Implementation of a MOSFET-based active differential mode EMI filter in DC/DC converter

Author

Yuehong Yang ; Xinli Chang ; Wenjie Chen ; Xu Yang

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

1345

Lastpage

1348

Abstract

A switching mode power supply will easily cause serious electro-magnetic interference (EMI) because of the high frequency operation of the power devices. The traditional passive EMI filter (PEF) is bulky and also not efficient in low frequency range. A differential mode active EMI filter (AEF) for DC/DC converter is proposed in this paper. With the analysis and modeling of the full bridge DC/DC converter, a voltage feedback differential mode active EMI filter based on MOSFET is established. The experimental result shows that this AEF has a good differential mode noise attenuation quality.

Keywords

DC-DC power convertors; active filters; electromagnetic interference; power MOSFET; MOSFET-based active differential mode EMI filter; differential mode AEF; differential mode noise attenuation quality; electromagnetic interference; full-bridge DC-DC converter; power device high-frequency operation; switching mode power supply; voltage feedback differential mode active EMI filter; Active filters; Electromagnetic interference; MOSFET; Noise; Power electronics; Power supplies; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7038058

Filename

7038058