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KDC_MEV 데이터시트(PDF) 3 Page - Murata Manufacturing Co., Ltd. |
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KDC_MEV 데이터시트(HTML) 3 Page - Murata Manufacturing Co., Ltd. |
3 / 4 page MEV Series 3kVDC Isolated 1W Single Output DC/DC Converters KDC_MEVC.A01 Page 3 of 4 Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com RIPPLE & NOISE CHARACTERISATION METHOD All measurement to be taken with the following components connected to the UUT as detailed below. 50 Ohm coax cable, solder connections one end, BNC plug at the other end. C1 – 1μF X7R multilayer ceramic capacitor rated at minimum 3 x the output voltage of the UUT C2 – 10μF tantalum capacitor rated at minimum 1.5 x the output voltage of the UUT with ESR of less than 100 milliohms at 100 kHz e.g. AVX TPS series. C3 – 100nF multilayer ceramic capacitor, general purpose R1 – 450 Ohm resistor, carbon film, ±1% R2 – 50 Ohm BNC termination T1 – 3T of the coax cable through a ferrite toroid eg Ferroxcube TN32/19/13-3E25 RLOAD – Resistive load at the UUT maximum rating. Connections via twisted wires. Differential Mode Noise Test Schematic OSCILLOSCOPE Y INPUT SUPPLY C1 C2 C3 R1 T1 R2 Input Output DC/DC Converter R LOAD + + - - EFFICIENCY VS LOAD MEV 5V Input Voltage MEV 12V Input Voltage 0 10 20 30 40 50 60 70 80 90 0 10203040 5060708090 100 Load (%) 5V 9V 12V 15V 0 10 20 30 40 50 60 70 80 90 0 10203040 5060708090 100 Load (%) 5V 9V 15V 12V |
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