mev3 series 3kvdc isolated 3w single output dc/dc converters kdc_mev3c.a01 page 1 of 5 technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com for full details go to www.murata-ps.com/rohs $ selection guide order code nominal input voltage output voltage output current input current at rated load load regulation (typ) load regulation (max) ripple & noise (typ) 1 ripple & noise (max) 1 ef? ciency (min.) ef? ciency (typ.) isolation capacitance mttf 2 v v ma ma % mvp-p % % pf khrs MEV3S0505SC 5 5 600 700 6.8 8 39 50 81.5 83 28 6029 mev3s0509sc 5 9 333 680 5.5 7 24 35 85.3 87 43 5163 mev3s0512sc 5 12 250 700 5 7 20 35 81.5 85.5 32 5995 mev3s0515sc 5 15 200 700 5 6 18 30 85 87.5 40 5426 mev3s1205sc 12 5 600 300 4.5 6 34 50 81.5 84 34 6063 mev3s1209sc 12 9 333 280 3.6 5 22 35 85.5 87.5 50 6056 mev3s1212sc 12 12 250 280 3.2 4.5 16 30 86 88 63 6572 mev3s1215sc 12 15 200 280 2.8 4 13 30 87 89 70 5754 input characteristics parameter conditions min. typ. max. units voltage range continuous operation, 5v input types 4.5 5 5.5 v continuous operation, 12v input types 10.8 12 13.2 re? ected ripple current 5v input types 8 18 ma p-p 12v input types 6.5 15 output characteristics parameter conditions min. typ. max. units rated power t a =-40 c to 85 c 3w voltage set point accuracy see tolerance envelope line regulation high v in to low v in 1.01 1.1 %/% isolation characteristics parameter conditions min. typ. max. units isolation test voltage flash tested for 1 minute 3000 vdc resistance viso= 1000vdc 10 g general characteristics parameter conditions min. typ. max. units switching frequency 60 khz temperature characteristics parameter conditions min. typ. max. units speci? cation all output types -40 85 c storage -50 125 case temperature rise above ambient MEV3S0505SC 37 all other types 35 cooling free air convection absolute maximum ratings lead temperature 1.5mm from case for 10 seconds 260c internal power dissipation 700mw input voltage v in , mev05 types 7v input voltage v in, mev12 types 15v product overview the mev3 series is a new range of high performance 3w dc/dc converters, offering 3w of available output power in a previously rated 2w package capable of operation over the full industrial temperature range of -40oc to 85oc. available in an industry standard sip package, with a pin compatible power upgrade path from the 1w nmv/mev and 2w nmk series, they are ideally suited for providing local supplies on control system boards with the added bene?t of 3kvdc galvanic isolation. features rohs compliant typical ef? ciency from 83% power density 1.9w/cm 3 wide temperature performance at full 3 watt load, C40c to 85c ul 94v-0 package material no heatsink required industry standard pinout 3kvdc isolation (1 minute) 5v & 12v input 5v, 9v, 12v, & 15v output fully encapsulated with toroidal magnetics no external components required no electrolytic or tantalum capacitors ul 60950 recognition pending 1. see ripple & noise characterisation method. 2. calculated using mil-hdbk-217f fn2 with nominal input voltage at full load. all speci? cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci? ed.
mev3 series 3kvdc isolated 3w single output dc/dc converters kdc_mev3c.a01 page 2 of 5 technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com temperature derating graph output voltage tolerance envelope the voltage tolerance envelope shows typical load regulation characteristics for this product series. the tolerance envelope is the maximum output voltage varia- tion due to changes in output loading. output load current (%) e g a t l o v t u p t u o v nom 5% 0% -4% 2% typical load line 100 75 50 25 10 technical notes isolation voltage hi pot test, flash tested, withstand voltage, proof voltage, dielectric withstand voltage & isolation test voltage are all terms that relate to the same thing, a test voltage, applied for a speci? ed time, across a component designed to provide electrical isolation, to verify the integrity of that isol ation. murata power solutions mev3 series of dc/dc converters are all 100% production tested at their stated isolation voltage. this i s 3kvdc for 1 minute. a question commonly asked is, what is the continuous voltage that can be applied across the part in normal operation? for a part holding no speci? c agency approvals, such as the mev3 series, both input and output should normally be maintained w ithin selv limits i.e. less than 42.4v peak, or 60vdc. the isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as a n element of a safety isolation system. the part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; bu t then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circui ts and any user-accessible circuitry according to safety standard requirements. repeated high-voltage isolation testing it is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. the mev3 series has toroidal isolation transformers, with no additional insulation between primar y and secondary windings of enameled wire. while parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insu lation. any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. we therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage b e reduced by 20% from speci? ed test voltage. this consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. rohs compliant information this series is compatible with rohs soldering systems with a peak wave solder temperature of 260c for 10 seconds. the pin termination ? nish on the sip package type is tin plate, hot dipped over matte tin with nickel preplate. they are backward compatible with sn/pb soldering systems. for further information, please visit www.murata-ps.com/rohs 150 100 50 0 -40 0 1.5 3.0 4.5 safe operating area 85c ambient temperature (c) output power (w)
