JPWO2020054806A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JPWO2020054806A1 JPWO2020054806A1 JP2020546196A JP2020546196A JPWO2020054806A1 JP WO2020054806 A1 JPWO2020054806 A1 JP WO2020054806A1 JP 2020546196 A JP2020546196 A JP 2020546196A JP 2020546196 A JP2020546196 A JP 2020546196A JP WO2020054806 A1 JPWO2020054806 A1 JP WO2020054806A1
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- conductive pattern
- switching elements
- semiconductor device
- wiring member
- wiring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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Abstract
Description
半導体装置1は、上アームと下アームで構成されている。上アームは4つのIGBT素子11〜14が属していて、それらのIGBT素子11〜14が互いに並列に接続されている。上アームにおいて、一方の基板(絶縁板3)に配置されるIGBT素子11、12が同一導電パターン7上において並列に接続され、IGBT素子11、12に対して導還流ダイオード37、38が逆並列に接続されている。同様に、他方の基板(絶縁板4)に配置されるIGBT素子13、14が同一導電パターン8上において並列に接続され、IGBT素子13、14に対して還流ダイオード40、41が逆並列に接続されている。一方の導電パターン7上のIGBT素子11、12のコレクタ電極共通接続点(第1端子領域36)と、他方の導電パターン8上のIGBT素子13、14のコレクタ電極共通接続点(第1端子領域39)とに対して、高電位側の入力端子(P)が接続されている。入力端子(P)は、第1端子領域36、39に対して第1リードフレーム91を介して分岐して接続されている(図2参照)。一方の導電パターン7上のIGBT素子11、12のエミッタ電極共通接続点(第2端子領域61)と、他方の基板(導電パターン8)上のIGBT素子13、14のエミッタ電極共通接続点(第2端子領域62)とに対して、出力端子(O)が接続されている。出力端子(O)は、第2端子領域61、62に対して第2リードフレーム92を介して分岐して接続されている(図2参照)。
先ず、上アームに属するIGBT素子11〜14のエミッタ電極間を繋いでいる導体ワイヤ19及び導体ワイヤ21、22を設けない構成(未対策ケース)について検証する。図6は未対策ケースに対応した回路構成図である。当該回路図において各構成要素に対する符号は、図5に示す回路構成に示す符号に対応している。このケース場合、同一導電パターン7に配置された2つのIGBT素子11、12は、導体ワイヤW11、導還流ダイオード37、38のアノード電極、導体ワイヤW12、導電パターン31、導体ワイヤW13、別基板上の導電パターン9、第1端子領域81を経由して互いのエミッタ電極が接続される。したがって、2つのIGBT素子11、12のエミッタ電極間のインダクタンスL1は、エミッタ電極から第1端子領域81までに介在する経路のインダクタンス成分からなる大きなインダクタンス値になると考えられる。もう1つの導電パターン8に配置された2つのIGBT素子13、14についても同様にエミッタ電極間のインダクタンスL2はインダクタンスL1と同様の大きなインダクタンス値になると考えられる。
上記実施の形態に記載の半導体装置は、主面を有する基板と、前記主面の上に配設された複数の導電パターンと、前記複数の導電パターン上にコレクタ電極が接続するように配置された複数のスイッチング素子と、前記複数のスイッチング素子のうち異なる導電パターン上に配置され並列に接続されたスイッチング素子のエミッタ電極どうしを直接に接続する1つ又は複数の配線部材と、を備える。この構成により、異なる導電パターン上に配置され並列に接続されたスイッチング素子のエミッタ電極どうしを直接に接続されるので、並列に接続されるIGBT素子のゲート−エミッタ間の電位及びコレクタ−エミッタ間の電位が発振する現象を防止できる。
Claims (19)
- 主面を有する基板と、
前記主面の上に配設された複数の導電パターンと、
前記複数の導電パターン上にコレクタ電極が接続するように配置された複数のスイッチング素子と、
前記複数のスイッチング素子のうち異なる導電パターン上に配置され並列に接続されたスイッチング素子のエミッタ電極どうしを直接に接続する1つ又は複数の配線部材と、
を備える半導体装置。 - 前記配線部材によってエミッタ電極どうしが直接に接続された2つのスイッチング素子は、一方の前記導電パターン上に配置された複数のスイッチング素子と他方の前記導電パターン上に配置された複数のスイッチング素子との間で、最も距離が短い2つのスイッチング素子である請求項1記載の半導体装置。
- 同一導電パターン上に配置された複数のスイッチング素子のエミッタ電極どうしを直接に接続する他の配線部材を有する請求項1又は請求項2記載の半導体装置。
- 前記複数のスイッチング素子がコレクタ電極を接続するように配置される前記各導電パターンに設けられた複数の第1端子領域に接続された複数の第1脚部と、外部と接続する第1接続部と、前記各第1脚部と前記第1接続部との間を接続する第1配線部と、を有する第1リードフレームと、
前記複数の導電パターンに対応して前記主面に上に配設され、それぞれ対応する前記導電パターン上に配置された前記スイッチング素子のエミッタ電極が接続された複数の他の導電パターンと、
