NMK Series www.murata-ps.com 3kVDC Isolated 2W Single & Dual Output DC/DC Converters Wide temperature performance at full 2 Watt load, –40°C to 85°C UL 94V-0 package material No heatsink required Industry standard pinout 3kVDC isolation (1 minute) 5V, 12V, 15V & 24V inputs 5V, 9V, 12V, & 15V output Fully encapsulated with toroidal magnetics No electrolytic or tantalum capacitors PRODUCT OVERVIEW The NMK series of industrial temperature range DC/DC converters, available in industry standard SIP packaging offers a power upgrade path from the 1W NMV series. The un-regulated NMK series has superior output voltage set point accuracy in conjunction with excellent load regulation for this converter type. Unbalanced loading capabilities on dual output variants, all of the rated output power may be drawn from a single output 3. mVp-p 20 25 20 20 30 20 23 16 55 40 40 40 70 55 55 70 40 30 20 20 30 20 20 20 50 35 35 35 50 45 45 35 % % pF kHrs 80 83 83 84 80 83 85 84 81 83 84 85 80 83 84 85 81 83 84 84 80 83 84 83 81 82 84 85 81 84 85 85 83 86 87 87 83 87 88 89 84 86 87 88 84 87 88 88 83 86 87 87 84 87 87 87 84 86 88 88 84 87 89 89 28 36 36 34 33 53 62 56 37 51 63 72 41 59 77 85 28 33 35 31 35 50 53 57 43 47 65 74 43 65 82 86 3998 3718 3328 2855 3532 2417 2246 2020 TBD TBD TBD TBD TBD TBD TBD TBD 2324 2158 1931 1655 1952 2021 1821 1574 TBD TBD TBD TBD TBD TBD TBD TBD MTTF2 18 20 18 17 25 19 17 14 34 21 20 20 42 30 29 34 24 18 14 12 21 16 13 13 27 19 18 14 30 26 24 17 Efficiency (Min.) 7.3 5.9 5.1 4.5 4.9 3.1 2.9 2.4 5.5 4 3.5 3.5 5.5 3.5 3 3 6.2 5.3 4.8 5.2 3.9 2.8 2.7 2.4 5 3.5 3 3 5 3.5 3 3 % 5.7 4.2 3.8 3.4 4.2 2.6 2.4 2.0 4.3 3 2.5 2.4 4.2 2.7 2.1 2.2 5 3.9 3.7 3.5 3.4 2.4 2.2 1.9 3.7 2.4 2.2 2.0 3.4 2.3 1.9 1.7 Ripple & Noise (Max)1 470 455 450 450 200 190 190 185 158 153 150 149 99 95 94 93 470 455 450 450 200 190 190 190 156 153 151 150 96 94 93 93 Load Regulation (Typ) Input Current at Rated Load mA 400 222 167 133 400 222 167 133 400 222 167 133 400 222 167 133 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 Isolation Capacitance Power density 1.31W/cm3 mA 5 9 12 15 5 9 12 15 5 9 12 15 5 9 12 15 ±5 ±9 ±12 ±15 ±5 ±9 ±12 ±15 ±5 ±9 ±12 ±15 ±5 ±9 ±12 ±15 Efficiency (Typ.) Efficiency from 80% V 5 5 5 5 12 12 12 12 15 15 15 15 24 24 24 24 5 5 5 5 12 12 12 12 15 15 15 15 24 24 24 24 Ripple & Noise (Typ)1 RoHS compliant V NMK0505SAC NMK0509SAC NMK0512SAC NMK0515SAC NMK1205SAC NMK1209SAC NMK1212SAC NMK1215SAC NMK1505SAC NMK1509SAC NMK1512SAC NMK1515SAC NMK2405SAC NMK2409SAC NMK2412SAC NMK2415SAC NMK0505SC NMK0509SC NMK0512SC NMK0515SC NMK1205SC NMK1209SC NMK1212SC NMK1215SC NMK1505SC NMK1509SC NMK1512SC NMK1515SC NMK2405SC NMK2409SC NMK2412SC NMK2415SC Load Regulation (Max) UL 60950 recognized Output Voltage FEATURES Nominal Input Voltage Order Code3 Output Current SELECTION GUIDE INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Voltage range Continuous operation, 5V input types Continuous operation, 12V input types Continuous operation, 15V input types Continuous operation, 24V input types 4.5 10.8 13.5 21.6 5 12 15 24 5.5 13.2 16.5 26.4 V NMK2405SAC, NMK2409SAC, NMK2405SC, NMK2409SC 14 25 All other variants 7.5 15 Reflected ripple current mA p-p 1. See Ripple & Noise characterisation method. 2. Calculated using MIL-HDBK-217F FN2 with nominal input voltage at full load. 3. See application notes on page 3. