Widely Applicable Floating Power Supply for Gate Drivers Using Capacitive Isolation

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  • Omura Tessen
    Graduate School of Science and Engineering, Chiba University
  • Natori Kenji
    Graduate School of Science and Engineering, Chiba University
  • Sato Yukihiko
    Graduate School of Science and Engineering, Chiba University

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  • 多種の変換器トポロジに適用可能なキャパシタ絶縁によるゲート駆動用フローティング電源
  • タシュ ノ ヘンカンキ トポロジ ニ テキヨウ カノウ ナ キャパシタ ゼツエン ニ ヨル ゲート クドウヨウ フローティング デンゲン

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<p>Many techniques have been proposed as power supply methods for high-side gate drivers. However, most techniques that do not depend on the topology of the main circuit have drawbacks related to the size and cost. This paper proposes a novel floating power supply based on capacitive isolation. The proposed circuit is designed to operate independently of the main circuit, and it is cheaper and smaller than conventional circuits. The proposed method is applied to a diode-clamped multilevel topology and is validated by experiments.</p>

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