Prediction of the Conducted EMI from DC-DC Switched-Mode Power Converters
نویسندگان
چکیده
This paper presents theoretical estimation of the conducted electromagnetic emissions from a SMPS, based on Fourier analysis. The theory is applied to a buck converter. The comparison between the theoretically estimated and measured EMI shows that the CM EMI was well predicted. Up to 3 MHz the measured DM noise was much lower than the predicted one, which could be because of unknown DM noise source impedance. Further research is needed to find out whether a proper model of the noise source impedance can improve the accuracy of the DM noise prediction.
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