A frequency-domain study on the effect of DC-link decoupling capacitors

  title={A frequency-domain study on the effect of DC-link decoupling capacitors},
  author={Zheng Chen and Dushan Boroyevich and Paolo Mattavelli and Khai D. T. Ngo},
  journal={2013 IEEE Energy Conversion Congress and Exposition},
DC-link decoupling capacitors are generally placed near the power switches in the converter to minimize the parasitic ringing and voltage overshoot on the devices. In this paper, the influence of decoupling capacitors on the turn-off parasitic ringing of power MOSFETs is studied in the frequency domain based on a small-signal modeling approach. This new angle helps explain the effect of these capacitors in a simpler and more straightforward way compared to the traditional time-domain analysis… CONTINUE READING
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