JP6656414B2 - 半導体装置の駆動方法および駆動回路 - Google Patents
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- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
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Description
図5を参照して、半導体装置100は、ゲート配線114aによってゲート電圧信号を制御される複数のトランジスタセル120aと、ゲート配線114bによってゲート電圧信号を制御される複数のトランジスタセル120bとが、コレクタ電極103およびエミッタ電極111の間に並列接続された構成の等価回路で示される。
図6を参照して、時刻t1以前では、半導体装置100をオフ状態とするために、駆動制御信号SpdはLレベルである。これに応じて、ゲート電圧信号Vg1およびVg2の両方は、各トランジスタセル120a,120bをオフするための電圧(以下、「オフ電圧」)とも称する)に設定される。オフ電圧は、たとえば接地電圧GNDまたは負電圧である。
図8を参照して、時刻t3において、ゲート電圧信号Vg1がオン電圧からオフ電圧に変化することで、半導体装置100はターンオフされる。ゲート電圧信号Vg2について、第1のケースでの波形301は、図6のVg1の波形と同様である。一方で、第2のケースの波形302および第3のケースの波形303では、ターンオフ時のVgsはオフ電圧に固定される。
以上では、ゲート配線を2種類に区分してゲート電圧信号をそれぞれ独立に制御する構成を説明したが、ゲート配線は、3以上の複数種類に区分することも可能である。
Claims (6)
- 電気的に並列接続された複数の半導体素子と、電気的に絶縁された複数のゲート配線とを備えた半導体装置の駆動方法であって、
前記複数のゲート配線は、第1および第2のゲート配線を含み、
前記複数の半導体素子は、前記第1のゲート配線の電圧によって電流が制御される第1のチャネル領域を有する少なくとも1個の第1の半導体素子と、前記第2のゲート配線の電圧によって電流が制御される第2のチャネル領域を有する少なくとも1個の第2の半導体素子とを含み、
前記駆動方法は、
前記半導体装置のターンオン時において、前記第1および第2のゲート配線の両方に前記半導体装置のオン電圧を印加するステップと、
前記オン電圧の印加が開始されてから予め定められた時間の経過後において、前記第2のゲート配線には前記半導体装置のオフ電圧を印加する一方で、前記第1のゲート配線には前記オン電圧を印加するステップとを備える、半導体装置の駆動方法。 - 前記予め定められた時間は、前記オン電圧の印加開始から前記半導体装置の端子間電流の立ち上がりが開始されるまでの第1の所要時間と、前記端子間電流の立ち上がりの開始から前記半導体装置の端子間電圧が立ち下がるまでの第2の所要時間との和以上である、請求項1記載の半導体装置の駆動方法。
- 前記予め定められた時間は、前記半導体装置のミラー区間後に、前記第2のゲート配線に前記オフ電圧が印加されるように決められる、請求項1記載の半導体装置の駆動方法。
- 電気的に並列接続された複数の半導体素子と、電気的に絶縁された複数のゲート配線とを備えた半導体装置の駆動回路であって、
前記複数のゲート配線は、第1および第2のゲート配線を含み、
前記複数の半導体素子は、前記第1のゲート配線の電圧によって電流が制御される第1のチャネル領域を有する少なくとも1個の第1の半導体素子と、前記第2のゲート配線の電圧によって電流が制御される第2のチャネル領域を有する少なくとも1個の第2の半導体素子とを含み、
前記駆動回路は、
前記半導体装置のターンオン時に第1の信号レベルから第2の信号レベルに遷移する一方で、前記半導体装置のターンオフ時に前記第2の信号レベルから前記第1の信号レベルに遷移する駆動制御信号に従って、前記第1のゲート配線に前記半導体装置のオン電圧またはオフ電圧を印加するように構成された第1のゲート電圧制御部と、
前記駆動制御信号に応じて前記第2のゲート配線に前記オン電圧または前記オフ電圧を印加するように構成された第2のゲート電圧制御部とを備え、
前記第1のゲート電圧制御部は、前記駆動制御信号が前記第1の信号レベルであるときに前記オフ電圧を前記第1のゲート配線に印加するとともに、前記駆動制御信号が前記第2の信号レベルであるときに前記オン電圧を前記第1のゲート配線に印加し、
前記第2のゲート電圧制御部は、前記駆動制御信号が前記第1の信号レベルから前記第2の信号レベルへ遷移したときに、前記第2のゲート配線に対して予め定められた時間幅で前記オン電圧をパルス状に印加する、半導体装置の駆動回路。 - 前記予め定められた時間幅は、前記オン電圧の印加開始から前記半導体装置の端子間電流の立ち上がりが開始されるまでの第1の所要時間と、前記端子間電流の立ち上がりの開始から前記半導体装置の端子間電圧が立ち下がるまでの第2の所要時間との和以上となるように決められる、請求項4記載の半導体装置の駆動回路。
- 前記予め定められた時間幅は、前記半導体装置のミラー区間後に、前記第2のゲート配線に対して前記オフ電圧が印加されるように決められる、請求項4記載の半導体装置の駆動回路。
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JP6946219B2 (ja) * | 2018-03-23 | 2021-10-06 | 株式会社東芝 | 半導体装置 |
JP7006547B2 (ja) | 2018-09-10 | 2022-01-24 | 三菱電機株式会社 | 半導体装置 |
DE112019006364T5 (de) * | 2018-12-21 | 2021-09-02 | Rohm Co., Ltd. | Halbleiterbauelement |
US11101375B2 (en) | 2019-03-19 | 2021-08-24 | Kabushiki Kaisha Toshiba | Semiconductor device and method of controlling same |
JP7041653B2 (ja) * | 2019-03-19 | 2022-03-24 | 株式会社東芝 | 半導体装置およびその制御方法 |
JP7199270B2 (ja) * | 2019-03-20 | 2023-01-05 | 株式会社東芝 | 半導体装置及び半導体回路 |
JP7458273B2 (ja) * | 2020-03-03 | 2024-03-29 | 株式会社東芝 | 半導体装置の制御方法 |
US11374563B2 (en) * | 2020-03-03 | 2022-06-28 | Kabushiki Kaisha Toshiba | Method for controlling semiconductor device |
JP7387501B2 (ja) * | 2020-03-18 | 2023-11-28 | 株式会社東芝 | 半導体装置およびその制御方法 |
JP7472068B2 (ja) * | 2021-03-19 | 2024-04-22 | 株式会社東芝 | 半導体装置及び半導体回路 |
CN116388742B (zh) * | 2023-06-02 | 2023-08-29 | 东莞市长工微电子有限公司 | 功率半导体器件栅极驱动电路及驱动方法 |
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JP2004319624A (ja) * | 2003-04-14 | 2004-11-11 | Denso Corp | 半導体装置 |
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JP5701176B2 (ja) * | 2011-08-04 | 2015-04-15 | 三菱電機株式会社 | ゲート駆動装置 |
WO2015022860A1 (ja) * | 2013-08-12 | 2015-02-19 | 日産自動車株式会社 | スイッチング装置 |
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