Thank you very much for your reply.May I know what do you called that valley in the PWM signal? Is there a technical term on that?It’s what it does when it goes into discontinuous mode.
When no current is flowing in the inductor it rings at the resonant frequency of the inductor and the output capacitance of the MOSFET.
Thank you very much. Now I understand the technical term on that.Dead time.
Thank you very much for your reply. It seems I have found the best technical term in the picture above. It is called Valley Switching or Quasiresonant Mode.I would have only used the term "dead time" for a synchronous or half bridge converter where there are two MOSFETs, switched alternately; the dead time being the time during which neither is on.
No, if that were the case, it would switch at the positive peak, so that the amount of stored energy in the parasitic capacitance was at its minimum.Thank you very much for your reply. It seems I have found the best technical term in the picture above. It is called Valley Switching or Quasiresonant Mode.
here it is.
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