Journal of Zhejiang University-SCIENCE A

, Volume 2, Issue 4, pp 401–405 | Cite as

Study of the effectiveness of anti-phase technique for common mode noise suppression

  • Kchikach M. 
  • Wu Xin
  • Qian Zhao-ming
  • Pang Min-xi
Engineering Sciences


This paper discusses the properties of a novel boost converter with auxiliary anti-phase winding approach resulting in low conducted common code noise level. A simplified equivalent circuit of the proposed boost converter is modeled to analyze its performance and to show the influence of the parasitic winding capacitance, as well as the stray capacitances of the switching waveform nodes into the earth plane. Simulation and experimental results are shown to verify the concept.

Key words

anti-phase technique, EMI (Electromagnetic Interference) model, boost converter 

Document code

CLC number



Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Franki, N. K. Poon, Pong, M. H., 2000. Electromagnetic interference (EMI) due to non conducted coupling paths in Switching Mode Coverter. Proceedings of IPEMC,1: p. 252–257.Google Scholar
  2. Jefferey, P. Mill., 1993, Electro-magnetic interference for reduction in Electronic Systems. PTR rentice Hall, Engelwood Cliffs. New Jersey, p. 22–29.Google Scholar
  3. Nave, M. J., 1991. Power line filter design for Switched mode power supplies. Van Nostrand Reihold, New York.Google Scholar
  4. Paul, C. R., 1992. Introduction to Electromagnetic compatibility. John Wiley.Google Scholar
  5. William, Tim., 1994. EMC for product designers. Butterworth-heinemann Ltd. 1994.Google Scholar
  6. Wu, X., Franki, N. K. Poon, Lee, C. M. et al., 1999. A study of common-mode noise in switching power supply from a balancing viewpoint. Proceedings. of IEEE PEDS99,2: p. 621–625.Google Scholar
  7. Wu, X., Pong, M. H., Lu, Z. Y. et al., 2000. Novel boost PFC with low common mode EMI: modeling and design. Proceedings. of APEC 2000. IEEE,1: p. 178–181.Google Scholar

Copyright information

© Zhejiang University Press 2001

Authors and Affiliations

  • Kchikach M. 
  • Wu Xin
    • 1
  • Qian Zhao-ming
    • 1
  • Pang Min-xi
    • 2
  1. 1.College of Electrical EngineeringZhejiang UniversityHangzhouChina
  2. 2.Department of Electrical & Electronic EngineeringHong Kong UniversityChina

Personalised recommendations