ndy series isolated 3w wide input dc/dc converters kdc_ndy.f02 page 1 of 4 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 rated output voltage output current 1 input current full load ef?ciency 2 (min.) isolation capacitance mttf 3 min. load full load v (nom.) v ma ma ma % pf khrs ndy0505c 5 5 100-150 400-600 615 66 40 1939 ndy0509c 5 9 55-83 222-333 563 72 52 1926 ndy0512c 5 12 42-62 166-250 548 71 43 1907 ndy0515c 5 15 33-50 133-200 533 73 44 1924 ndy1205c 12 5 150 600 362 71 36 1928 ndy1209c 12 9 83 333 320 78 52 1916 ndy1212c 12 12 62 250 316 78 44 1897 ndy1215c 12 15 50 200 308 79 47 1914 ndy2403c 24 3.3 227 909 178 70 30 1671 ndy2405c 24 5 150 600 174 70 36 1673 ndy2409c 24 9 83 333 156 78 52 1663 ndy2412c 24 12 62 250 154 80 44 1644 NDY2415C 24 15 50 200 150 82 54 1657 ndy4803c 48 3.3 227 909 87 71 30 1676 ndy4805c 48 5 150 600 87 73 35 1668 ndy4809c 48 9 83 333 78 80 52 1663 ndy4812c 48 12 62 250 77 81 44 1648 ndy4815c 48 15 50 200 76 81 53 1661 input characteristics parameter conditions min. typ. max. units voltage range all ndy05xx 4.5 5 9 vdc all ndy12xx 9 12 18 all ndy24xx 18 24 36 all ndy48xx 36 48 72 re?ected ripple current 2 ndy2403 180 360 ma p-p ndy4803 140 290 all ndy05xx 400 500 all ndy12xx 150 170 all other ndy24xx 290 360 all other ndy48xx 100 127 absolute maximum ratings short-circuit protection continuous lead temperature 1.5mm from case for 10 seconds 300c minimum load 25% of rated load input voltage 05 types 10v input voltage 12 types 20v input voltage 24 types 40v input voltage 48 types 80v internal dissipation 1.7w 1. refer to power derating graph. 2. measured at full load with external input/output capacitors, refer to ?lter circuit 1. 3. calculated using mil-hdbk-217f with nominal input voltage at full load (ground benign) at 25c. all speci?cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci?ed. features ? ul 60950 recognized ? rohs compliant ? industry standard footprint ? ef?ciency to 82% ? power density 0.90w/cm 3 ? 2:1 wide input range ? single isolated output ? short circuit protection ? low pro?le 24 pin case ? ul 94v-0 package material ? operating temperature range -40oc to 85oc ? no heatsink required ? footprint 4.73cm 2 ? 5v, 12v, 24v & 48v input ? 3.3v, 5v, 9v, 12v & 15v output ? internal smd construction ? fully encapsulated description the ndy series is a range of low pro?le dc/dc converters offering a single regulated output over a 2:1 input voltage range. all parts deliver 3w output power up to 85oc without heatsinking, except the 4.5v to 9v input voltage range which should be derated to 2w at the lower input voltage. a ?yback oscillator design with isolated feedback is used to give regulation over the full operating range of 25% to 100% of full load. it is strongly recommended that external capacitors be used on input and output to guarantee performance over full load and input voltage range.
