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Isolated DC-DC Converter Design Considerations Slide 9

The power source for the DC/DC converter is not an ideal DC voltage source, and the connecting wires will introduce additional impedance. When the magnitude of total source impedance is equal to that of the converter input impedance, and the phase of these two impedances is 180° off, The sum of ZS and ZIN is equal to zero, and the system becomes unstable.

PTM Published on: 2013-01-30