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Switching operations of the DC-DC converter is the major source of electromagnetic emission (EMI) of power management circuits. In this paper, a design guideline for inductive snubber circuit is developed to reduce EMI of DC-DC converter. A switching loop of the DC-DC converter is modeled and ringing noise on the switching node is analyzed. Circuit schematic simulation is performed to verify the effectiveness...
In this paper, the EMI problem of the DC-DC converter is discussed. The power spectrums of the DC-DC converter's nodes are analyzed and the noise scanner method is used to prove that the switching node of the DC-DC converter is the dominant source of EMI. To reduce EMI of DC-DC converters, frequency hopping technique can be applied. The DC-DC converter with frequency hopping technique is fabricated...
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