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC_NMK.E03 Page 1 of 6 NMK Series 3kVDC Isolated 2W Single & Dual Output DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions TA=-40°C to 85°C Rated Power Voltage Set Point Accuracy Line regulation Min. Typ. See tolerance envelope High VIN to low VIN Max. Units 2 W 1.05 1.2 %/% Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds Input voltage VIN, NMK05 types Input voltage VIN, NMK12 types Input voltage VIN, NMK15 types Input voltage VIN, NMK24 types 260°C 7V 15V 18V 28V ISOLATION CHARACTERISTICS Parameter Conditions Min. Isolation test voltage Resistance Flash tested for 1 minute Viso= 1000VDC 3000 10 Conditions Min. VDC GΩ GENERAL CHARACTERISTICS Parameter Typ. Switching frequency Max. Units 60 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage All output types -40 -50 Case Temperature above ambient Cooling 5V output types & NMK1509SAC (Except NMK1505S(A)C & NMK2405S(A) NMK1505S(A)C & NMK2405S(A)C All other output types Free air convection TEMPERATURE DERATING GRAPH NMKXXXXSAC °C 5% Safe Operating Area 2% Typic a l Loa VNOM d Lin e 0% Output Voltage 85°C Output Voltage Output Power (W) 0 -40 Units 85 125 28 32 25 NMKXXXXSC 5% 1 Max. TOLERANCE ENVELOPE 3 2 Typ. Typic a l Loa VNOM 1% 0% d Lin e -3% 100 50 0 Ambient Temperature (°C) 150 10 25 50 75 Output Load Current (%) -4% 100 10 25 50 75 100 Output Load Current (%) www.murata-ps.com/support KDC_NMK.E03 Page 2 of 6 NMK Series 3kVDC Isolated 2W Single & Dual Output DC/DC Converters 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 specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NMK series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 3kVDC for 1 minute. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” The NMK series has been recognized by Underwriters Laboratory for functional insulation. 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 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 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 NMK series has toroidal isolation transformers, with no additional insulation between primary 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 insulation. 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 be reduced by 20% from specified 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 NMK series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum ambient temperature of 85ºC and/or case temperature limit of 130ºC. Case temperature measured on the face opposite the pins. File number E179522 applies. The NMK Series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used as below: NMK05xxSC/SAC: 2A NMK12xxSC/SAC: 0.75A NMK15xxSC/SAC: 0.75A NMK24xxSC/SAC: 0.375A RoHS COMPLIANT INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260°C for 10 seconds. The pin termination finish 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 APPLICATION NOTES Minimum Load The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%. Unbalanced Load The NMK series offers unbalanced loading capabilities with up to the full 2W available from a single output. However, when operated in this mode there may be a slight performance decrease in efficiency and load regulation. www.murata-ps.com/support KDC_NMK.E03 Page 3 of 6 NMK Series 3kVDC Isolated 2W Single & Dual Output DC/DC Converters APPLICATION NOTES (continued) Ripple & Noise Characterisation Method All measurement to be taken with the following components connected to the UUT as detailed below. 