NMD Series www.murata-ps.com Isolated 1W Twin Output DC-DC Converters SELECTION GUIDE Package Order Code Style V V V mA mA % kHrs NMD050505SC 5 5 5 100 100 70 1615 SIP NMD050512SC 5 5 12 100 42 80 339 SIP NMD050515SC 5 5 15 100 34 80 187 SIP Recommended FEATURES Alternative n Twin independent outputs NMD050503DC 5 5 3.3 100 152 70 1615 DIP Contact Murata NMD050512DC 5 5 12 100 42 80 339 DIP NMD050512SC n Input/output isolation 1kVDC Hi Pot Test NMD050515DC 5 5 15 100 34 80 187 DIP NMD050515SC n Output/output isolation 1kVDC Hi Pot Test NMD050503SC 5 5 3.3 100 152 70 1615 SIP Contact Murata NMD120505DC 12 5 5 100 100 70 489 DIP Contact Murata n Power sharing on outputs NMD120512DC 12 5 12 100 42 80 229 DIP Contact Murata n Efficiency to 80% NMD120505SC 12 5 5 100 100 70 489 SIP Contact Murata NMD050505DC 5 5 5 100 100 70 1615 DIP NMD050505SC n 5V input NMD050509DC 5 5 9 100 56 80 669 DIP Contact Murata n One 5V output (V1) NMD050509SC 5 5 9 100 56 80 669 SIP Contact Murata NMD120509DC 12 5 9 100 56 80 343 DIP Contact Murata n 5V, 12V and 15V output (V2) NMD120515DC 12 5 15 100 34 80 148 DIP Contact Murata n Internal SMD construction NMD120509SC 12 5 9 100 56 80 343 SIP Contact Murata n No external components required NMD120512SC 12 5 12 100 42 80 229 SIP Contact Murata NMD120515SC 12 5 15 100 34 80 148 SIP Contact Murata n MTTF up to 1.6 million hours When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the n Custom solutions available additional external capacitance for reliable start up. DESCRIPTION INPUT CHARACTERISTICS The NMD series of DC-DC converters are ideally Parameter Conditions Min. Typ. Max. Units suited to applications where a potential difference Voltage range Continuous operation, 5V input types 4.5 5.0 5.5 V exists between loads, e.g. motor control circuits. The twin outputs offer cost and space savings OUTPUT CHARACTERISTICS by consolidating two DC-DC converters into one Parameter Conditions Min. Typ. Max. Units package. All of the rated power may be drawn Rated power TA=0C to 125C, see derating graph 1.0 W from a single output provided the total load does Voltage set point accuracy See tolerance envelope not exceed 1 watt. Line regulation High VIN to Low VIN All output types 1.0 1.2 %/% 10% load to rated load, 5V output types 15 Load regulation 10% load to rated load, 12V output types 10 % 10% load to rated load, 15V output types 10 Ripple and noise BW=DC to 20MHz, all output types 75 mV p-p ABSOLUTE MAXIMUM RATINGS 2 Short-circuit protection 1 second Lead temperature 1.5mm from case for 10 seconds 260C Input voltage VIN, NMD05 types 7V 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. For full details go to 2. Supply voltage must be disconnected at the end of the short circuit duration. www.murata-ps.com/rohs All specifications typical at T A=25C, nominal input voltage and rated output current unless otherwise specified. www.murata-ps.com/support KDC NMD.F01 Page 1 of 4 Nominal Input Voltage Output Voltage 1 Output Voltage 2 Output Current 1 Output Current 2 Efficiency 1 MTTFTypical Load Line NMD Series Isolated 1W Twin Output DC-DC Converters ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 1000 VDC Resistance Viso= 500VDC 1 G GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Switching frequency All input types 100 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specification All output types 0 70 C Storage -55 150 Cooling Free air convection TEMPERATURE DERATING GRAPH TOLERANCE ENVELOPE 1.5 +10% +5% 70C +2.5% 1.0 V NOM -2.5% -7.5% 0.5 Safe Operating Area 125C 0 75 100 0 50 100 150 10 25 50 Ambient Temperature (C) Output Load Current (%) 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 NMD 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 NMD 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 NMD 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 recognised 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 260C 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 www.murata-ps.com/support KDC NMD.F01 Page 2 of 4 Output Power (W) Output Voltage