Design and implementation of planar EMI filter under the condition of impedance mismatching

Author

Song Zheng ; Shishan Wang ; Bor-Lin Li

Author_Institution

Jiangsu Key Lab. of New Energy Generation & Power Conversion, Nanjing, China

fYear

2015

fDate

26-29 May 2015

Firstpage

136

Lastpage

139

Abstract

A novel integration structure of EMI filter based on multilayer ceramic is proposed in this paper. The inductors and capacitors of the new structure can be designed separately, which is advantageous to manufacture. Besides, the Insertion Loss(IL) is usually measured under the condition of the source impedance and load impedance are both 50Ω, which is different from the actual situation. In the process of design novel EMI filter, the noise impedance is taken into consideration in this paper. And, the prototype is made and applied to the 100w switching power supply. The effectiveness of the developed EMI filter is verified.

Keywords

electromagnetic interference; impedance matching; multilayers; power filters; switched mode power supplies; capacitors; impedance mismatching; inductors; insertion loss; load impedance; multilayer ceramic; noise impedance; planar EMI filter; power 100 W; resistance 50 ohm; source impedance; switching power supply; Capacitors; Electromagnetic interference; Filtering theory; Impedance; Inductance; Inductors; Noise; EMI filter; impedance mismatching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (APEMC), 2015 Asia-Pacific Symposium on

Conference_Location

Taipei

Print_ISBN

978-1-4799-6668-4

Type

conf

DOI

10.1109/APEMC.2015.7175234

Filename

7175234