mee3 series 1kvdc isolated 3w single output dc/dc converters kdc_mee3.a02 page 1 of 5 www.murata-ps.com www.murata-ps.com/support 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 mhrs mee3s0505sc 5 5 600 703 6.3 8 46 70 80 83 32 3.9 MEE3S0509SC 5 9 333 677 5.2 6.5 28 45 84 87 50 2.9 mee3s0512sc 5 12 250 691 4.7 6 26 45 83 86 41 4.2 mee3s0515sc 5 15 200 679 4.7 6.5 24 45 85 88 51 2.5 mee3s1205sc 12 5 600 290 4.3 6 41 60 82 85 42 3.6 mee3s1209sc 12 9 333 280 3.5 5 21 40 84 88 66 3.7 mee3s1212sc 12 12 250 280 3 4.5 19 40 84 88 77 3.4 mee3s1215sc 12 15 200 277 2.7 4 21 40 85 89 91 3.4 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 5 15 ma p-p 12v input types 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 second 1000 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 mee3sxx05sc, mee3s0512c 40 mee3s0515c, mee3s1209c, mee3s1212c 35 mee3s1215c, mee3s0509c 30 cooling free air convection absolute maximum ratings lead temperature 1mm from case for 10 seconds 260c input voltage v in , mee3s05 types 7v input voltage v in, mee3s12 types 15v product overview the mee3 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 3 . available in an industry standard sip package, with a pin compatible power upgrade path from the 1w nme/nke and 2w nml series, they are ideally suited for providing local supplies on control system boards with the added bene?t of 1kvdc galvanic isolation. features ? ul 60950 recognized ? rohs compliant ? typical ef?ciency from 83% ? power density 2.68w/cm 3 ? wide temperature performance at full 3 watt load, C40c to 85c 3 ? ul 94v-0 package material ? no heatsink required ? industry standard pinout ? 5v & 12v input ? 5v, 9v, 12v, & 15v output ? fully encapsulated with toroidal magnetics ? no external components required ? no electrolytic or tantalum capacitors 1. see ripple & noise characterisation method. 2. calculated using mil-hdbk-217f fn2 with nominal input voltage at full load. 3. see safety approval section on page 2. all speci?cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci?ed.
mee3 series 1kvdc isolated 3w single output dc/dc converters kdc_mee3.a02 page 2 of 5 www.murata-ps.com/support 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 isola tion. murata power solutions mee3 series of dc/dc converters are all 100% production tested at their stated isolation voltage. this i s 1kvdc for 1 second. a question commonly asked is, what is the continuous voltage that can be applied across the part in normal operation? the mee3 series has been recognized by underwriters laboratory for functional isolation. both input and output should normally be maintained within 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 nev er be used as an element of a safety isolation sys- tem. the part could be expected to function correctly with several hundred volts offset applied continuously across the isolati on barrier; but 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 circuits 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 mee3 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 safety approval the mee3 series has been recognized by underwriters laboratory (ul) to ul 60950 for functional isolation in a maximum still air ambient temperature of 63c and/or case tempera- ture limit of 91c. case temperature measured on the face opposite the pins. file number e179522 applies. the mee3 series of converters are not internally fused so to meet the requirement of ul 60950, an input line fuse should always be used. an anti-surge 2.5a should be used for mee3s05xxsc models, and an anti-surge 1a should be used for mee3s12xxsc models. all fuses should be ul approved and rated to at least the maximum allowable dc input voltage. 150 100 50 0 -40 0 1.5 3.0 4.5 safe operating area 85c ambient temperature (c) output power (w)
mee3 series 1kvdc isolated 3w single output dc/dc converters kdc_mee3.a02 page 3 of 5 www.murata-ps.com/support 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. 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 dc dc l c load power source inductor capacitor l, h smd through hole c, f mee3s0505sc 10 84103c 11r103c 4.7 MEE3S0509SC 22 84223c 11r223c 2.2 mee3s0512sc 47 84473c 11r473c 1 mee3s0515sc 47 84473c 11r473c 1 mee3s1205sc 10 84103c 11r103c 4.7 mee3s1209sc 22 84223c 11r223c 2.2 mee3s1212sc 47 84473c 11r473c 1 mee3s1215sc 47 84473c 11r473c 1 oscilloscope y input supply c1 c2 c3 r1 t1 r2 input output dc/dc converter r load + + - -
mee3 series 1kvdc isolated 3w single output dc/dc converters kdc_mee3.a02 page 4 of 5 www.murata-ps.com/support efficiency vs load mee3s05xxsc input voltage mee3s12xxsc input voltage 0 10 20 30 40 50 60 70 80 90 100 0 102030405060708090100 load (%) ef?ciency (%) 15v 12v 9v 5v 0 10 20 30 40 50 60 70 80 90 100 0 102030405060708090100 load (%) ef?ciency (%) 15v 12v 9v 5v
mee3 series 1kvdc isolated 3w single output dc/dc converters kdc_mee3.a02 page 5 of 5 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 chan ge 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/ package specifications mechanical dimensions pin connections - 4 pin sip pin function 1-v in 2+v in 3-v out 4+v out tube outline dimensions recommended footprint details 14.15 (0.557) max. 8.15 (0.321) max. 10.15 (0.400) max. 4.10.5 (0.160.020) 0.25 (0.100) 0.4 (0.016) min. 3.16 (0.124) 3.87 (0.152) 7.62 (0.300) 1.00-1.45 (0.039-0.057) 0.55 (0.022) 0.45 (0.018) 1234 xyywwi mee3s0505sc all dimensions in mm 0.1mm (inches 0.004). all pins on a 2.54 (0.1) pitch and within 0.25 (0.01) of true position. weight: 2.3 g sip package 2.54 (0.1) 2.54 (0.1) 1.15 (0.0453) 1.00 (0.0394) ? 0.1 (0.00394) 4 holes tube quantity: 35 unless otherwise stated all dimensions in mm (inches) 0.5mm. 17.00 (0.669) 11.43 (0.45) 4.00 (0.157) 9.05 (0.356) 0.500.15 (0.1970.006) unless otherwise stated all dimensions in mm (inches) 0.5mm. tube length: 520mm 2mm (20.47).
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