Because conventional switching converters are usually using unbalanced circuit topologies, parasitic capacitance between the drain of an MOS-FET and the frame ground through its heat sink may generate the common-mode conducted noise. We proposed a concept of balanced switching converter circuit, which is an effective way to reduce the common-mode conducted noise of a switching converter by current cancellation. In this paper, the path of the noise current in a balanced buck-boost converter circuit is investigated using a current probe. By measuring current waveforms and frequency spectra of the parasitic capacitances and the frame ground line, the mechanism of the common-mode noise reduction by current cancellation is clarified.
|ホスト出版物のタイトル||Conference Proceedings - IPEMC 2004: 4th International Power Electronics and Motion Control Conference|
|出版ステータス||出版済み - 2004|
|イベント||Conference Proceedings - IPEMC 2004: 4th International Power Electronics and Motion Control Conference - Xi'an, 中国|
継続期間: 8 14 2004 → 8 16 2004
|その他||Conference Proceedings - IPEMC 2004: 4th International Power Electronics and Motion Control Conference|
|Period||8/14/04 → 8/16/04|
All Science Journal Classification (ASJC) codes