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nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 1 of 11 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 2 ripple & noise ef?ciency (min) ef?ciency (typ) isolation capacitance mttf 1 package style v v ma ma % mv p-p %pf mil. tel. typ. max. typ. max. khrs NME0505DC 5 5 200 286 12 14 16 40 69 30 3415 dip nme0509dc 5 9 111 260 8 9 60 75 77 37 3078 nme0512dc 5 12 83 256 6.5 7.5 50 65 78 33 2205 nme0515dc 5 15 67 250 6 7.5 10 25 80 40 1532 nme0524dc 5 24 42 248 5.5 7.5 140 180 80 48 nme0505sc 5 5 200 286 12 14 16 40 69 30 3415 sip nme0509sc 5 9 111 260 8 9 60 75 77 37 3078 nme0512sc 5 12 83 256 6.5 7.5 50 65 78 33 2205 nme0515sc 5 15 67 250 6 7.5 10 25 80 40 1532 nme0524sc 5 24 42 248 5.5 7.5 140 180 80 48 nme1205dc 12 5 200 117 8 10 12 30 69 33 2493 dip nme1212dc 12 12 83 104 4 5 8 20 76 55 1780 nme1215dc 12 15 67 110 3 4 40 55 75 52 1313 nme1205sc 12 5 200 117 8 10 12 30 69 33 2493 sip nme1209sc 12 9 111 115 5 5.5 60 75 74 48 2311 nme1212sc 12 12 83 104 4 5 50 65 76 55 1780 nme1215sc 12 15 67 111 3 4 40 55 75 52 1313 nme1515sc 15 15 67 81 2.5 3 150 82 nme2405dc 24 5 200 58 8.5 10 150 70 40 201 dip nme2412dc 24 12 83 52 3 4 150 80 78 163 nme2415dc 24 15 67 51 2.5 3 150 80 79 136 nme2405sc 24 5 200 58 8.5 10 150 70 40 201 sip nme2412sc 24 12 83 52 3 4 150 80 78 163 nme2415sc 24 15 67 51 2.5 3 150 80 79 136 short circuit protection options nme0505spc 5 5 200 255 9.5 12 11 25 75 77 22 2887 47047 sip nme0505dpc 5 5 200 255 9.5 12 11 25 75 77 22 2887 47047 dip recommended alternative nme1209dc 12 9 111 115 5 5.5 60 75 74 48 2311 dip mee1s1209dc nme2409dc 24 9 111 54 4 5 150 75 59 185 mee1s2409dc nme2409sc 24 9 111 54 4 5 150 75 59 185 sip mee1s2409sc input characteristics parameter conditions min. typ. max. units voltage range continuous operation, 5v input types 4.5 5.0 5.5 v continuous operation, 12v input types 10.8 12.0 13.2 continuous operation, 15v input types 13.5 15 16.5 continuous operation, 24v input types 21.6 24 26.4 input short circuit current short circuit variants 95 ma input re?ected ripple current short circuit variants 3 15 ma p-p 15v input type 90 all other variants 3 26 48 1. calculated using mil-hdbk-217 fn2 and telcordia sr-332 calculation model with nominal input voltage at full load. 2. nme1515sc, nme24xxxc prior to date code x1635 have operating temperature range of 0 to 70c . 3. excludes 24v input types. all speci?cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci?ed. features ? short circuit protection options ? ul 60950 recognised ? single isolated output ? 1kvdc isolation hi pot test ? wide temperature performance at full 1 watt load, C40c to 85c 2 ? industry standard pinout ? 5v, 12v, 15v & 24v input ? 5v, 9v, 12v and 15v output ? fully encapsulated with toroidal magnetics ? no external components required ? pin compatible with cme, cre1, crl2, lme, mee1, mee3, nke & nml description the nme series of dc-dc converters is particular- ly suited to isolating and/or converting dc power rails. the galvanic isolation allows the device to be con?gured to provide an isolated negative rail in systems where only positive rails exist. the wide temperature range guarantees startup from C40c and full 1 watt output at 85c 2 . for lower ripple, refer to output ripple reduction section. the nme series offers short circuit protection options (pc) across the operating temperature range. short circuits of less than 1 cause the converter to en- ter a foldback limiting mode such that the input current is approximately 95ma for 0505 variant. protection is continuous and auto-resetting on removal of the short circuit.
