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NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 1 of 13 www.murata-ps.com for full details go to www.murata-ps.com/rohs $ www.murata-ps.com selection guide order code 1 nominal input voltage output voltage rated input current output current load regulation (typ) load regulation (max) output ripple & noise (typ) output ripple & noise (max) ef?ciency (min) ef?ciency (typ) switching frequency (typ) isolation capacitance mttf 2 mil 217 telecordia v v ma ma % % mvp-p % % khz pf khrs NXJ2s0505mc 5 5 550 400 7.5 10 50 110 68.5 72.5 140 2 2874 40967 NXJ2s1212mc 12 12 215 167 7 9 30 70 72 75 120 2 1766 65080 NXJ2s1215mc 12 15 215 133 8 10 25 60 75 77.5 110 2.2 1334 49049 NXJ2s2405mc 24 5 110 400 8 10 70 170 73 76.5 100 2.4 2026 33111 NXJ2s2415mc 24 15 105 133 6.5 8 20 50 74.5 78.5 95 2.4 1232 44260 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 13.2 continuous operation, 24v input types 21.6 24 26.4 input re?ected ripple current 5v input 15 ma p-p 12v & 24v input 5 isolation characteristics parameter conditions min. typ. max. units isolation voltage production tested for 1 second 5200 vdc quali?cation tested for 1 minute 5200 resistance viso= 1000vdc 10 g output characteristics parameter conditions min. typ. max. units rated power t a =-40c to 85c 2.0 w voltage set point accuracy see tolerance envelope line regulation high v in to low v in 24v input types 1 1.1 %/% all other input types 1.1 1.2 temperature characteristics parameter conditions min. typ. max. units speci?cation all output types -40 85 c storage -50 125 product temperature rise above ambient 5v input types 35 12v input types 30 24v input types 25 cooling free air convection absolute maximum ratings input voltage v in , NXJ2s05 types 7v input voltage v in , NXJ2s12 types 15v input voltage v in , NXJ2s24 types 28v 1. components are supplied in tape and reel packaging, please refer to package speci?cation section. orderable part numbers are NXJ2sxxxxmc-r7 (135 pieces per reel), or NXJ2sxxxxmc-r13 (600 pieces per reel). 2. calculated using mil-hdbk-217 fn2 and telecordia sr-332 calculation model at t a =25c with nominal input voltage at full load. 3. please refer to short circuit application notes. all speci?cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci?ed. product overview the NXJ2 series is a new range of lower pro?le, fully automated manufacture surface mount dc-dc converters. the NXJ2 series automated manufacturing process with substrate embedded transformer, offers increased product reliability and repeatability of performance in a halogen free, ilga inspectable package. the NXJ2 series, industry standard footprint is compatible with existing designs. the NXJ2 series has a msl rating 2, and is com- patible with a peak re?ow solder temperature of 260 c as per j-std-020. features ? patents pending ? lower pro?le ? ul60950 recognition pending ? ansi/aami es60601-1, 2 moop, 1mopp recognition pending ? 5.2kvdc isolation hi pot test ? substrate embedded transformer ? automated manufacture ? short circuit protection 3 ? halogen free
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 2 of 13 www.murata-ps.com 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 NXJ2 series of dc-dc converters are all 100% production tested at 5.2kvdc for 1 second and have been qua li?cation tested at 5.2kvdc for 1 minute. a question commonly asked is, what is the continuous voltage that can be applied across the part in normal operation? the NXJ2 series is pending recognition by underwriters laboratory, please see safety approval section for more information. whe n the insulation in the NXJ2 is not used as a safety barrier, i.e. provides functional isolation only, continuous or switched voltages across the barrier in excess of 1kv are susta inable. long term reliability testing at these voltages continues. please contact murata for further information. 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 NXJ2 series has a pcb embedded isolated transformer, using fr4 as an insolation barrier betwe en primary and secondary windings. while parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the fr4 insulation properties. any material, including fr4 is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be st rictly limited. we therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage should be reduced by 20% from speci ?ed test voltage. this consideration equally applies to agency recognized parts rated for better than functional isolation where the insulation i s always supplemented by a further insulation system of physical spacing or barriers. safety approval ansi/aami es60601-1 the NXJ2 series is pending recognition by underwriters laboratory (ul) to ansi/aami es60601-1 and provides 1 mopp (means of pat ient protection) and 2 moop (means of operator protection) based upon a working voltage of 250 vrms max, between input and output. ul 60950 the NXJ2 series is pending recognition by underwriters laboratory (ul) to ul 60950 for reinforced insulation to a working volta ge of 250vrms. fusing the NXJ2 series of converters are not internally fused so to meet the requirements of ul an anti-surge input line fuse should a lways be used with ratings as de?ned below. input voltage, 5v: 1a input voltage, 12v: 400ma input voltage, 24v: 250ma all fuses should be ul recognized and rated to at least the maximum allowable dc input voltage.
