xxf: 264vac, 60hz, 25? 250 current sharing option ? mvac250-xxafd only model number description MVAC250-12AFD mvac250-24afd mvac250-48afd current sharing notes: main output: current share is achieved using the droop method. nominal output voltage is achieved at 50% load and output voltag e drops at a rate of 48mv per amp for 12v output, 192mv per amp for 24v output, and 800mv per amp for 50v output. startup of parallel powe r supplies is not internally synchronized. if more than 250w combined power is needed, start-up synchronization must be provided by using a common ps_on signal. to account for ?0% full load current sharing accuracy and the reduction in full load output voltage due to droop , available output power must be derated by 15% when units are operated in parallel. current sharing can be achieved with or without remote sense connected to the common load. if oring protection is desired, please contact murata sales for external oring fet board or exter nal oring fet reference circuit design. aux (v3) output can be tied together for redundancy but total combined output power must not exceed 10w, external oring devices must be used. fan (v2) can be tied together for redundancy but total combined output power must not exceed 12w, external oring diodes can be used.
mvac250 series 250w high density ac/dc power supply mvac250.a01.d26 page 3 of 7 www.murata-ps.com/support emissions and immunity characteristic standard compliance input current harmonics iec/en 61000-3-2 class a voltage fluctuation and flicker iec/en 61000-3-3 complies conducted emissions en 55022 class b fcc part 15 class b esd immunity iec/en 61000-4-2 level 4, criterion 2 radiated field immunity iec/en 61000-4-3 level 3, criterion a electrical fast transient immunity iec/en 61000-4-4 level 4, criterion a surge immunity iec/en 61000-4-5 level 4, criterion a radiated field conducted immunity iec/en 61000-4-6 level 3, 10v/m, criterion a magnetic field immunity iec/en 61000-4-8 level 3, criterion a voltage dips, interruptions iec/en 61000-4-11 level 3, criterion b emi considerations for optimum emi performance, the power supply should be mounted to a metal plate grounded to all 4 mounting holes of the power supply. to comply with safety standards, this plate must be properly grounded to protective earth (see mechanical dimension notes). pre-complianc e testing has shown the stand-alone power supply to comply with en55022 class a radiated emissions. radiated emission results vary with system enclosur e and cable routing paths. status and control signals ? mvac250-xxafd only parameter conditions min. ps_on this signal must be pulled low to +5v_aux_rtn to turn on the main and fan (v2) output. the +5v_aux output is on when ac is applied. complies pwr_ok open collector logic goes high 50-200 msec after main output is in regulation; it goes low at least 6 msec before loss of regul ation. internal 10k pull up to +5v_aux is provided. complies efficiency plots 81 83 85 87 89 91 93 95 0102030405060708090100 ef?iency % load % mvac250-12f ef?iency 90 vin 115 vin 230 vin 81 83 85 87 89 91 93 95 0102030405060708090100 ef?iency % load % mvac250-24f ef?iency 90 vin 115 vin 230 vin 81 83 85 87 89 91 93 95 0102030405060708090100 ef?iency % load % mvac250-48f ef?iency 90 vin 115 vin 230 vin
