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Reduction of Common Mode EMI noise in microstrip line based commutation paths designed for sub-nH loop inductance

  • We present a numerical and experimental design study for reducing conducted common mode noise for frequencies below 10MHz generated in switching cells comprising sub-nH commutation loops. Compared to conventional methods of adding external gate resistors our approach does not degrade efficiency. A parallel plate loop design (characterized by a minimum loop inductance and small board area usage) is found suboptimal in terms of conducted EMI compared to a micro-strip line loop geometry. The net ground impedance rather than the net ground inductance is found to mainly contribute to the observed EMI noise.

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Metadaten
Author:Norbert SeligerORCiD, Eduard Dechant, Christian Brendel, Ralph Kennel
Parent Title (English):CIPS 2020 - 11th International Conference on Integrated Power Electronics Systems, Berlin - Virtual Meeting
Document Type:Conference Proceeding
Language:English
Publication Year:2020
Tag:switching cell
Page Number:6
faculties / departments:Fakultät für Ingenieurwissenschaften