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 3 of 13 www.murata-ps.com characterisation test methods 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 + + - - rohs compliance and msl information this series is compatible with pb-free soldering systems and is also backward compatible with sn/pb soldering systems. the NXJ2 series can be soldered in accordance with j-std-020 and have a classi?cation temperature of 260c and moisture sensitivity level 2. the termination ?nish on this product is gold with plating thickness 0.12 microns.
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 4 of 13 www.murata-ps.com 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. NXJ2s0505mc NXJ2s1212mc NXJ2s1215mc NXJ2s2405mc NXJ2s2415mc 7% 8% 6% 5% 3% output load current (%) output load current (%) output voltage output voltage -4% -5% 2% -1% 100 100 75 75 50 50 25 25 10 10 6% output load current (%) -6% -1% 100 75 50 25 10 5% 4% output load current (%) output load current (%) -3% -3% 1% 1% 100 100 75 75 50 50 25 25 10 10 output voltage output voltage output voltage 3% 9%
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 5 of 13 www.murata-ps.com efficiency vs load 5v input 12v input 24v input 0 10 20 30 40 50 60 70 80 0 102030405060708090100 efficiency (%) load (%) NXJ2s0505mc 0 10 20 30 40 50 60 70 80 0 102030405060708090100 efficiency (%) load (%) NXJ2s1212mc NXJ2s1215mc 0 10 20 30 40 50 60 70 80 0 102030405060708090100 efficiency (%) load (%) NXJ2s2405mc NXJ2s2415mc
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 6 of 13 www.murata-ps.com temperature derating NXJ2s0505mc NXJ2s1212mc NXJ2s1215mc NXJ2s2405mc NXJ2s2415mc 0 10 20 30 40 50 60 70 80 90 100 55 60 65 70 75 80 85 90 95 100 maximum load % temperature c 5.5vin 5vin 0 10 20 30 40 50 60 70 80 90 100 55 60 65 70 75 80 85 90 95 100 maximum load % temperature c 26.4vin 24vin 0 10 20 30 40 50 60 70 80 90 100 55 60 65 70 75 80 85 90 95 100 maximum load % temperature c 13.2vin 12vin 0 10 20 30 40 50 60 70 80 90 100 55 60 65 70 75 80 85 90 95 100 maximum load % temperature c 26.4vin 24vin 0 10 20 30 40 50 60 70 80 90 100 55 60 65 70 75 80 85 90 95 100 maximum load % temperature c 13.2vin 12vin
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 7 of 13 www.murata-ps.com application notes short circuit performance advisory notes minimum load the NXJ2 series is not hermetically sealed, customers should ensure that parts are fully dried before input power application. 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 & start up typical start up times for this series, with a typical input voltage rise time of 2.2s with resistive only load, and with adde d output capacitance of 10f, are shown in the table below. 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 resonant fr equency) should be >20mhz. dc dc l c load power source inductor capacitor l, h smd through hole c, f NXJ2s0505mc 4.7 82472c 11r472c 10 NXJ2s1212mc 4.7 82472c 11r472c 4.7 NXJ2s1215mc 4.7 82472c 11r472c 4.7 NXJ2s2405mc 4.7 82472c 11r472c 10 NXJ2s2415mc 4.7 82472c 11r472c 4.7 start-up time part number s NXJ2s0505mc 260 NXJ2s1212mc 840 NXJ2s1215mc 1200 NXJ2s2405mc 160 NXJ2s2415mc 1110 typical start-up wave form the NXJ2 series short circuit performance is currently being evaluated. please contact murata for further information.
