ndx series isolated 7.5w wide input single & dual output dc/dc converters kdc_ndxc.g01 page 1 of 6 all enquiries: www.murata-ps.com/support 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 output current at 25% load 2 output current at 100% load 2 input current at 0% load input current at 100% load input current at shutdown ripple &noise 3 (typ.) ripple &noise 3 (max.) ef?ciency (min.) isolation capacitance closest alternative (click for data sheet) v ma ma a ma mvp-p % pf ncs6 series ndxs0512c 5 12 156 625 42 2.02 79 110 68 55 ndxs0512ec 5 12 156 625 42 2.02 0.48 79 110 68 55 ndxs0515c 5 15 125 500 46.2 2.02 55 80 67 49 ndxs0515ec 5 15 125 500 46.2 2.02 0.46 55 80 67 49 ndxs1212c 12 12 156 625 19.4 0.77 31 50 77 56 ncs6s1212c ndxs1212ec 12 12 156 625 19.4 0.77 0.51 31 50 77 56 ncs6s1212c ndxs1215c 12 15 125 500 27 0.77 23 40 77 53 ncs6s1215c ndxs1215ec 12 15 125 500 27 0.77 0.51 23 40 77 53 ncs6s1215c ndxs2412c 24 12 156 625 13.8 0.38 24 50 80 55 ncs6s1212c ndxs2412ec 24 12 156 625 13.8 0.38 0.53 24 50 80 55 ncs6s1212c ndxs2415c 24 15 125 500 20.6 0.37 24 45 80 56 ncs6s1215c ndxs2415ec 24 15 125 500 20.6 0.37 0.53 24 45 80 56 ncs6s1215c ndxs4812c 48 12 156 625 8.8 0.187 20 40 81 58 ncs6s4812c ndxs4812ec 48 12 156 625 8.8 0.187 0.47 20 40 81 58 ncs6s4812c ndxs4815c 48 15 125 500 10.2 0.187 20 40 82 58 ncs6s4815c ndxs4815ec 48 15 125 500 10.2 0.187 0.48 20 40 82 58 ncs6s4815c NDXD0505C 5 5 150 600 19.4 1.83 20 40 67 40 ndxd0505ec 5 5 150 600 19.4 1.83 0.075 20 40 67 40 ndxd0512c 5 12 78.1 312 33.4 2.15 21 45 69 42 ndxd0512ec 5 12 78.1 312 33.4 2.15 0.075 21 45 69 42 ndxd0515c 5 15 62.5 250 41.8 2.69 15 35 71 43 ndxd0515ec 5 15 62.5 250 41.8 2.69 0.075 15 35 71 43 ndxd1205c 12 5 187 750 13.2 0.89 20 45 73 36 ncs6d1205c ndxd1205ec 12 5 187 750 13.2 0.89 0.176 20 45 73 36 ncs6d1205c ndxd1212c 12 12 78.1 312 15 0.86 25 55 78 41 ncs6d1212c ndxd1212ec 12 12 78.1 312 15 0.86 0.159 25 55 78 41 ncs6d1212c ndxd1215c 12 15 62.5 250 17 0.86 30 60 79 41 ncs6d1215c ndxd1215ec 12 15 62.5 250 17 0.86 0.175 30 60 79 41 ncs6d1215c ndxd2405c 24 5 187 750 4.2 0.402 35 60 75 58 ncs6d1205c ndxd2405ec 24 5 187 750 4.2 0.402 0.15 35 60 75 58 ncs6d1205c ndxd2412c 24 12 78.1 312 6.3 0.38 25 55 81 56 ncs6d1212c ndxd2412ec 24 12 78.1 312 6.3 0.38 0.4 25 55 81 56 ncs6d1212c ndxd2415c 24 15 62.5 250 7 0.38 30 60 82 56 ncs6d1215c ndxd2415ec 24 15 62.5 250 7 0.38 0.4 30 60 82 56 ncs6d1215c ndxd4805c 48 5 187 750 3.6 0.198 20 40 77 61 ncs6d4805c ndxd4805ec 48 5 187 750 3.6 0.198 0.08 20 40 77 61 ncs6d4805c ndxd4812c 48 12 78.1 312 5.9 0.19 25 45 82 57 ncs6d4812c ndxd4812ec 48 12 78.1 312 5.9 0.19 0.5 25 45 82 57 ncs6d4812c ndxd4815c 48 15 62.5 250 5.9 0.19 22 55 82 58 ncs6d4815c ndxd4815ec 48 15 62.5 250 5.9 0.19 0.5 22 55 82 58 ncs6d4815c 1. suf?x ec indicates optional ctrl pin is ?tted, as indicated in the mechanical dimensions section. 2. please refer to minimum load application notes section on page 4. 3. see ripple & noise characterisation method. all speci?cations typical at ta=25c, with recommended input/output capacitors (refer to application note), nominal input volta ge and rated output current unless otherwise speci?ed. features ? rohs compliant ? 2:1 wide range voltage input ? continuous short circuit protection with current foldback ? operating temperature range C40c to 85c ? 0.2% typical load regulation ? 1kvdc isolation ? ef?ciency from 67% ? 5v, 12v, 24v & 48v nominal input ? 5v, 12v & 15v outputs ? power density 0.94w/cm 3 ? optional remote on/off ? ul 94v-0 package materials ? no electrolytic capacitors ? low noise ? custom solutions available product overview the ndx series of dc/dc converters provide up to 7.5w of output power with single or dual outputs. unbalanced loading capability with an optional input control pin. input voltages of 5v (4.5v to 9v), 12v (9v to 18v), 24v (18v to 36v), and 48v (36v to 75v) with outputs of 5v, 12v or 15v provided. the device is housed in a 5 sided metal case potted with ul 94v-0 rated material. the pinout is an industry standard 5 pin arrangement with an additional optional control pin. gle obsolete i l t 5w i l t 5w obsolete obsolete
