NML Series www.murata-ps.com Isolated 2W Single Output DC/DC Converters SELECTION GUIDE Nominal Input Output Output Isolation 1 Input Current at Efciency MTTF Order Code Voltage Current Capacitance Voltage Rated Load V V mA mA % pF kHrs NML0505SC 5 5 400 513 78 19 2327 NML0509SC 5 9 222 492 81 27 1393 NML0512SC 5 12 167 479 84 32 832 NML0515SC 5 15 133 481 83 27 481 NML1205SC 12 5 400 207 81 28 716 NML1209SC 12 9 222 198 84 42 593 FEATURES NML1212SC 12 12 167 197 85 46 461 RoHS compliant NML1215SC 12 15 133 197 85 54 328 Single isolated output INPUT CHARACTERISTICS 1kVDC isolation Parameter Conditions Min. Typ. Max. Units Continuous operation, 5V input types 4.5 5.0 5.5 Efciency up to 85% Voltage range V Continuous operation, 12V input types 10.8 12.0 13.2 Wide temperature performance at full 5V input types 33 Reected ripple current mA p-p 2 watt load, 40C to 85C 12V input types 38 3 Power density 2.01W/cm OUTPUT CHARACTERISTICS UL 94V-0 package material Parameter Conditions Min. Typ. Max. Units 2 Footprint from 1.05cm Rated Power TA=-40C to 85C 2.0 W Voltage Set Point Accuracy See tolerance envelope Industry standard pinout Line regulation High VIN to low VIN 1.0 1.2 %/% 5V & 12V input 10% load to rated load, 5V output types 7.0 8.5 10% load to rated load, 9V output types 4.5 5.2 5V, 9V, 12V and 15V output 2 Load Regulation % 10% load to rated load, 12V output types 4.5 5.5 No heatsink required 10% load to rated load, 15V output types 3.7 8.5 NML0505SC, BW=DC to 20MHz 96 Internal SMD construction NML0509SC, BW=DC to 20MHz 67 Fully encapsulated with toroidal magnetics NML0512SC, BW=DC to 20MHz 59 No external components required NML0515SC, BW=DC to 20MHz 53 Ripple and Noise 200 mV p-p NML1205SC, BW=DC to 20MHz 76 MTTF up to 2.3 million hours NML1209SC, BW=DC to 20MHz 63 Custom solutions available NML1212SC, BW=DC to 20MHz 53 NML1215SC, BW=DC to 20MHz 45 Pin compatible with LME & NME series No electrolytic or tantalum capacitors ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units DESCRIPTION Isolation test voltage Flash tested for 1 second 1000 VDC The NML series of DC/DC Converters is particularly Resistance Viso= 500VDC 10 G suited to isolating and/or converting DC power rails. The galvanic isolation allows the device to ABSOLUTE MAXIMUM RATINGS be congured to provide an isolated negative Lead temperature 1.5mm from case for 10 seconds 300C rail in systems where only positive rails exist. Internal power dissipation 805mW The wide temperature range guarantees startup Input voltage VIN, NML05 types 7V from 40C and full 2 watt output at 85C. Pin Input voltage VIN, NML12 types 15V compatibility with the NME and LME ensures ease of upgradeability. 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC NML.E02 Page 1 of 5Typical Load Line NML Series Isolated 2W Single Output DC/DC Converters GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 5V input types 90 Switching frequency kHz 12V input types 90 TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication All output types -40 85 Storage -50 130 C 5V output types 45 Case Temperature above ambient All other output types 36 Cooling Free air convection TEMPERATURE DERATING GRAPH TOLERANCE ENVELOPE +10% 3 +5% +2.5% V NOM -2.5% 85C 2 -7.5% 1 Safe Operating Area 75 100 10 25 50 0 Output Load Current (%) -40 100 150 0 50 The voltage tolerance envelope shows typical load regulation characteristics for this Ambient Temperature (C) 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 specied time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NML 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 specic agency approvals, such as the NML 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 NML 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 specied 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. www.murata-ps.com/support KDC NML.E02 Page 2 of 5 Output Power (W) Output Voltage