mvac250 series 250w high density ac/dc power supply mvac250.a01.d26 page 4 of 7 www.murata-ps.com/support thermal considerations system thermal management is critical to the performance and reliability of the mvac series power supplies. performance deratin g curves are provided which can be used as a guideline for what can be achieved in a system con guration with controlled air ow at various input vo ltage conditions. the air ow curves are generated using an amca 210-99 and ashrae 51-1999 compliant wind tunnel with heated inlet air and a con trolled cfm providing a duct test section having a calculated average lfm. a correlation between the test setup and the actual system envir onment is paramount to understanding what can be achieved in an actual system. in a power supply of this density, cooling air moving both through the unit as well as around the unit strongly in uences local temperatures. the wind tunnel test setup was constructed to produce a ow with a slight back pr essure to induce both ow conditions by providing a small gap between the power supply and duct walls of 0.5" (13mm). the optimal and characterized air ow direction is from the input connector to the output connector (see diagram below). the p-q ow curve for this test setup is also shown below. the natural convection data is obtained from a horizontally mounted power supply with un-obstructed ow at room temperature. a t elevated temperature the power supply data is taken while it is surrounded by a large vented enclosure to minimize forced cross ows inherent in th e elevated temperature test system. p-q curve, ducted flow 0.0000 0.0025 0.0050 0.0075 0.0100 0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 airflow-(cfm @ 0.075 lbs/cu ft air density) static pressure (in. w.g.) air flow 13mm [0.5in] all sides * 64mm [2.5in] ambient temperature measurement power supply output connector input connector 50 75 100 125 150 175 200 225 250 275 10 20 30 40 50 60 70 output power (wa ? s) ambient temperature (degrees c) power ra ? ng at 100vac nat conv 250lfm 50 75 100 125 150 175 200 225 250 275 10 20 30 40 50 60 70 output power (wa ? s) ambient temperature (degrees c) power ra ? ng at 120vac nat conv 250lfm 50 75 100 125 150 175 200 225 250 275 10 20 30 40 50 60 70 output power (wa ? s) ambient temperature (degrees c) power ra ? ng at 230vac nat conv 250lfm 50 75 100 125 150 175 200 225 250 275 10 20 30 40 50 60 70 output power (wa ? s) ambient temperature (degrees c) power ra ? ng at 90vac nat conv 250lfm
mvac250 series 250w high density ac/dc power supply mvac250.a01.d26 page 5 of 7 www.murata-ps.com/support inrush current time: 100 msec/div, ch1: 500 v/div, ch4: 20 a/div, vin: 264 vac, ipk = 15.1 a ac applied at peak of sine wave wiring diagram for output dc out return +remote sense -remote sense +dc out j3 pin 5 j2 pins 1-6 j2 pins 7-12 j3 pin 6 . dotted lines show optional remote sense connections. optional remote sense lines can be attached to a load that is a distance away from the power supply to improve regulation at the load. mvac250-xxafd 12v load j3 pin 4 j3 pin 8 j3 pin 1 close switch (or fet, bjt, or wire) to turn on +dc out and +12v_fan +5v logic circuitry +5v_aux ps_on +5v_aux_rtn fan or other load j3 pin 3 j3 pin 7 +12v_fan +12v_fan_rtn dc out return +remote sense -remote sense +dc out j3 pin 5 j2 pins 1-6 j2 pins 7-12 j3 pin 6 . dotted lines show optional remote sense connections. optional remote sense lines can be attached to a load that is a distance away from the power supply to improve regulation at the load. mvac250-xxf 12v load fan or other load j3 pin 3 j3 pin 7 +12v_fan +12v_fan_rtn application note document number description acan-42 mvac series external oring fet reference circuit
mvac250 series 250w high density ac/dc power supply mvac250.a01.d26 page 6 of 7 www.murata-ps.com/support mechanical dimensions ? mvac250-xxf only notes: 1. protective bonding conductor from the end product protective earthing terminal must be tied to tb1. for optimum emi performa nce, 4 mounting holes must be tied to the end product protective earthing terminal. 