前記各他の導電パターンに設けられた複数の第2端子領域に接続された複数の第2脚部と、外部と接続する第2接続部と、前記各第2脚部と前記第2接続部との間を接続する第2配線部と、を有する第2リードフレームと、
を備えた請求項1から請求項3のいずれかに記載の半導体装置。 - 前記複数のスイッチング素子の配列方向と前記複数の第2端子領域の配列方向とが同一方向である請求項4記載の半導体装置。
- 前記複数のスイッチング素子の配列方向と前記配線部材の配線方向とが同一方向である請求項1から請求項5のいずれかに記載の半導体装置。
- 前記配線部材の配線方向と前記他の配線部材の配線方向とが同一方向である請求項1から請求項6のいずれかに記載の半導体装置。
- 前記複数のスイッチング素子の配列方向、前記配線部材の配線方向、前記第1端子領域の配列方向、及び前記第2端子領域の配列方向が同一方向である請求項4から請求項7のいずれかに記載の半導体装置。
- 前記複数のスイッチング素子の配列から近い順に、前記配線部材の配線、前記第1端子領域の配列、前記第2端子領域の配列が配置される請求項4から請求項8のいずれかに記載の半導体装置。
- 前記複数のスイッチング素子のうち同時にオンオフ動作するスイッチング素子によってアームが構成され、同一アームにおいて異なる導電パターン上に配置されたスイッチング素子のエミッタ電極どうしが前記配線部材によって接続される請求項1から請求項9のいずれかに記載の半導体装置。
- 前記配線部材は、第1の配線部材又は第2の配線部材を構成し、
前記複数のスイッチング素子のうち同時にオンオフ動作するスイッチング素子によって上アーム及び下アームが構成され、
前記基板は、前記スイッチング素子が配置された前記導電パターン毎に複数設けられ、
前記上アームに属する前記基板は、
前記スイッチング素子が配置され、高電位側の入力端子に接続される第1の導電パターンと、
中間電位に接続され、前記第1の導電パターンを囲むように形成される第2の導電パターンと、を有し、
前記第1の導電パターンは、平面視T字形状を有し、
前記スイッチング素子の並び方向に延びる第1長尺部と、
前記第1長尺部の延在方向中間部分から前記スイッチング素子の並び方向に直交する方向に延びる第2長尺部と、を有し、
前記第2の導電パターンは、
前記第2長尺部に沿って延び、当該第2長尺部を挟むように設けられる一対の第3長尺部を有し、
前記一対の第3長尺部どうしが第3の配線部材によって接続される請求項1から請求項3のいずれかに記載の半導体装置。 - 前記第2の導電パターンは、前記一対の第3長尺部の一端部どうしを連結する第4長尺部を更に有し、前記第3長尺部と前記第4長尺部によって前記第2長尺部を囲むように平面視U字形状に形成され、
前記第4長尺部が前記第3の配線部材を構成する請求項11に記載の半導体装置。 - 前記スイッチング素子は、前記第1長尺部上に配置され、
前記第1長尺部上に配置された前記スイッチング素子と前記第3長尺部の他端部とが、第1の主電流配線部材によって接続される請求項12に記載の半導体装置。 - 前記下アームに属する前記基板は、
前記スイッチング素子が配置され、中間電位の出力端子に接続される第3の導電パターンと、
低電位側の入力端子に接続される第4の導電パターンと、を有し、
前記第3の導電パターンは、前記第4の導電パターンを囲むように平面視U字形状を有し、
前記スイッチング素子が配置される主部と、
前記主部から前記上アーム側に向かって延び、前記第4の導電パターンを挟むように設けられる一対の第5長尺部と、を有する請求項11から請求項13のいずれかに記載の半導体装置。 - 前記第5長尺部の先端は前記第3長尺部の基端に対向配置され、
前記第5長尺部の先端と前記第3長尺部の基端とが第2の主電流配線部材によって接続される請求項14に記載の半導体装置。 - 前記第2長尺部には、前記高電位側の入力端子に接続される第1端子領域が設けられ、
前記第4の導電パターンには、前記低電位側の入力端子に接続される第3端子領域が設けられ、
前記第1端子領域と前記第3端子領域とは、対向配置される請求項14又は請求項15に記載の半導体装置。 - 前記上アームにおいて、異なる前記基板上に配置された前記第2の導電パターンどうしが第4の配線部材によって接続される請求項11から請求項16のいずれかに記載の半導体装置。
- 主面を有する基板と、
前記主面の上に配設された複数の導電パターンと、
前記複数の導電パターン上にコレクタ電極が接続するように配置された複数のスイッチング素子と、を備え、
前記複数のスイッチング素子のうち同時にオンオフ動作するスイッチング素子によって上アーム及び下アームが構成され、
前記基板は、前記スイッチング素子が配置された前記導電パターン毎に複数設けられ、
前記上アームに属する前記基板は、
前記スイッチング素子が配置され、高電位側の入力端子に接続される第1の導電パターンと、
中間電位に接続され、前記第1の導電パターンを囲むように形成される第2の導電パターンと、を有し、
前記第1の導電パターンは、平面視T字形状を有し、
前記スイッチング素子の並び方向に延びる第1長尺部と、
前記第1長尺部の延在方向中間部分から前記スイッチング素子の並び方向に直交する方向に延びる第2長尺部と、を有し、
前記第2の導電パターンは、
前記第2長尺部に沿って延び、当該第2長尺部を挟むように設けられる一対の第3長尺部を有し、
前記一対の第3長尺部どうしが第3の配線部材によって接続され、
前記上アームにおいて、異なる前記基板上に配置された前記第2の導電パターンの前記第3長尺部どうしが第4の配線部材によって接続される半導体装置。 - 前記第2の導電パターンは、前記一対の第3長尺部の一端部どうしを連結する第4長尺部を更に有し、前記第3長尺部と前記第4長尺部によって前記第2長尺部を囲むように平面視U字形状に形成され、
前記第4長尺部が前記第3の配線部材を構成する請求項18に記載の半導体装置。
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