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MEV1S1215SC Datasheet(PDF) 5 Page - Murata Power Solutions Inc. |
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MEV1S1215SC Datasheet(HTML) 5 Page - Murata Power Solutions Inc. |
5 / 10 page MEV1 Series 3kVDC Isolated 1W Single & Dual Output DC/DC Converters KDC_MEV1.F05 Page 5 of 10 www.murata-ps.com/support 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. 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 C2 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 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 OSCILLOSCOPE Y INPUT SUPPLY C1 C2 C3 R1 T1 R2 Input Output DC/DC Converter R LOAD + + - - Typical Start-Up Wave Form Start-up time Start-up time μs μs MEV1x0505xC 585 MEV1x1512xC 3045 MEV1x0509xC 1550 MEV1x1515xC 4445 MEV1x0512xC 2700 MEV1x2405xC 440 MEV1x0515xC 4320 MEV1x2409xC 4355 MEV1x1205xC 605 MEV1x2412xC 1855 MEV1x1209xC 1750 MEV1x2415xC 2930 MEV1x1212xC 3000 MEV1x4805SC 580 MEV1x1215xC 4800 MEV1x4809SC 1320 MEV1x1505xC 660 MEV1x4812SC 2075 MEV1x1509xC 1720 MEV1x4815SC 3235 |
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