JPWO2015121899A1 - 電力用半導体モジュール - Google Patents
電力用半導体モジュール Download PDFInfo
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- JPWO2015121899A1 JPWO2015121899A1 JP2015562568A JP2015562568A JPWO2015121899A1 JP WO2015121899 A1 JPWO2015121899 A1 JP WO2015121899A1 JP 2015562568 A JP2015562568 A JP 2015562568A JP 2015562568 A JP2015562568 A JP 2015562568A JP WO2015121899 A1 JPWO2015121899 A1 JP WO2015121899A1
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- power semiconductor
- wiring pattern
- semiconductor module
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 286
- 239000000758 substrate Substances 0.000 claims abstract description 232
- 239000000463 material Substances 0.000 claims description 23
- 229910002601 GaN Inorganic materials 0.000 claims description 7
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 4
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Abstract
Description
図1は、この発明の実施の形態1の電力用半導体モジュールの上面模式図である。図2は、この発明の実施の形態1の電力用半導体モジュールの概略側面図である。図3は、この発明の実施の形態1の電力用半導体モジュールの概略側面図である。図2には、図1におけるX側から見た場合の、図3には、図1におけるY側から見た場合の概略側面図を示す。図4は、この発明の実施の形態1の電力用半導体モジュールの主電極(正極電極、負極電極、および交流電極)を取り除いた上面模式図である。図4には、図1から主電極を取り除き、自己消弧型半導体素子6や還流ダイオード7などのチップレイアウトを示す。図5は、この発明の実施の形態1の電力用半導体モジュールの等価回路図である。ここで、X側から見た方向をX方向、Y側から見た方向をY方向とする。
本実施の形態2においては、実施の形態1で用いた1対の鏡面対称である正負アームを複数対配置した点が異なる。このように鏡面対称である正負アームを複数対配置することで、それぞれの鏡面対称部分において、自己消弧型半導体素子を流れる電流のアンバランスを抑制することができる。
本実施の形態3においては、実施の形態1,2で用いた隣接する絶縁基板の鏡面対称である部分を含むソース配線パターンをボンディングワイヤで接続した点が異なる。このように隣接する絶縁基板の鏡面対称である部分を含むソース配線パターンをボンディングワイヤで接続し導通させることで、それぞれの鏡面対称部分において、自己消弧型半導体素子を流れる電流のアンバランスを抑制したまま、導通箇所を増加させることでインダクタンスを低減することができる。
Claims (12)
- 自己消弧型半導体素子を直列接続して構成され、前記自己消弧型半導体素子の直列接続点を有する正負アームと、
前記正負アームに接続される正極側電極、負極側電極、および交流電極と、
前記正負アームの前記自己消弧型半導体素子と前記正極側電極、前記負極側電極、および前記交流電極とを接続する複数の配線パターンが形成された基板とを備え、
隣接する前記配線パターンに流れる電流の方向が同じで、一方の前記配線パターンが他方の前記配線パターンに対して鏡面対称に配置されたことを特徴とする電力用半導体モジュール。 - 前記配線パターンは、前記自己消弧型半導体素子を介した電流が流れ、前記鏡面対称の基準線に対して隣接して平行に配置された平行部を有することを特徴とする請求項1に記載の電力用半導体モジュール。
- 前記配線パターンは、前記配線パターン上に前記鏡面対称の基準線に対して垂直方向に一列に配置された前記自己消弧型半導体素子と配線材を介して接続され、前記鏡面対称の基準線に対して垂直方向に配置された垂直部を有し、前記垂直部を流れる電流の方向が逆方向となるように前記正負アームの前記垂直部を隣接して対向して配置されたことを特徴とする請求項1または請求項2に記載の電力用半導体モジュール。
- 前記配線パターンは、前記配線パターン上に前記鏡面対称の基準線に対して垂直方向に一列に配置された前記自己消弧型半導体素子と配線材を介して接続され、前記鏡面対称の基準線に対して垂直方向に配置された垂直部を有し、前記垂直部を流れる電流の方向が同方向となるように前記正負アームの前記垂直部を隣接して対向して配置されたことを特徴とする請求項1または請求項2に記載の電力用半導体モジュール。
- 前記正負アームいずれかの前記配線パターンのうち、隣接する前記垂直部同士が前記配線材で電気的に接続されたことを特徴とする請求項1〜請求項4のいずれか1項に記載の電力用半導体モジュール。
- 前記配線パターンを電気的に接続する前記配線材は、複数本のボンディングワイヤを用いたことを特徴とする請求項5に記載の電力用半導体モジュール。
- 前記基板は、2種類あり、それぞれの前記基板に形成された前記配線パターンが鏡面対称になるように前記2種類の基板が配置されたことを特徴とする請求項1〜請求項6のいずれか1項に記載の電力用半導体モジュール。
- 前記自己消弧型半導体素子に対して逆並列に接続され、前記配線パターンに接合されるダイオードを有し、前記正負アームは、前記自己消弧型半導体素子と前記ダイオードとの並列回路を直列接続して構成されることを特徴とする請求項1〜請求項7のいずれか1項に記載の電力用半導体モジュール。
- 前記基板は、複数枚あり、隣接する前記基板上に形成された前記配線パターンが鏡面対称になるように前記複数の基板が配置されたことを特徴とする請求項1〜請求項8のいずれか1項に記載の電力用半導体モジュール。
- 前記ダイオードが珪素よりバンドギャップが広いワイドギャップ半導体で形成されることを特徴とする請求項8に記載の電力用半導体モジュール。
- 前記自己消弧型半導体素子が珪素よりバンドギャップの広いワイドギャップ半導体で形成されることを特徴とする請求項1〜10のいずれか1項に記載の電力用半導体モジュール。
- 前記ワイドギャップ半導体は、炭化珪素、窒化ガリウム材料、およびダイヤモンドのうちのいずれか1つであることを特徴とする請求項10または11に記載の電力用半導体モジュール。
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