NMXSO Series www.murata-ps.com Isolated 5W Regulated Single & Dual Output DC/DC Converters SELECTION GUIDE Order Code V V A % pF W kHrs Recommended Alternative NMXS0505SOC 5 5 1.0 65 37.4 5.0 811 Contact Murata NMXS1205SOC 12 5 1.0 65 46.6 5.0 177 Contact Murata FEATURES NMXD0505SOC 5 5 0.5 65 30.5 5.0 565 BWR-5/700-D5A-C NMXD0515SOC 5 15 0.2 65 36.6 6.0 83 NCS6D1215C Single or dual output NMXD1205SOC 12 5 0.5 65 40.5 5.0 162 BWR-5/900-D12A-C 1kVDC isolation Hi Pot Test NMXS0515SOC 5 15 0.4 65 33.3 6.0 157 UWR-15/530-D5A-C Pin compatible with NMXU series NMXS1215SOC 12 15 0.4 65 60.0 6.0 93 UWR-15/665-D12A-C NMXD1215SOC 12 15 0.2 65 65.7 6.0 61 NCS6D1215C UL 94V-0 package material NMXD0512SOC Contact Murata Obsolete Industry standard pinout NMXD1212SOC NCS6D1212C Obsolete NMXS0512SOC Obsolete Contact Murata 5V & 12V input Obsolete NMXS1212SOC NCS6S1212C 5V & 15V output 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 Short circuit protected additional external capacitance for reliable start up. Internal SMD construction INPUT CHARACTERISTICS Fully encapsulated with toroidal magnetics Parameter Conditions Min. Typ. Max. Units Output regulation 0.5% Continuous operation, 5V input types 4.5 5.0 5.5 Voltage range V Continuous operation, 12V input types 10.8 12.0 13.2 PCB mounting Reected ripple voltage BW=DC to 20MHz, all output types 150 mV DESCRIPTION OUTPUT CHARACTERISTICS The NMXSO series of DC/DC converters is Parameter Conditions Min. Typ. Max. Units particularly suited to isolating and/or converting Rated power TA= 0C to 70C 5.0 W DC power rails. The galvanic isolation allows the Voltage output accuracy 3 % device to be congured to provide an isolated Line regulation High VIN to low VIN 0.5 % negative rail in systems where only positive rails Load Regulation 10% load to rated load 0.5 % exist. The devices are particularly suited for use Ripple and Noise BW=DC to 20MHz, all output types 150 mV p-p in distributed power systems where there is low variation in the bus voltage levels. ABSOLUTE MAXIMUM RATINGS 2 Short-circuit protection 15 seconds Lead temperature 1.5mm from case for 10 seconds 300C Input voltage VIN, NMXSO05 types 7V Input voltage VIN, NMXSO12 types 15V 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. 2. Supply voltage must be disconnected at the end of the short circuit duration. 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 NMXSO.H01 Page 1 of 3 Nominal Input Voltage Output Voltage Output Current Efciency Typ. Isolation Capacitance Output Power 1 MTTFNMXSO Series Isolated 5W Regulated Single & Dual Output DC/DC Converters ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 1000 VDC Resistance Viso= 1000VDC 1 G GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Switching frequency All input types 70 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication All output types 0 70 Storage -55 100 C Case Temperature above ambient All output types 30 Cooling Free air convection RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300C for 10 seconds. The pin termination nish on this product series is Matte Tin over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs 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 NMXSO 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 NMXSO 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 NMXSO 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 NMXSO.H01 Page 2 of 3