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MEV3 Datasheet(PDF) 3 Page - Murata Power Solutions Inc. |
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MEV3 Datasheet(HTML) 3 Page - Murata Power Solutions Inc. |
3 / 5 page MEV3 Series 3kVDC Isolated 3W Single Output DC/DC Converters KDC_MEV3C.A01 Page 3 of 5 Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com 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 + + - - Start-up time μs MEV3S0505SC 165 MEV3S0509SC 300 MEV3S0512SC 650 MEV3S0515SC 1200 MEV3S1205SC 75 MEV3S1209SC 200 MEV3S1212SC 350 MEV3S1215SC 410 Typical Start-Up Wave Form |
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