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Reduction of power supply EMI emission by switching frequency modulation

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2 Author(s)
Feng Lin ; Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA ; Chen, D.Y.

Electromagnetic interference (EMI) emission is always of grave concern for power electronic circuit designers. Due to rapid switching of high current and high voltage, interference is a serious problem in switching power circuits. Here, the effect of frequency modulation on power supply EMI noise is investigated. Significant reduction of emission is possible with the proposed scheme

Published in:

Power Electronics, IEEE Transactions on  (Volume:9 ,  Issue: 1 )