New Oscillation Circuit Discovered in Switching-Mode Power Supplies

  title={New Oscillation Circuit Discovered in Switching-Mode Power Supplies},
  author={T. Fujihira and Tsuyoshi Yamada and Y. Minoya and Tetsuro Kobayashi and Yasuo Niimura and T. Kuboyama and Ryoji Araki and Hiroyuki Ota},
  journal={2008 20th International Symposium on Power Semiconductor Devices and IC's},
A new oscillation circuit has been discovered in switching-mode power supply (SMPS) circuits and is presented for the first time. The new oscillation circuit naturally exists in various SMPS, generates electric oscillation, and, as a result, causes high radiation noise. Small-signal analysis of the new oscillation circuit model was executed and analytical solutions of the oscillation criterion have been derived. Experimental measurements of the oscillation frequency in various circuits showed… CONTINUE READING


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