PARASITIC CAPACITANCE CANCELLATION OF INTEGRATED CM FILTER USING BI-DIRECTIONAL COUPLING GROUND TECHNIQUE | Zendy

HuiFen Huang | Zendy; Mao Ye | Zendy

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PARASITIC CAPACITANCE CANCELLATION OF INTEGRATED CM FILTER USING BI-DIRECTIONAL COUPLING GROUND TECHNIQUE

Author(s) -

HuiFen Huang,

Mao Ye

Publication year - 2013

Publication title -

progress in electromagnetics research b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.208

H-Index - 47

ISSN - 1937-6472

DOI - 10.2528/pierb13031508

Subject(s) - capacitance , coupling (piping) , parasitic capacitance , filter (signal processing) , acoustics , materials science , optoelectronics , computer science , electrical engineering , physics , engineering , composite material , electrode , quantum mechanics

This paper introduces a method for canceling the parasitic capacitance of integrated common mode (CM) fllter by optimizing the layout of ground winding. Firstly, the CM fllter with positive or negative coupling between the ground and inductor winding is researched, respectively. Then, the two coupling polarizes are combined to form the bi-directional coupling, simulation and measured results show bi-directional coupling ground can efiectively improve the high frequency (HF) flltering performance. The equivalent circuits are given to demonstrate the cancellation mechanism, and modelling is derived for the design of ground winding. To further validate the application of proposed technique, CM noise and input/output signals for PFC (Power Factor Correction) converter with bi-directional coupling ground CM fllter are simulated. The noise spectrums show conductive interference at high frequencies is efiectively suppressed and meets the required electromagnetic interference (EMI) standard.

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