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NTE0315MC Datasheet(PDF) 2 Page - Murata Manufacturing Co., Ltd. |
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NTE0315MC Datasheet(HTML) 2 Page - Murata Manufacturing Co., Ltd. |
2 / 6 page NTE Series Isolated 1W Single Output SM DC/DC Converters KDC_NTE.K04 Page 2 of 6 www.murata-ps.com/support OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Rated power TA=-40°C to 85°C 1.0 W Voltage set point accuracy See tolerance envelope Line regulation High VIN to low VIN 1.0 1.2 %/% Load regulation1 10% load to rated load, 03XXMC, 0503MC, 0505MEC 10 14 % 10% load to rated load, 0505MC & 1205MC 12.8 15 10% load to rated load, 0506MC 9.2 10 10% load to rated load, 0509MC & 1209MC 8.3 9.0 10% load to rated load, 0512MC & 1212MC 6.8 7.5 10% load to rated load, 0515MC & 1215MC 6.3 7.0 Ripple and noise BW=DC to 20MHz, 03XXMC, 0503MC, 0505MEC 40 60 mV p-p BW=DC to 20MHz, 0505MC & 1205MC 62 85 BW=DC to 20MHz, 0506MC 103 170 BW=DC to 20MHz, 0509MC & 1209MC 49 75 BW=DC to 20MHz, 0512MC & 1212MC 39 65 BW=DC to 20MHz, 0515MC & 1215MC 38 76 TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specification All output types -40 85 °C Storage -55 125 Case temperature rise above ambient 0305MC, 0309MC, 0315MC 25 0303MC, 0312MC, 0503MC, 0505MEC, 0509MC, 0512MC, 0515MC 30 0505MC, 1205MC 43 1209MC, 1212MC, 1215MC 40 Cooling Free air convection 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 NTE 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 NTE 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 NTE 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. 1. 12V input types have typically 3% less load regulation change. TEMPERATURE DERATING GRAPH 150 100 50 0 -40 0 0.5 1.0 1.5 Safe Operating Area 85°C Ambient Temperature (°C) |
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