2. this power supply requires mounting on standoffs minimum 6mm in height. if there is risk of chassis deformation or shorter s tandoff height is required, an appropriate insulator must be used under the power supply with adequate extension beyond the outline of the power supply. in all cases, the applicable safety standards must be applied to ensure proper creepage and clearance requirements are met. 3. the primary heatsink is considered a live primary circuit, and should not be touched. the primary heatsink must be kept at l east 3.5mm from chassis and 7mm from secondary circuits. dimensions: 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm) input/output connector and signal specification and mating connectors ? mvac250-xxf only connector pin description ma ting housing crimp terminal/pins input connector j1 : molex 26-62-4030 1 ac neutral molex 0009930300 molex 0008500105 (18-24 awg) molex 0008500107 (22-26 awg) 3 ac line output connector j2 : molex 39-28-1123 1,2,3,4,5,6 +dc_out molex 0039012125 molex 0039000038 7,8,9,10,11,12 +dc_out_rtn output connector j3: molex 90130-1108 1 do not use molex 0901420008 molex 0901190109 2 do not use 3 +12v_fan_rtn 4 do not use 5 + remote sense 6 - remote sense 7 +12v_fan 8 do not use 30.00.25 1.181.010 5.560.13 .219.005 ! all dimensions are in mm [in]. tolerance is 0.65mm [0.025in] j1 pin 3 pin 2 removed pin1 j2 pin 1 j3 pin 8 j3 pin12 j2 j1 pin 1 primary heatsink note 3 mtg1 mtg2 tb1 mtg3 mtg4 4.500.005 114.300.13 5.000.010 127.000.25 63.500.13 2.500.005 76.200.25 3.000.010 .250.005 6.350.13 6.500.13 .256.005 mounting holes 3.960.13 .156.005 max screw head diameter 7.40 612 511 410 39 28 17 j2 1-6 +dc_out 7-12 +dc_out_rtn 21 43 65 87 j3 1do not use 2do not use 3 +12v_fan_rtn 4do not use 5+remote sense 6-remote sense 7 +12v_fan 8do not use
mvac250 series 250w high density ac/dc power supply mvac250.a01.d26 page 7 of 7 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/ mechanical dimensions ? mvac250-xxafd only notes: 1. protective bonding conductor from the end product protective earthing terminal must be tied to tb1. for optimum emi performa nce, 4 mounting holes must be tied to the end product protective earthing terminal. 2. this power supply requires mounting on standoffs minimum 6mm in height. if there is risk of chassis deformation or shorter s tandoff height is required, an appropriate insulator must be used under the power supply with adequate extension beyond the outline of the power supply. in all cases, the applicable safety standards must be applied to ensure proper creepage and clearance requirements are met. 3. the primary heatsink is considered a live primary circuit, and should not be touched. the primary heatsink must be kept at l east 3.5mm from chassis and 7mm from secondary circuits. dimensions: 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm) input/output connector and signal specification and mating connectors ? mvac250-xxafd only connector pin description ma ting housing crimp terminal/pins input connector j1 : molex 26-62-4030 1 ac neutral molex 0009930300 molex 0008500105 (18-24 awg) molex 0008500107 (22-26 awg) 3 ac line output connector j2 : molex 39-28-1123 1,2,3,4,5,6 +dc_out molex 0039012125 molex 0039000038 7,8,9,10,11,12 +dc_out_rtn output connector j3: molex 90130-1108 1 +5v_aux molex 0901420008 molex 0901190109 2 pwr_ok 3 +12v_fan_rtn 4 ps_on 5 + remote sense 6 - remote sense 7 +12v_fan 8 +5v_aux_rtn 30.00.25 1.181.010 5.560.13 .219.005 ! all dimensions are in mm [in]. tolerance is 0.65mm [0.025in] j1 pin 3 pin 2 removed pin1 j2 pin 1 j3 pin 8 j3 pin12 j2 j1 pin 1 primary heatsink note 3 mtg1 mtg2 tb1 mtg3 mtg4 4.500.005 114.300.13 5.000.010 127.000.25 63.500.13 2.500.005 76.200.25 3.000.010 .250.005 6.350.13 6.500.13 .256.005 mounting holes 3.960.13 .156.005 max screw head diameter 7.40 612 511 410 39 28 17 j2 1-6 +dc_out 7-12 +dc_out_rtn 21 43 65 87 j3 1+5v_aux 2pwr_ok 3 +12v_fan_rtn 4ps_on 5+remote sense 6-remote sense 7 +12v_fan 8+5v_aux_rtn
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