Title :
A study of common mode noise in switching power supply from a current balancing viewpoint
Author :
Xin, Wu ; Poon, Franki N K ; Lee, C.M. ; Pong, M.H. ; Qian, Zhaoming
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
Common mode noise current is a major source of EMI in switching mode power supplies. The generation mechanism is studied from a current balancing point of view in this paper. A proper understanding of common mode noise provides a systematic approach to solve common mode interference in SMPS. Impedance balance and noise source balance analysis of a boost converter are presented. Simulation and experiment results are shown to verify this concept
Keywords :
DC-DC power convertors; electric impedance; electromagnetic interference; switched mode power supplies; EMI; SMPS; boost converter; common mode interference; common mode noise current; current balancing; generation mechanism; impedance balance analysis; noise source balance analysis; switching mode power supplies; Capacitance; Capacitors; Circuit noise; Current supplies; Earth; Inductors; Noise reduction; Power supplies; Semiconductor device noise; Switched-mode power supply;
Conference_Titel :
Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on
Print_ISBN :
0-7803-5769-8
DOI :
10.1109/PEDS.1999.792729
