NMR Series www.murata-ps.com Isolated 1W Single Output DC/DC Converters SELECTION GUIDE Order Code FEATURES RoHS compliant 1kVDC isolation Efficiency up to 80% Wide temperature performance at full 1 watt load, –40°C to 85°C Input Nominal Output Output Current at Input Voltage Current Rated Load Voltage V V mA mA NMR100C NMR101C NMR102C NMR106C NMR107C NMR108C NMR112C NMR113C NMR114C NMR118C NMR119C NMR120C 5 5 5 12 12 12 15 15 15 24 24 24 5 12 15 5 12 15 5 12 15 5 12 15 200 83 67 200 83 67 200 83 67 200 83 67 Power density up to 0.90W/cm3 INPUT CHARACTERISTICS UL 94V-0 package material Parameter Footprint from 1.17cm2 Industry standard pinout Voltage range 5V, 12V, 15V & 24V input 5V, 12V & 15V output No heatsink required Reflected ripple current 290 260 253 121 110 110 93 85 84 60 53 52 Ripple & Noise3 Efficiency Isolation MTTF1 Capacitance Typ. Max. Typ. Max. % pF kHrs 12.5 6.90 6.50 12.5 6.90 6.50 8.1 3.3 2.8 6.80 2.80 2.50 13.4 7.70 7.50 13.4 7.70 7.50 10 4 3.5 10 4.0 3.50 69 77 79 69 76 76 69 77 78 70 78 80 28 33 40 36 58 56 27 58 67 61 98 122 1847 981 667 1485 869 613 2110 1790 1560 1253 784 566 6 4.6 4.3 5.3 5 4 14 12 14 8 7 8 10 10 10 10 10 10 20 15 20 15 15 15 Conditions Min. Typ. Max. Continuous operation, 5V input types Continuous operation, 12V input types Continuous operation, 15V input types Continuous operation, 24V input types 5V & 12V input types 15V & 24V input types 4.5 10.8 13.5 21.6 5 12 15 24 1.6 5 5.5 13.2 16.5 26.4 2 10 Units Typ. Max. Units 1.0 W 1.0 1.2 %/% Typ. Max. Units V mA p-p OUTPUT CHARACTERISTICS Internal SMD construction Parameter Conditions Fully encapsulated with toroidal magnetics Rated Power2 Voltage Set Point Accuracy Line regulation TA=-40°C to 85°C See tolerance envelope High VIN to low VIN Custom solutions available Load Regulation Min. No electrolytic or tantalum capacitors ISOLATION CHARACTERISTICS DESCRIPTION The NMR series of industrial temperature range DC/DC converters are the standard building blocks for on-board distributed power systems. They are ideally suited for providing single rail supplies on primarily digital boards with the added benefit of galvanic isolation to reduce switching noise. Surface mount technology and advanced packaging materials produce rugged reliable performance over an extended temperature range from -40ºC to 85ºC. Parameter Conditions Min. Isolation voltage Resistance Flash tested for 1 second Viso=1000VDC 1000 10 VDC GΩ ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds Internal power dissipation Input voltage VIN, NMR100C, NMR101C, NMR102C Input voltage VIN, NMR106C, NMR107C, NMR108C Input voltage VIN, NMR112C, NMR113C, NMR114C Input voltage VIN, NMR118C, NMR119C, NMR120C 300°C 550mW 7V 15V 18V 28V 1. Calculated using MIL-HDBK-217FN2 with nominal input voltage at full load. 2. See derating graph. 3. See ripple & noise characterisation method. 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_NMR.D02 Page 1 of 5 NMR Series Isolated 1W Single Output DC/DC Converters GENERAL CHARACTERISTICS Parameter Conditions Switching frequency 5V input types 12V input types 15V input types 24V input types Min. Typ. Max. Units 110 160 90 80 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage All output types -40 -50 Cooling TOLERANCE ENVELOPES NMR118 °C 33 28 NMR113, NMR 114, NMR119, NMR120 All other types +4% l Loa d Lin e 0% -2.5% -5% 75 50 25 Output Load Current (%) 100 +2% VNOM 10 +5% Typical L oad Line 75 50 25 Output Load Current (%) +1% -1% -3% 100 Output Voltage Typic a Output Voltage Output Voltage Units +10% +2% VNOM 10 Max. 85 130 5V output types All other output types Free air convection Case Temperature above ambient +7% +4.5% Typ. Typi c al Lo ad L ine +2.5% VNOM -2.5% -7.5% 10 75 50 25 Output Load Current (%) 100 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. 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 NMR 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 specific agency approvals, such as the NMR series, 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 NMR 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. 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 finish on this product series is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs www.murata-ps.com/support KDC_NMR.D02 Page 2 of 5 NMR Series Isolated 1W Single Output DC/DC Converters 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%. Capacitive loading and start up Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF. Typical Start-Up Wave Form NMR100C NMR101C NMR102C NMR106C NMR107C NMR108C Start-up time μs 2301 5570 8289 783 4770 4850 NMR112C NMR113C NMR114C NMR118C NMR119C NMR120C Start-up time μs 744 1908 6620 671 5335 6370 Ripple & Noise Characterisation Method Ripple and noise measurements are performed with the following test configuration. C1 1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter 10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less C2 than 100mΩ at 100 kHz C3 100nF multilayer ceramic capacitor, general purpose R1 450Ω resistor, carbon film, ±1% tolerance R2 50Ω 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 specified values. Differential Mode Noise Test Schematic DC/DC Converter OSCILLOSCOPE C1 C2 C3 + SUPPLY Input - + R1 T1 R2 Y INPUT Output - R LOAD www.murata-ps.com/support KDC_NMR.D02 Page 3 of 5 NMR Series Isolated 1W Single Output DC/DC Converters 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 recommended. 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 current, 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 Frequency) should be >20MHz. L DC Power Source NMR100C NMR101C NMR102C NMR106C NMR107C NMR108C NMR112C NMR113C NMR114C NMR118C NMR119C NMR120C L, μH 10 47 47 10 47 47 10 47 47 10 47 47 Inductor SMD 82103C 82473C 82473C 82103C 82473C 82473C 82103C 82473C 82473C 82103C 82473C 82473C C Load DC Through Hole 11R103C 11R473C 11R473C 11R103C 11R473C 11R473C 11R103C 11R473C 11R473C 11R103C 11R473C 11R473C Capacitor C, μF 4.7 1 1 4.7 1 1 4.7 1 1 4.7 1 1 www.murata-ps.com/support KDC_NMR.D02 Page 4 of 5 NMR Series Isolated 1W Single Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS - 7 PIN SIP 7 Pin SIP Package 0.77 (19.50) Pin Function 1 2 4 6 +VIN -VIN -VOUT +VOUT 0.236 (6.00) TUBE OUTLINE DIMENSIONS NMR100C XYYWWi 0.181 (4.60) 0.141 (3.60) 4 6 2 0.1 (2.54) 1 0.022 (0.55) 0.0178 (0.45) 0.074±0.02 (1.88±0.50) 0.394 (10.00) 0.0118 (0.30) 0.0079 (0.20) 0.05 (1.25) 0.5 (12.70) All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position. Weight: 2.1g All dimensions in inches ±0.01 (mm ±0.25mm) Tube quantity: 25 RECOMMENDED FOOTPRINT DETAILS TEMPERATURE DERATING GRAPH 1.5 )0-&4 All dimensions in inches ±0.01 (mm ±0.25mm) Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED Output Power (W) 1.0 0.5 85°C Safe Operating Area 120°C 0 -40 100 50 0 Ambient Temperature (°C) 150 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_NMR.D02 Page 5 of 5