ndx series isolated 7.5w wide input single & dual output dc/dc converters kdc_ndxc.g01 page 2 of 6 all enquiries: www.murata-ps.com/support www.murata-ps.com input characteristics parameter conditions min. typ. max. units voltage range 5v input types 4.5 5 9 v 12v input types 9 12 18 24v input types 18 24 36 48v input types 36 48 75 re?ected ripple current dual outputs 5v input types with 100f at input 70 ma p-p 12v input types with 100f at input 18 24v input types with 10f at input 90 48v input types with 10f at input 80 single outputs 5v input types with 100f at input 115 12v input types with 100f at input 60 24v input types with 10f at input 50 48v input types with 10f at input 54 ripple & noise 1 bw=20hz to 300khz, with external input/output capacitors 5 10 mvrms output characteristics parameter conditions min. typ. max. units rated power ndxx0505 types 6.0 w all other types 7.5 voltage set point accuracy with external input/output capacitors 5v & 12v input 3 5 % 24v & 48v input 2 5 line regulation low line to high line, with external input/output capacitors dual output 5v & 12v input 0.1 0.9 % 24v & 48v input 0.04 0.4 single output all types 0.04 0.4 load regulation 25% total load to 100% total load with external input/output capacitors dual output 5v & 12v input 0.2 0.9 % 24v & 48v input 0.2 0.75 single output all types 0.07 0.20 cross regulation (dual outputs) % voltage change on negative output when positive load varies from 25% to 75% with negative load ?xed at 100% 5v & 12v input 5v output 3.8 6 % 12v, 15v output 1.5 5 24v & 48v input 5v output 2.5 7 12v, 15v output 2.5 5 absolute maximum ratings short-circuit protection (max. case temperature rise 95c above ambient) 12v, 15v outputs continuous 5v output, vin = nominal, 25oc continuous lead temperature 1.0mm from case for 10 seconds (to jedec jesd22-b106 iss c) 260c minimum output load for speci?cation 2 25% of rated load on each output control pin input voltage 7v input voltage, ndxd05, 10v input voltage, ndxd12, ndxs12 types 20v input voltage, ndxd24, ndxs24 types 40v input voltage, ndxd48, ndxs48 types 80v isolation characteristics parameter conditions min. typ. max. units isolation test voltage flash tested for 1 second 1000 vdc resistance viso = 1kvdc 1 g 1. see ripple & noise characterisation method 2. please refer to minimum load application notes section on page 4.
ndx series isolated 7.5w wide input single & dual output dc/dc converters kdc_ndxc.g01 page 3 of 6 all enquiries: www.murata-ps.com/support www.murata-ps.com general characteristics parameter conditions min. typ. max. units switching frequency 100% total load to 25% total load (dual output types) 5v & 12v input 5v, 12v & 15v outputs 100 900 khz 24v & 48v input 5v outputs 100 680 12v & 15v outputs 620 100% total load to 25% total load (single output types) 5v, 12v & 24v input 12v & 15v output 90 850 48v input 12v & 15v output 90 600 control pin input 1 module on (or pin unconnected) single outputs -0.6 0.8 v 0 0.1 ma dual outputs -0.6 0.8 v -0.1 0.2 ma module off single outputs 3.0 7.0 v 0.7 3.0 ma dual outputs 3.0 7.0 v 0.3 3.0 ma temperature characteristics parameter conditions min. typ. max. units operation -40 85 c storage -50 130 case temperature rise above ambient 100% load, nom v in , still air 1212, 1215, 2412, 2415, 4812, 4815 35 0512, 2405, 4805 43 0505, 0515, 1205 48 mean time to failure (mttf) 2 part number 0c 25c units ndxd2412c 2590 1528 khrs ndxd2415c 2492 1462 ndxd4812c 2587 1558 ndxd4815c 2351 1379 1. see application notes on page 4. 2. calculated using mil-hdbk-217f with nominal input voltage at full load. all speci?cations typical at t a =25 c, nominal input voltage and rated output current unless otherwise speci?ed. rohs compliance information this series is compatible with rohs soldering systems with a peak wave solder temperature of 260oc for 10 seconds. the pin termination ?nish on this product series is a gold ?ash (0.05-0.10 micron) over nickel preplate. the series is backward compatible with sn/pb soldering systems. for further information, please visit www.murata-ps.com/rohs
ndx series isolated 7.5w wide input single & dual output dc/dc converters kdc_ndxc.g01 page 4 of 6 all enquiries: www.murata-ps.com/support www.murata-ps.com application notes external capacitance although these converters will work without external capacitors, they are necessary in order to guarantee the full parametric performance over the full line and load range. all parts have been tested and characterised using the following values and test circuit. value input voltage c in c out1 c out2 5v & 12v 100f, 100v 0.1f, 25v multi-layer ceramic 100f, 25v (low esr) 24v & 48v 10f, 200v recommended input & output capacitors control pin cross regulation dual output: this provides an off function, which puts the converter into a low power mode. when the pin is high the converter is off. standard ttl levels can be used but the maximum high level must not exceed 7.0v. the pin can be left open for normal operation or at voltage below 0.8v with respect to the -v in pin. single output: as per dual