High Frequency Common Mode EMI Noise Suppression for Switching Converters by Impedance Control

Author

Henglin Chen ; Limin Feng ; Wei Chen ; Zhaoming Qian

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., Hangzhou

fYear

2006

fDate

18-22 June 2006

Firstpage

1

Lastpage

2

Abstract

The EMI noise source impedance of an SMPS is essential in EMC design, and because DM noise is easy to identify and control but CM noise is still hard to characterize, more concerns are with CM noise. This paper deals with the modeling of CM noise source and introduces a simple way to suppress high frequency common mode EMI noise for switching mode power converters by means of common mode noise source impedance control. Experiments and EMI test results are presented to validate the CM noise suppression method

Keywords

electric impedance; electromagnetic interference; interference suppression; switched mode power supplies; switching convertors; CM noise; DM noise; EMC; SMPS; high frequency common mode EMI noise suppression; impedance control; power converters; switching converters; Circuit noise; Earth; Electromagnetic interference; Filters; Frequency conversion; Frequency measurement; Impedance; Noise measurement; Parasitic capacitance; Switching converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE

Conference_Location

Jeju

ISSN

0275-9306

Print_ISBN

0-7803-9716-9

Type

conf

DOI

10.1109/PESC.2006.1711798

Filename

1711798