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 8 of 13 www.murata-ps.com emc filtering and spectra filtering the following table shows the additional input capacitor and input inductor typically required to meet en 55022 curve a & b cis pr22 average limit as shown in the follow- ing plots. the following plots show positive and negative average limit and cispr22 average limit a (pink line) and cispr22 ave rage limit b (green line) adherence limits. the below values are for guidance only and should be evaluated in the application circuit. NXJ2s0505mc (quasi peak) NXJ2s0505mc (average) NXJ2s1212mc (quasi peak) NXJ2s1212mc (average) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) inductor capacitor l, h smd through hole c, f smd NXJ2s0505mc 10 84103c 11r103c 15 grm55er71e156ka01 NXJ2s1212mc 10 82103c 11r103c 15 grm55er71e156ka01 NXJ2s1215mc 10 82103c 11r103c 15 grm55er71e156ka01 NXJ2s2405mc 10 82103c 11r103c 15 krm55lr7ya156kh01 NXJ2s2415mc 10 82103c 11r103c 15 krm55lr7ya156kh01 dc dc l c load power source 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz)
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 9 of 13 www.murata-ps.com emc filtering and spectra NXJ2s1215mc (quasi peak) NXJ2s1215mc (average) NXJ2s2405mc (quasi peak) NXJ2s2405mc (average) NXJ2s2415mc (quasi peak) NXJ2s2415mc (average) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz)
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 10 of 13 www.murata-ps.com package specifications mechanical dimensions - 5v & 12v input types pin connections pin function 1 +vin 2 -vin 5 -vout 6 +vout 7nc 8nc 11 -vin 12 nc nc - no connection. recommended footprint details all dimensions in mm(inches), controlling dimension is mm. tolerances (unless otherwise stated) 0.2 (0.008). components shown for reference only weight: 1.38g 1 12 7 6 8 5 2 11 15.49 [0.610] sma pickup point 2.54 [0.100] 0.1 (0.004) s seating plane s x8 pins sma pickup point (top of pcb) 3.160.24 [0.1240.009] 12.70 [0.500] 2.54 [0.100] x 8 places 0.61 [0.024] 11.43 [0.450] 1.45 [0.057] x5 places 1.65 [0.065] 4.410.45 [0.1740.018] 2.54 [0.100] 12.70 [0.500] x8 places 2.30 [0.091] x8 places 1.00 [0.039] recommended isolation barrier 2.54 [0.100]
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 11 of 13 www.murata-ps.com package specifications mechanical dimensions - 24v input type pin connections pin function 1 +vin 2 -vin 5 -vout 6 +vout 7nc 8nc 11 -vin 12 nc nc - no connection. recommended footprint details all dimensions in mm(inches), controlling dimension is mm. tolerances (unless otherwise stated) 0.2 (0.008). components shown for reference only weight: 1.78g 12 56 12 11 8 7 sma pickup point 16.00 [0.630] 0.1 (0.004) s seating plane s x8 pins 4.410.45 [0.1740.018] sma pickup point (top of pcb) 3.160.19 [0.1240.007] 1.65 [0.065] 14.48 [0.570] 2.54 [0.100] x 8 places 0.61 [0.024] 12.70 [0.500] 2.54 [0.100] 1.45 [0.057] x5 places 2.54 [0.100] 12.70 [0.500] x8 places 2.30 [0.091] x8 places 1.00 [0.039] recommended isolation barrier 2.54 [0.100]
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 12 of 13 www.murata-ps.com tape & reel specifications tape outline dimensions - 5v & 12v input types tape outline dimensions - 24v input type tape & reel speci?cations shall conform with current eia-481 standard unless otherwise stated all dimensions in mm(inches) controlling dimension is mm components shall be orientated within the carrier tape as indicated tape & reel speci?cations shall conform with current eia-481 standard unless otherwise stated all dimensions in mm(inches) controlling dimension is mm components shall be orientated within the carrier tape as indicated
NXJ2 series isolated 2w single output sm dc-dc converters kdc_NXJ2.a02 page 13 of 13 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/ tape & reel specifications continued reel outline dimensions reel packaging details tape & reel speci?cations shall conform with current eia-481 standard unless otherwise stated all dimensions in mm(inches) controlling dimension is mm # measured at hub ## six equi-spaced slots on 180mm/7 reel carrier tape pockets shown are illustrative only - refer to carrier tape diagram for actual pocket details. reel quantity: 7 - 135 or 13 - 600

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