JP5287294B2 - 半導体保護回路 - Google Patents
半導体保護回路 Download PDFInfo
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- JP5287294B2 JP5287294B2 JP2009016607A JP2009016607A JP5287294B2 JP 5287294 B2 JP5287294 B2 JP 5287294B2 JP 2009016607 A JP2009016607 A JP 2009016607A JP 2009016607 A JP2009016607 A JP 2009016607A JP 5287294 B2 JP5287294 B2 JP 5287294B2
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- voltage
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- semiconductor element
- resistor
- saturable reactor
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- Power Conversion In General (AREA)
- Electronic Switches (AREA)
Description
したがって、この発明の課題は、電圧クランプ素子を用いずに素子の過電圧保護を可能とすることにある。
L1・・・可飽和リアクトル C1・・・コンデンサ
ZD・・・電圧クランプ素子
Claims (3)
- 電圧駆動型半導体素子のターンオフ時のサージによる過電圧を抑制する回路方式において,可飽和リアクトルと、コンデンサと、抵抗と、の直列回路を前記電圧駆動型半導体素子のコレクタ端子とゲート端子との間に接続したことを特徴とする半導体保護回路。
- ダイオードを逆並列接続した電圧駆動型半導体素子のダイオード逆回復時のサージによる過電圧を抑制する回路方式において,可飽和リアクトルと、コンデンサと、抵抗と、の直列回路を前記電圧駆動型半導体素子のコレクタ端子とゲート端子との間に接続したことを特徴とする半導体保護回路。
- 前記抵抗は、抵抗値を有する導電性部材で構成したことを特徴とする請求項1、または2に記載の半導体保護回路。
Priority Applications (1)
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JP2009016607A JP5287294B2 (ja) | 2009-01-28 | 2009-01-28 | 半導体保護回路 |
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JP2009016607A JP5287294B2 (ja) | 2009-01-28 | 2009-01-28 | 半導体保護回路 |
Publications (2)
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JP2010178461A JP2010178461A (ja) | 2010-08-12 |
JP5287294B2 true JP5287294B2 (ja) | 2013-09-11 |
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JP2009016607A Active JP5287294B2 (ja) | 2009-01-28 | 2009-01-28 | 半導体保護回路 |
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JP (1) | JP5287294B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014027789A (ja) * | 2012-07-27 | 2014-02-06 | Hitachi Ltd | 電力変換器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3190775B2 (ja) * | 1993-01-14 | 2001-07-23 | 株式会社東芝 | スイッチング電源 |
JP2000245137A (ja) * | 1999-02-18 | 2000-09-08 | Fuji Electric Co Ltd | 半導体素子の保護装置 |
JP3598933B2 (ja) * | 2000-02-28 | 2004-12-08 | 株式会社日立製作所 | 電力変換装置 |
JP4765018B2 (ja) * | 2005-06-10 | 2011-09-07 | 富士電機株式会社 | 電力変換装置 |
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