ndy series isolated 3w wide input dc/dc converters kdc_ndy.f02 page 2 of 4 www.murata-ps.com/support output characteristics parameter conditions min. typ. max. units voltage set point accuracy with external input/output capacitors 1 5 % line regulation low line to high line, 3.3v output with external input/output capacitors 0.05 0.25 % low line to high line, all other outputs with external input/output capacitors 0.05 0.5 % load regulation 25% load to 100% load, 3.3v output with external input/output capacitors 0.6 1.0 % 25% load to 100% load, all other outputs with external input/output capacitors 0.2 0.5 % ripple 1 bw = 20hz to 300khz, 3.3v output with external input/output capacitors 80 120 mv rms bw = 20hz to 300khz, all other outputs with external input/output capacitors 5 10 noise 1 bw = dc to 100mhz, 3.3v output with external input/output capacitors 180 mv p-p bw = dc to 20mhz, all other outputs with external input/output capacitors 50 100 general characteristics parameter conditions min. typ. max. units switching frequency 100% load v in nominal 3.3v output 160 220 khz 25% load v in nominal 3.3v output 290 560 100% load v in nominal, all other outputs 80 220 25% load v in nominal, all other outputs 290 560 temperature characteristics parameter conditions min. typ. max. units operation ambient temperature -40 85 oc storage -50 130 cooling free air convection isolation characteristics parameter conditions min. typ. max. units isolation test voltage flash tested for 1 second 1000 vdc resistance viso=500vdc 1 g 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 ndy 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 ndy series has been recognized by underwriters laboratory for functional isolation. both input and output should normally b e 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 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 ndy 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. safety approval the ndy series has been recognised by underwriters laboratory (ul) to ul 60950 for functional insulation for a maximum case tem perature limit of 130oc (case temperature measured on the face opposite the pins). file number e179522 applies. note: this series gained ul 60950 recognition for products manufactured on or after datecode g1123, any ndy parts manufactured before this date code should not be considered ul 60950 recognized. any ndy that is ul recognized will be printed with the ul logo. 1. for lower ripple refer to circuit for reduced ripple.
ndy series isolated 3w wide input dc/dc converters kdc_ndy.f02 page 3 of 4 www.murata-ps.com/support rohs compliance information this series is compatible with rohs soldering systems with a peak wave solder temperature of 300oc for 10 seconds. the pin termination ?nish on this product series is bright tin. the series is backward compatible with sn/pb soldering systems. for further information, please visit www.murata-ps.com/rohs application notes recommended input & output capacitors although these converters will work without external capacitors, they are necessary in order to guarantee the full parametric p erformance over the full line and load range. all parts have been tested and characterized using the following values and test circuit. input voltage c in output voltage c out l out 5v, 12v 100f, 25v (0.25 at 100khz) 3.3v 100f, 25v (0.25 at 100khz) mps# - 24100c 24v, 48v 10f, 100v (1.5 at 100khz) 5v, 12v, 15v not required test circuit, 5v, 12v and 15v output recommended circuit for reduced ripple 3.3v output output load the minimum rated load across the whole input voltage range is 25% of the full load output. it is important to take care that t he load does not fall below this as the output ripple will greatly increase. while this condition will not harm the device the resultant increase in output ripple could cause custom ers application to malfunction. ndy c out c in - v in + v in + v out - v out ndy c out c in - v in + v in + v out - v out l out ndy05 power derating curve 4.5 2 3 4 5 input voltage (v) output power (w) 1 0 56789
ndy series isolated 3w wide input dc/dc converters kdc_ndy.f02 page 4 of 4 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 (top view) recommended footprint details tube outline dimensions all dimensions in mm 0.25mm (inches 0.01). all pins on a 2.54 (0.1) pitch and within 0.25 (0.01) of true position. weight: 6.2g (3.3v: 6.7g) 32.26 (1.27) 14.66 (0.577) 5.00 (0.197) 4.00 (0.157) 27.94 (1.10) 2.54 (0.10) 0.84 (0.033) 0.54 (0.021) 7.00 (0.276) 16.35 (0.644) max 0.30 (0.012) 0.20 (0.008) ndy4815c xyyww unless otherwise stated all dimensions in mm 0.5mm (inches 0.01). tube length : 520mm 2mm (20.470.079). tube quantity : 15 unless otherwise stated all dimensions in mm 0.5mm (inches 0.01). 2.54 (0.10) 1.45 (0.057) 1.30 (0.051) 2.54 (0.10) ? 0.2680.022 (6.800.55) 20.700.55 (0.8150.022) 16.700.55 (0.6570.022) 16.700.80 (0.6570.031) 5.500.25 (0.2170.010) 0.600.15 (0.0240.006) 11.700.80 (0.4610.031) 7 * / 7 * / 7 0 6 5 7 0 6 5 7 0 6 5 7 * / 7 * / 7 0 6 5
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