NMH Series www.murata-ps.com Isolated 2W Dual Output DC/DC Converters SELECTION GUIDE Order Code Nominal Input Voltage V No electrolytic or tantalum capacitors NMH0505DC NMH0509DC NMH0512DC NMH0515DC NMH0505SC NMH0509SC NMH0512SC NMH0515SC NMH1205DC NMH1209DC NMH1212DC NMH1215DC NMH1205SC NMH1209SC NMH1212SC NMH1215SC NMH2405DC NMH2409DC NMH2412DC NMH2415DC NMH2405SC NMH2409SC NMH2412SC NMH2415SC NMH4805DC NMH4809DC NMH4812DC NMH4815DC NMH4805SC NMH4809SC NMH4812SC NMH4815SC DESCRIPTION INPUT CHARACTERISTICS The NMH series of industrial temperature range DC/DC converters are the standard buliding blocks for on-board point-of-use power systems. They are ideally suited for providing dual rail supplies on single rail boards with the added benefit of galvanic isolation to reduce circuit noise. All of the rated power may be drawn from a single pin provided the total load does not exceed 2 watts. Parameter FEATURES RoHS compliant Efficiency up to 86% Power density up to 1.44W/cm3 Wide temperature performance at full 2 watt load, –40°C to 85°C Dual output from a single input rail UL 94V-0 package material No heatsink required Footprint from 1.46cm2 Industry standard pinout Power sharing on output 1kVDC isolation 5V, 12V, 24V & 48V input 5V, 9V, 12V and 15V output Internal SMD construction Fully encapsulated with toroidal magnetics No external components required MTTF up to 1.5 million hours Pin compatibility with the NMA 1 watt series ensures minimal effort in upgrading distributed power systems. 5 5 5 5 5 5 5 5 12 12 12 12 12 12 12 12 24 24 24 24 24 24 24 24 48 48 48 48 48 48 48 48 Voltage range Reflected ripple current V mA Input Current at Rated Load 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 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 500 494 488 476 500 494 488 476 208 201 198 198 208 201 198 198 103 98 97 97 103 98 97 97 51 51 49 49 51 51 49 49 Output Voltage Output Current Efficiency % 80 81 82 84 80 81 82 84 80 83 84 84 80 83 84 84 81 85 86 86 81 85 86 86 82 82 85 85 82 82 85 85 Isolation MTTF1 Package Capacitance Style pF kHrs 24 28 30 33 24 28 30 33 35 55 63 66 35 55 63 66 41 75 95 104 41 75 95 104 45 74 90 112 45 74 90 112 1574 663 338 187 1574 663 338 187 490 343 229 148 490 343 229 148 318 249 183 127 318 249 183 127 235 195 152 112 235 195 152 112 DIP SIP DIP SIP DIP SIP DIP SIP Conditions Min. Typ. Max. Units Continuous operation, 5V input types Continuous operation, 12V input types Continuous operation, 24V input types Continuous operation, 48V input types 5V input types 12V input types 24V input types 48V input types 4.5 10.8 21.6 43.2 5 12 24 48 50 70 130 200 5.5 13.2 26.4 52.8 V mA p-p 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. 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_NMH.E03 Page 1 of 6 NMH Series Isolated 2W Dual Output DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Rated Power1 Voltage Set Point Accuracy TA=-40°C to 85°C NMH0505DC/SC All other types High VIN to low VIN 10% load to rated load, 5V output types 10% load to rated load, 9V output types 10% load to rated load, 12V output types 10% load to rated load, 15V output types BW=DC to 20MHz, 5V output types BW=DC to 20MHz, 9V output types BW=DC to 20MHz, 12V output types BW=DC to 20MHz, 15V output types Line regulation Load Regulation Ripple and Noise Min. Typ. Max. Units W 1.0 5 2 7.5 5 1.2 10 3 10 150 100 80 70 200 150 150 150 mV p-p Max. Units -5 -5 % %/% % ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds Internal power dissipation Input voltage VIN, NMH05 types Input voltage VIN, NMH12 types Input voltage VIN, NMH24 types Input voltage VIN, NMH48 types 300°C 300mW 7V 15V 28V 54V ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Isolation test voltage Resistance Flash tested for 1 second Viso= 500V 1000 1 10 Parameter Conditions Min. Typ. Switching frequency 5V input types 12V input types 24V & 48V input types VDC GΩ GENERAL CHARACTERISTICS Max. 95 90 80 Units kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage All output types -40 -50 Case Temperature above ambient Cooling 5V output types 12V output types Free air convection Output Voltage Output Power (W) 85°C Safe Operating Area +5% VNOM Units °C 100 50 0 Ambient Temperature (°C) 150 Typical L oad Line +2.5% -2.5% -7.5% 10 0 -40 85 130 TOLERANCE ENVELOPE +10% 3 1 Max. 30 25 TEMPERATURE DERATING GRAPH 2 Typ. 