output, however a series diode must be ?tted when the control pin is used on the single output variants. recommended diode 1n4148 or similar (direction of ?tting is cathode to control pin). load regulation is at its best when the positive and negative loads are balanced. when the loads are asymmetric, the negative output is not as tightly regulated as the positive output. to meet ripple speci?cation a total minimum load of 25% full load is required, however, the ndx can be used with much lighter loading at the expense of increased ripple. a small load of 150mw is required on the negative output to ensure the maximum negative output voltage is not exceeded. ndx cross regulation is de?ned on page 2. minimum load the minimum load for correct operation is 25% of the full rated load across the speci?ed input voltage range. lower loads may c ause a signi?cant increase in output ripple and may cause the output voltage to exceed its speci?cation transiently during power-down when the input voltage also falls bel ow its rated minimum. a minimum loading of 30% load is required on ndxd4805 to prevent output voltage rise above speci?cation during power-down. 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 ndx 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? for a part holding no speci?c agency approvals, such as the ndx series, both input and output should normally be maintained wit hin 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 ndx series has an ei ferrite core, with no additional insulation between primary and secondar y 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 insulation. any m aterial, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tes ts should be strictly limited. we therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% fr om 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. ndxdc c in +v out -v in +v in -v out ov c out2 c out2 c out1 c out1 ndxsc c in +v out -v in +v in ov c out2 c out1
ndx series isolated 7.5w wide input single & dual output dc/dc converters kdc_ndxc.g01 page 5 of 6 all enquiries: www.murata-ps.com/support www.murata-ps.com oscilloscope y input supply c1 c2 c3 r1 t1 r2 input output dc/dc converter r load + + - - characterisation test methods ripple & noise characterisation method ripple and noise measurements are performed with the following test con?guration with the inclusion of recommended input and ou tput capacitors. c1 1f x7r multilayer 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 input re?ected ripple current test method input re?ected ripple current measurements are performed with the following test con?guration with the inclusion of recommended input and output capacitors. c1 220uf with esr of <0.1 at 100khz, rated at supply voltage l1 12uh rated at 150% minimum of the dc current taken by the converter. c2 the recommended input capacitor for the dc/dc converter. l load dc/dc converter + input - input c1 c2 supply +v supply -v current probe
ndx series isolated 7.5w wide input single & dual output dc/dc converters kdc_ndxc.g01 page 6 of 6 all enquiries: 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. ? 2011 murata power solutions, inc. murata power solutions, inc. 11 cabot boulevard, mans?eld, ma 02048-1151 u.s.a. iso 9001 and 14001 registered www.murata-ps.com/locations package specifications mechanical dimensions pin connections pin function duals singles 1-v in -v in 2+v in +v in 3* ctrl ctrl 4+v out +v out 5 ov no pin 6-v out ov * optional pin recommended footprint details tube outline dimensions * optional pin all dimensions in inches 0.010 (mm 0.25mm) except where stated otherwise. all pins on a 0.100 (2.54) pitch and within 0.010 (0.25) of true position. the copper case is connected to the output (-v out ) pin. care is needed in the design of this circuit board on which the converter is mounted. top side tracks must not contact the edge of the case on the underside of the unit. please note that from 2010 onwards you may receive either a blue or a black case ?nish. 0.8 (20.32) 0.230.04 (5.841.0) 0.392 (9.96) 0.2 (5.08) 0.20 (5.08) 0.80 (20.32) 0.189 (4.8) 0.157 (4.0) ? 0.394 (10.00) 0.98 (25.00) 1.26 (32.00) * xyyww ndxd2412c 0.041 (1.04) 0.035 (0.90) 3 2 1 4 5 6 0.400 (10.16) 0.092 (2.34) weight: 20g 0.1 (2.54) * 0.1 (2.54) 0.069 (1.75) 0.063 (1.60) ? holes 0.00394 ( 0 ? ? hole not required for single output variants. all dimensions in inches 0.010 (mm 0.25mm). all dimensions in inches 0.010 (mm 0.25mm). quantity: 15 0.0310.006 (0.800.15) 0.2360.020 (6.000.50) 0.732 (18.60) 0.488 (12.40) 1.362 (34.60)
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