JP4882357B2 - 半導体素子の駆動回路 - Google Patents
半導体素子の駆動回路 Download PDFInfo
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- JP4882357B2 JP4882357B2 JP2005349332A JP2005349332A JP4882357B2 JP 4882357 B2 JP4882357 B2 JP 4882357B2 JP 2005349332 A JP2005349332 A JP 2005349332A JP 2005349332 A JP2005349332 A JP 2005349332A JP 4882357 B2 JP4882357 B2 JP 4882357B2
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- 239000004065 semiconductor Substances 0.000 title claims description 28
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Description
Claims (5)
- 自己消弧形半導体素子それぞれをブリッジ接続し、これらの半導体素子それぞれの駆動回路により直流電圧を所望の交流電圧に変換する電力変換装置において、
前記駆動回路それぞれに、対応する前記半導体素子の主端子間電圧の分圧電圧と該半導体素子へのオン・オフ信号とに基づいて前記電力変換装置の動作が正常か否かを判定する論理回路と、前記分圧電圧の有無を目視できる目視回路とを備えたことを特徴とする半導体素子の駆動回路。 - 前記論理回路は、前記半導体素子へオン信号が与えられているときに前記分圧電圧が有りならば異常で無しならば正常と判定する構成であることを特徴とする請求項1に記載の半導体素子の駆動回路。
- 前記分圧電圧は、前記半導体素子のコレクタまたはドレイン端子に第1抵抗と第2抵抗との直列回路の一端を接続し、この直列回路の他端を該半導体素子のエミッタまたはソース端子に接続したときの第2抵抗の両端電圧としたことを特徴とする請求項1又は請求項2に記載の半導体素子の駆動回路。
- 前記第2抵抗と前記目視回路としての発光ダイオードとの直列回路を新たな第2抵抗としたことを特徴とする請求項3に記載の半導体素子の駆動回路。
- 前記第2抵抗の両端に、前記目視回路としての第3抵抗と発光ダイオードの直列回路を並列接続し、この並列回路を新たな第2抵抗としたことを特徴とする請求項3に記載の半導体素子の駆動回路。
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JP2005349332A JP4882357B2 (ja) | 2005-12-02 | 2005-12-02 | 半導体素子の駆動回路 |
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JP2005349332A JP4882357B2 (ja) | 2005-12-02 | 2005-12-02 | 半導体素子の駆動回路 |
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JP2007159230A JP2007159230A (ja) | 2007-06-21 |
JP4882357B2 true JP4882357B2 (ja) | 2012-02-22 |
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JP2005349332A Active JP4882357B2 (ja) | 2005-12-02 | 2005-12-02 | 半導体素子の駆動回路 |
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Families Citing this family (1)
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JP6939740B2 (ja) * | 2018-08-24 | 2021-09-22 | 三菱電機株式会社 | 半導体モジュール |
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JPH0253279A (ja) * | 1988-08-15 | 1990-02-22 | Sony Corp | ディスクカートリッジ |
JP3531315B2 (ja) * | 1995-10-19 | 2004-05-31 | 富士電機ホールディングス株式会社 | 直流電動機の制御装置とその劣化判定方法 |
JP2004129378A (ja) * | 2002-10-02 | 2004-04-22 | Fuji Electric Holdings Co Ltd | 電力用半導体素子のゲート駆動回路 |
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