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 2 of 11 www.murata-ps.com/support general characteristics parameter conditions min. typ. max. units switching frequency 5v input types 110 khz 12v input types 145 15v input types 100 24v input types 100 short circuit types 91 isolation characteristics parameter conditions min. typ. max. units isolation test voltage flash tested for 1 second 1000 vdc resistance viso= 1000vdc 10 g temperature characteristics parameter conditions min. typ. max. units speci?cation all output types 1 -40 85 c storage -50 130 case temperature above ambient non-short circuit types 5v output types 41 all other output types 2 32 short circuit types (dip) 23 short circuit types (sip) 24 cooling free air convection temperature derating graph 150 100 50 0 -40 0 0.5 1.0 1.5 safe operating area 85c ambient temperature (c) output power (w) 120c absolute maximum ratings lead temperature 1.5mm from case for 10 seconds 260c input voltage v in , nme05 types 7v input voltage v in , nme12 types 15v input voltage v in , nme15 types 18v input voltage v in , nme24 types 28v output characteristics parameter conditions min. typ. max. units rated power see derating curves 1.0 w voltage set point accuracy see tolerance envelope line regulation high v in to low v in ; all short circuit types 1.15 1.2 %/% high v in to low v in ; all other output types 1.0 1.2 150 100 50 0 -40 0 0.5 1.0 1.5 safe operating area 85c ambient temperature (c) output power (w) non-short circuit types 1 : short circuit types: 1. nme1515sc, nme24xxxc prior to date code x1635 have operating temperature range of 0 to 70c . 2. excludes 24v input types.
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 3 of 11 www.murata-ps.com/support 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 nme series of dc-dc converters are all 100% production tested at their stated isolation voltage. this is 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 nme has been recognised by underwriters laboratory for functional insulation, both input and output should normally be main tained 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 never be used as an element of a safety isolation system. the part could be expected to function correctly with several hundred volts offset applied continuously across the isolation ba rrier; 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 c ircuits 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 nme series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enamelled 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 recognised 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. safety approval the nme series has been recognised by underwriters laboratory (ul) to ul 60950 for functional insulation in a maximum ambient t emperature of 85oc and/or case temperature limit of 100oc. case temperature measured on the face opposite the pins. the nme series of converters are not internally fused so to meet the requirements of ul 60950 an anti-surge input line fuse sho uld always be used with ratings as de?ned below. nme05xxxxc: 0.5a nme12xxxxc: 0.25a nme15xxxxc: 0.2a nme24xxxxc: 0.12a all fuses should be ul recognised and rated at 125v. file number e151252 applies. rohs compliance 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. the dip types are matte tin over nickel preplate. both types in this series are backward compatible with sn/pb soldering systems. for further information, please visit www.murata-ps.com/rohs
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 4 of 11 www.murata-ps.com/support 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 th an 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 + + - - typical start-up wave form start-up time s nme0505xc 991 nme0509xc 3524 nme0512xc 5630 nme0515xc 7750 nme0524xc 19850 nme1205xc 682 nme1209xc 2102 nme1212xc 4030 nme1215xc 6193 nme1515sc 685 nme2405xc 135 nme2409xc 260 nme2412xc 430 nme2415xc 640 nme0505xpc 350
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 5 of 11 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. dc dc l c load power source inductor capacitor l, h smd through hole c, f nme0505xc 47 82473c 11r473c 4.7uf nme0509xc 47 82473c 11r473c 1uf nme0512xc 68 82683c 11r683c 1uf nme0515xc 100 82104c 11r104c 0.47uf nme0524xc 100 82104c 11r104c 0.47 nme1205xc 100 82104c 11r104c 4.7uf nme1209xc 47 82473c 11r473c 1uf nme1212xc 68 82683c 11r683c 0.47uf nme1215xc 100 82104c 11r104c 0.47uf nme1515sc nme2405xc nme2409xc nme2412xc nme2415xc nme0505xpc 22 82223c 11r223c 1uf
