Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Conference_Location :
Jeju
Print_ISBN :
0-7803-9716-9
DOI :
10.1109/PESC.2006.1711798