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. 1. See derating graph. www.murata-ps.com/support KDC_NMH.E03 Page 2 of 6 NMH Series Isolated 2W 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 NMH 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 NMH 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 NMH 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 300°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%. 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. NMH0505SC NMH0509SC NMH0512SC NMH0515SC NMH1205SC NMH1209SC NMH1212SC NMH1215SC Start-up time μs 1072 2481 3546 5380 672 1152 1580 3150 NMH2405SC NMH2409SC NMH2412SC NMH2415SC NMH4805SC NMH4809SC NMH4812SC NMH4815SC Start-up time μs 1064 1544 4398 4230 966 1220 2822 4275 Typical Start-Up Wave Form www.murata-ps.com/support KDC_NMH.E03 Page 3 of 6 NMH Series Isolated 2W Dual Output DC/DC Converters APPLICATION NOTES (continued) 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 R2 T1 + Y INPUT Output - R LOAD 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: Ceramic chip capacitors are recommended. It is required that the ESR (Equivalent Series Resistance) should be as low as possible, X7R 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 Power Source Order Code L (μH) NMH0505XC NMH0509XC NMH0512XC NMH0515XC NMH1205XC NMH1209XC NMH1212XC NMH1215XC NMH2405XC NMH2409XC NMH2412XC NMH2415XC NMH4805XC NMH4809XC NMH4812XC NMH4815XC 47 47 150 100 47 47 150 100 47 47 150 100 47 47 150 100 DC C Load DC Inductor Order Codes SMD Through Hole 82473C 11R473C 82473C 11R473C 82154C 11R154C 82104C 11R104C 82473C 11R473C 82473C 11R473C 82154C 11R154C 82104C 11R104C 82473C 11R473C 82473C 11R473C 82154C 11R154C 82104C 11R104C 82473C 11R473C 82473C 11R473C 82154C 11R154C 82104C 11R104C C (μF) 4.7 2.2 3.3 3.3 4.7 2.2 3.3 3.3 4.7 2.2 3.3 3.3 4.7 2.2 3.3 3.3 Product specification for MPS inductors can be found at: 1100R Series (Through Hole) http://www.murata-ps.com/data/magnetics/kmp_1100r.pdf 8200 Series (SMD) http://www.murata-ps.com/data/magnetics/kmp_8200c.pdf www.murata-ps.com/support KDC_NMH.E03 Page 4 of 6 NMH Series Isolated 2W Dual Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS - 14 PIN DIP SIP package DIP package 0.77 (19.50) 0.39 (9.80) 0.77 (19.50) NMH0505DC 0.295 (7.50) XYYWWi 0.4 (10.00) 0.303 (7.70) NMH0505SC XYYWWi 1 0.181 (4.60) 0.142 (3.60) 0.1 (2.54) 0.022 (0.55) 0.0178 (0.45) 0.043 (1.09) 1 14 11 9 8 0.0118 (0.30) 0.0078 (0.20) 0.1 (2.54) 0.022 (0.55) 0.0178 (0.45) 0.079 (2.00) 0.0118 (0.30) 0.0078 (0.20) 0.05 (1.25) Function 1 -VIN 7 NC 8 OV 9 +VOUT 11 -VOUT 14 +VIN PIN CONNECTIONS - 7 PIN SIP 4 5 6 7 0.3 (7.62) 0.084 (2.13) 0.181 (4.60) 0.142 (3.60) 2 0.022 (0.55) 0.0178 (0.45) Pin 0.5 (12.70) Pin Function 1 +VIN 2 -VIN 4 -VOUT 5 OV 6 +VOUT 0.6 (15.24) 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: 2.85g (DIP) 2.76g (SIP) www.murata-ps.com/support KDC_NMH.E03 Page 5 of 6 NMH Series Isolated 2W Dual Output DC/DC Converters PACKAGE SPECIFICATIONS (continued) RECOMMENDED FOOTPRINT DETAILS 14 Pin DIP Package 7 Pin SIP Package 0.045 (1.15) Ø 0.039 (1.00) 5 HOLES 0.045 (1.15) Ø 0.039 (1.00) 5 HOLES 0.00394 (0.1) 0.00394 (0.1 0.1 (2.54) 0.1 (2.54) 0.1 (2.54) 0.1 (2.54) TUBE OUTLINE DIMENSIONS 7 Pin SIP Tube 14 Pin DIP Tube Unless otherwise stated all dimensions in inches (mm) ±0.5mm. Tube length (14 Pin DIP) : 20.47 (520mm ±2mm). Tube length (7 Pin SIP) : 20.47 (520mm ±2mm). 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_NMH.E03 Page 6 of 6