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MEE1S1215DC Datasheet(PDF) 5 Page - Murata Power Solutions Inc. |
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MEE1S1215DC Datasheet(HTML) 5 Page - Murata Power Solutions Inc. |
5 / 7 page MEE1 Series Isolated 1W Single Output DC/DC Converters KDC_MEE1.C01 Page 5 of 7 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 1.25 times 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 + + - - Start-up time Start-up time μs μs MEE1S0303XC 355 MEE1S1209XC 818 MEE1S0305XC 622 MEE1S1212XC 1285 MEE1S0309XC 1542 MEE1S1215XC 2052 MEE1S0312XC 2410 MEE1S1505XC 260 MEE1S0315XC 3346 MEE1S1509XC 642 MEE1S0503XC 334 MEE1S1512XC 993 MEE1S0505XC 402 MEE1S1515XC 1574 MEE1S0509XC 1316 MEE1S2405XC 221 MEE1S0512XC 1776 MEE1S2409XC 541 MEE1S0515XC 2232 MEE1S2412XC 860 MEE1S1205XC 285 MEE1S2415XC 1049 |
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