mev3 series 3kvdc isolated 3w single output dc/dc converters kdc_mev3c.a01 page 3 of 5 technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com application notes minimum load the minimum load to meet datasheet speci? cation is 10% of the full rated load across the speci? ed input voltage range. lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the speci? ed output voltage if the output load falls to less than 5%. capacitive loading and start up typical start up times for this series, with a typical input voltage rise time of 2.2s and output capacitance of 10f, are sho wn in the table below. the product series will start into a capacitance of 47f with an increased start time, however, the maximum recommended output capacitance is 10f. ripple & noise characterisation method ripple and noise measurements are performed with the following test con? guration. c1 1f x7r m ultilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the dc/dc converter c2 10f tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the dc/dc converter with an esr of l ess than 100m at 100 khz c3 100nf multilayer ceramic capacitor, general purpose r1 450 resistor, carbon ? lm, 1% tolerance r2 50 bnc termination t1 3t of the coax cable through a ferrite toroid rload resistive load to the maximum power rating of the dc/dc converter. connections should be made via twisted wires measured values are multiplied by 10 to obtain the speci? ed values. differential mode noise test schematic oscilloscope y input supply c1 c2 c3 r1 t1 r2 input output dc/dc converter r load + + - - start-up time s MEV3S0505SC 165 mev3s0509sc 300 mev3s0512sc 650 mev3s0515sc 1200 mev3s1205sc 75 mev3s1209sc 200 mev3s1212sc 350 mev3s1215sc 410 typical start-up wave form
mev3 series 3kvdc isolated 3w single output dc/dc converters kdc_mev3c.a01 page 4 of 5 technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com application notes (continued) output ripple reduction by using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mv p-p max. component selection capacitor: it is required that the esr (equivalent series resistance) should be as low as possible, ceramic types are recommend ed. the voltage rating should be at least twice (except for 15v output), the rated output voltage of the dc/dc converter. inductor: the rated current of the inductor should not be less than that of the output of the dc/dc converter. at the rated cur rent, the dc resistance of the inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the dc/dc converter. the srf (self reso nant frequency) should be >20mhz. efficiency vs load mev3505xxsc input voltage mev3512xxsc input voltage dc dc l c load power source 0 10 20 30 40 50 60 70 80 90 0 102030405060708090100 load (%) ef?ciency (%) 5v 9v 12v 15v 0 10 20 30 40 50 60 70 80 90 0 102030405060708090100 load (%) ef?ciency (%) 5v 9v 12v 15v inductor capacitor l, h smd through hole c, f MEV3S0505SC 10 84103c 11r103c 4.7 mev3s0509sc 22 84223c 11r223c 2.2 mev3s0512sc 47 84473c 11r473c 1 mev3s0515sc 47 84473c 11r473c 1 mev3s1205sc 10 84103c 11r103c 4.7 mev3s1209sc 22 84223c 11r223c 2.2 mev3s1212sc 47 84473c 11r473c 1 mev3s1215sc 47 84473c 11r473c 1
mev3 series 3kvdc isolated 3w single output dc/dc converters kdc_mev3c.a01 page 5 of 5 technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com 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. ? 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: munich@murata-ps.com japan: tokyo, tel: 3-3779-1031, email: japan@murata-ps.com kyoto, tel: 81-75-955-7269, email: japan@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 package specifications mechanical dimensions recommended footprint details tube outline dimensions pin connections pin function 1+v in 2-v in 5-v out 7+v out unless otherwise stated, all dimensions in inches 0.01 (mm 0.25mm). all pins on a 0.1 (2.54) pitch and within 0.01 (0.25) of true position. weight: 2.9g
0.1 (2.54) 0.1 (2.54) ? 4 holes 0.00394 (0.1) 0.045 (1.15) 0.040 (1.00) unless otherwise stated all dimensions in inches (mm) 0.5mm. tube length : 20.47 (520mm 2mm). tube quantity : 25 unless otherwise stated all dimensions in inches (mm) 0.5mm. 12 5 7 0.774 (19.65) (max.) 0.301 (7.65) (max.) 0.4 (10.15) (max.) 0.181 (4.60) 0.142 (3.60) 0.0118 (0.30) 0.0079 (0.20) 0.6 (15.24) 0.057 (1.45) 0.039 (1.00) 0.099 (2.52) 0.061 (1.54) 0.0016 (0.40) min. 0.1 (2.54) MEV3S0505SC xyyww 0.50 (0.020)
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