Parasitic capacitance cancellation in filter inductors
This paper introduces a technique for improving the high-frequency performance of filter inductors and common-mode chokes by cancelling out the effects of parasitic capacitance. This technique uses additional passive components to inject a compensation current that cancels the parasitic current, the...
| 主要な著者: | , |
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| その他の著者: | |
| フォーマット: | 論文 |
| 言語: | en_US |
| 出版事項: |
Institute of Electrical and Electronics Engineers (IEEE)
2014
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| オンライン･アクセス: | http://hdl.handle.net/1721.1/86913 https://orcid.org/0000-0002-0746-6191 |
| 要約: | This paper introduces a technique for improving the high-frequency performance of filter inductors and common-mode chokes by cancelling out the effects of parasitic capacitance. This technique uses additional passive components to inject a compensation current that cancels the parasitic current, thereby improving high-frequency filtering performance. Two implementation approaches for this technique are introduced. The first implementation achieves cancellation using an additional small winding on the filter inductor and a small capacitor. This approach is effective where very high coupling of the windings can be achieved or where only moderate performance improvements are required. The second implementation utilizes a small radio frequency transformer in parallel with the filter inductor to inject cancellation currents from the compensation capacitor. This technique requires an additional component (the transformer), but can provide a high degree of cancellation. Experimental results confirm the theory in both implementations. |
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