50 Ohm coax cable, solder connections one end, BNC plug at the other end. C1 C2 C3 R1 R2 T1 RLOAD 1μF X7R multilayer ceramic capacitor rated at minimum 3 x the output voltage of the UUT 10μF tantalum capacitor rated at minimum 1.5 x the output voltage of the UUT with ESR of less than 100 milliohms at 100 kHz e.g. AVX TPS 100nF multilayer ceramic capacitor, general purpose 450 Ohm resistor, carbon film, ±1% 50 Ohm BNC termination 3T of the coax cable through a ferrite toroid eg Ferroxcube TN32/19/13-3E25 Resistive load at the UUT maximum rating. Connections via twisted wires. Differential Mode Noise Test Schematic DC/DC Converter OSCILLOSCOPE C1 C2 C3 + R2 T1 + Input SUPPLY R1 Y INPUT Output - - R LOAD EFFICIENCY VS LOAD NMK05XXSAC NMK12XXSAC 90 90 80 15V 12V 9V 5V 70 60 50 Efficiency (%) Efficiency (%) 80 40 70 15V 12V 9V 5V 60 50 40 30 30 20 20 10 10 0 0 0 10 20 30 40 50 Load (%) 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Load (%) www.murata-ps.com/support KDC_NMK.E03 Page 4 of 6 NMK Series 3kVDC Isolated 2W Single & Dual Output DC/DC Converters EFFICIENCY VS LOAD (continued) NMK15XXSAC NMK24XXSAC 90 90 80 80 70 15V 12V 9V 5V 60 50 40 Efficiency (%) Efficiency (%) 70 30 40 30 20 10 10 0 10 20 30 40 50 60 Load (%) 70 80 90 100 0 110 0 10 20 30 40 60 70 80 90 100 70 80 90 80 90 100 110 NMK12XXSC 90 90 80 80 15V 12V 9V 5V 60 50 15V 12V 9V 5V 70 Efficiency (%) 70 40 30 60 50 40 30 20 20 10 10 0 10 20 30 40 50 60 70 80 90 0 100 0 10 20 30 40 Load (%) 50 60 100 Load (%) NMK15XXSC NMK24XXSC 90 90 80 80 70 70 15V 12V 9V 5V 60 50 Efficiency (%) Efficiency (%) 50 Load (%) NMK05XXSC 0 15V 12V 9V 5V 50 20 0 Efficiency (%) 60 40 30 60 40 30 20 20 10 10 0 0 10 20 30 40 50 60 Load (%) 70 80 90 100 110 15V 12V 9V 5V 50 0 0 10 20 30 40 50 60 Load (%) 70 110 www.murata-ps.com/support KDC_NMK.E03 Page 5 of 6 NMK Series 3kVDC Isolated 2W Single & Dual Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT DETAILS 19.65 (0.774) (Max.) 4 HOLES (0.045) Ø 1.15 1.00 (0.040) 7.65 (0.301) (Max.) 10.15 (0.4) (Max.) * 0.40 (0.0016) Min. 5 6* 7 1 2 4.60 (0.181) 3.60 (0.142) 2.54 (0.1) NMK0505SAC XYYWW 0.1 (0.00394) 2.54 (0.1) 0.50 (0.020) 2.54 (0.1) * Hole not required for single output variants. Unless otherwise stated all dimensions in mm (inches) ±0.5mm. 2.52 (0.099) 1.54 (0.061) 0.30 (0.0118) 0.20 (0.0079) TUBE OUTLINE DIMENSIONS 9.30 (0.366) 1.45 (0.057) 1.00 (0.039) 15.24 (0.6) Weight: 2.8g 12.43 (0.489) * Pin not fitted on single output variants. Single output variants Pin Function 1 2 5 7 +VIN -VIN -VOUT +VOUT Dual output variants Pin Function 1 2 5 6 7 +VIN -VIN -VOUT OV +VOUT 0.50 (0.020) PIN CONNECTIONS 18.00 (0.709) All dimensions in mm ±0.25 (inches ±0.01). All pins on a 2.54 (0.1) pitch and within ± 0.25 (0.01) of true position. 5.00 (0.2) Unless otherwise stated all dimensions in mm (inches) ±0.5mm. Tube length : 520mm ±2mm (20.47). Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED Tube Quantity : 25 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/ 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 herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2012 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_NMK.E03 Page 6 of 6