EMI modeling of switching circuits via augmented equivalents and measured data

This paper presents an innovative modeling technique for the prediction of the conducted emissions generated by switching circuits. The proposed approach accounts for the inherent time-varying nature of the above class of circuits by means of an augmented impedance or admittance one-port representation estimated from real measurements. The above interpretation yields to an improved accuracy with respect to the state-of-the-art modeling approaches based on linear time-invariant surrogates and allows for the full characterization of the conducted disturbances via a well-defined modeling procedure. The strength of the method is verified on a real dc-dc boost converter.