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 6 of 11 www.murata-ps.com/support efficiency vs load 5v & short circuit input variants 12v inputs 15v inputs 24v inputs 0 10 20 30 40 50 60 70 80 90 0 102030405060708090100 efficiency (%) load (%) nme0505xc nme0509xc nme0512xc nme0515xc nme0524xc nme0505xpc 0 10 20 30 40 50 60 70 80 90 0 102030405060708090100 efficiency (%) load (%) nme1205xc nme1209xc nme1212xc nme1215xc 0 10 20 30 40 50 60 70 80 90 0 102030405060708090100 efficiency (%) load (%) nme1515sc 0 10 20 30 40 50 60 70 80 90 0 102030405060708090100 efficiency (%) load (%) nme2405xc nme2409xc nme2412xc nme2415xc tolerance envelopes the voltage tolerance envelope shows typical load regulation characteristics for this product series. the tolerance envelope is the maximum output voltage variation due to changes in output loading. 5v, 12v, 15v & 24v input types short circuit +10% output load current (%) output voltage +5% -7.5% -2.5% +2.5% typical load line v nom 100 75 50 25 10 +9% +4% output load current (%) output voltage -6% 0% 100 75 50 25 10
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 7 of 11 www.murata-ps.com/support emc filtering and spectra filtering the following table shows the additional input capacitor and input inductor typically required to meet en 55022 curve b quasi- peak emc limit, as shown in the following plots. the following plots show positive and negative quasi peak and cispr22 average limit b (pink line) and quasi peak limit b (green line) adherence limits. inductor capacitor inductor capacitor part number l, h smd through hole c, f part number l, h smd through hole c, f nme0505xc 4.7 13r472c 4.7 nme1215xc nme0509xc nme1515sc nme0512xc nme2405xc 22 13r223c 10 nme0515xc 4.7 13r472c 4.7 nme2409xc nme0524xc nme2412xc 22 13r223c 10 nme1205xc 10 13r103c 1 nme2415xc nme1209xc nme0505xpc 10 82103c 13r103c 1 nme1212xc 10 13r103c 1 nme0505xc nme0509xc nme0512xc nme0515xc dc dc c l c ceramic capacitor
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 8 of 11 www.murata-ps.com/support emc filtering and spectra nme0524xc nme0505xpc nme1205xc nme1209xc nme1212xc nme1215xc 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz)
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 9 of 11 www.murata-ps.com/support emc filtering and spectra nme1515sc nme2405xc nme2409xc nme2412xc nme2415xc
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 10 of 11 www.murata-ps.com/support package specifications mechanical dimensions pin connections - 8 pin dip pin function 1-v in 4+v in 5+v out 7-v out pin connections - 4 pin sip pin function 1-v in 2+v in 3-v out 4+v out all dimensions in mm (inches) controlling dimension is mm. all pins on a 2.54 (0.100) pitch and within 0.1 (0.004) of true position from pin 1 at seating plane s weight: 1.30g (sip) 1.48g (dip) 1.5g (sp dip) dip package sip package 11.530.2 [0.4540.008] 10.000.25 [0.3940.010] 0.40 [0.016] min 4.100.5 [0.1610.020] (1.13 [0.044]) (2.21 [0.087]) 6.10 +0.15 -0.20 [ 0.240 +0.006 -0.008 ] 2.54 [0.100] 0.500.05 [0.0200.002] 0.250.05 [0.0100.002] 1234 s nme xxxxsc 1 11.60.15 [0.4570.006] 6.90.15 [0.2720.006] 4.100.5 [0.1610.020] 1.140.25 [0.0450.010] 1.990.25 [0.0780.010] 9.90.15 [0.3900.006] 5.08 [0.200] 0.50.05 [0.0200.002] 0.250.05 [0.0100.002] 7.62 [0.300] 7.62 [0.300] 7 4 5 nme xxxxdc
nme series isolated 1w single output dc-dc converters kdc_nme.i02 page 11 of 11 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. ? 2018 murata power solutions, inc. 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 (continued) recommended footprint details tube outline dimensions 8 pin dip tube 4 pin sip tube 4 pin sip package 2.54 [0.100] x4 holes ? 1.15 1.00 [ ? 0.045 0.039 ] 2.54 [0.100] tube quantity : 35 unless otherwise speci?ed all dimensions in mm [inches] 0.55mm [0.022]. tube length (8 pin dip) : 520mm [20.472] 2.0 [0.079]. tube length (4 pin sip) : 520mm [20.472] 2.0 [0.079]. 12.0 [0.472] 14.5 [0.571] 5.071.10[0.2000.04] 5.05 [0.199] 5.0 [0.197] 12.43 [0.489] 18.0 [0.709] 9.3 [0.366] 2.54 [0.100] 2.54 [0.100] x4 holes ? 1.15 1.00 [ ? 0.045 0.039 ] 8 pin dip package

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