JP6968264B2 - パワーモジュールのダイの第1の相互接続体の修復を可能にするシステム及び方法 - Google Patents
パワーモジュールのダイの第1の相互接続体の修復を可能にするシステム及び方法 Download PDFInfo
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Description
パワーモジュールの少なくとも1つの他の相互接続体と、
第1の相互接続体の温度を上昇させることによって、及び、第1の相互接続体におけるクラックに沿って応力を上昇させ、それによってクラックにおける拡散速度を上昇させてクラックの回復を引き起こすことによって第1の相互接続体の修復を可能にするために、第1の相互接続体の少なくとも一部が所定の持続時間内に所定の温度に達するために、少なくとも1つの他の相互接続体を通る高周波周期電流フローを生成するように、少なくとも1つの他の相互接続体に接続される周期電流源と、
を備え、
相互接続体はボンディングワイヤであるか、又は相互接続体は銅ビアであり、周期電流源は他の2つの相互接続体に接続され、パワーモジュールは、所定の持続時間内に第1の相互接続体の少なくとも一部が所定の温度に達するために、2つの相互接続体に接続される1つの誘導コイルを更に備えるか、又はパワーモジュールは、所定の持続時間内に第1の相互接続体の少なくとも一部が所定の温度に達するために、2つの相互接続体に接続される1つの磁気構造体を更に備えることを特徴とする。
第1の相互接続体の少なくとも一部が所定の温度に達するために、少なくとも1つの他の相互接続体を通る周期電流フローを生成するように、高周波周期電流源をパワーモジュールの少なくとも1つの他の相互接続体に接続するステップと、
第1の相互接続体の温度を上昇させることによって、及び、第1の相互接続体におけるクラックに沿って応力を上昇させ、それによってクラック内の拡散速度を上昇させてクラックの回復を引き起こすことによって第1の相互接続体の修復を可能にするために、所定の持続時間内に所定の温度において周期電流源を制御するステップと、
を含み、
相互接続体はボンディングワイヤであるか、又は相互接続体は銅ビアであり、高周波周期電流源は他の2つの相互接続体に接続され、パワーモジュールは、所定の持続時間内に第1の相互接続体の少なくとも一部が所定の温度に達するために、2つの相互接続体に接続される1つの誘導コイルを更に備えるか、又はパワーモジュールは、所定の持続時間内に第1の相互接続体の少なくとも一部が所定の温度に達するために、2つの相互接続体に接続される1つの磁気構造体を更に備えることを特徴とする。
Claims (8)
- ダイを電気回路に接続する、パワーモジュールの前記ダイの第1の相互接続体の修復を可能にするシステムであって、前記システムは、
前記パワーモジュールの少なくとも1つの他の相互接続体と、
前記第1の相互接続体の温度を上昇させることによって、及び、前記第1の相互接続体におけるクラックに沿って応力を上昇させ、それによってクラックにおける拡散速度を上昇させて前記クラックの回復を引き起こすことによって前記第1の相互接続体の修復を可能にするために、前記第1の相互接続体の少なくとも一部が所定の持続時間内に所定の温度に達するために、前記第1の相互接続体および前記少なくとも1つの他の相互接続体を通る高周波周期電流フローを生成するように、前記第1の相互接続体および前記少なくとも1つの他の相互接続体に接続される周期電流源と、
を備え、
前記第1の相互接続体および前記少なくとも1つの他の相互接続体はボンディングワイヤであることを特徴とする、システム。 - 前記第1の相互接続体の第1の端子は前記ダイのメタライゼーション部に接続され、前記少なくとも1つの他の相互接続体である第2の相互接続体の第1の端子は、前記第1の相互接続体の第1の端子に接続され、前記周期電流源は、前記第1および前記第2の相互接続体及び前記メタライゼーション部を通る周期電流フローを生成するように前記第1および前記第2の相互接続体の第2の端子に接続されることを特徴とする、請求項1に記載のシステム。
- 前記ボンディングワイヤはアルミニウム合金ボンディングワイヤであることを特徴とする、請求項1または請求項2に記載のシステム。
- ダイを電気回路に接続する、パワーモジュールの前記ダイの第1の相互接続体の修復を可能にするシステムであって、前記システムは、
前記パワーモジュールの少なくとも2つの他の相互接続体と、
前記第1の相互接続体の温度を上昇させることによって、及び、前記第1の相互接続体におけるクラックに沿って応力を上昇させ、それによってクラックにおける拡散速度を上昇させて前記クラックの回復を引き起こすことによって前記第1の相互接続体の修復を可能にするために、前記第1の相互接続体の少なくとも一部が所定の持続時間内に所定の温度に達するために、前記少なくとも2つの他の相互接続体を通る高周波周期電流フローを生成するように、前記少なくとも2つの他の相互接続体に接続される周期電流源と、
を備え、
前記第1の相互接続体および前記少なくとも2つの他の相互接続体は銅ビアであり、
前記パワーモジュールは、前記所定の持続時間内に前記第1の相互接続体の少なくとも一部が前記所定の温度に達するために、前記少なくとも2つの他の相互接続体に接続される1つの誘導コイルを更に備えるか、又は
前記パワーモジュールは、前記所定の持続時間内に前記第1の相互接続体の少なくとも一部が前記所定の温度に達するために、前記少なくとも2つの他の相互接続体に接続される1つの磁気構造体を更に備えることを特徴とする、システム。 - 前記周期電流源が発生する電流は、100kHzを超える周波数及び82アンペア〜108アンペアのRMS値の矩形波信号又は正弦波信号であることを特徴とする、請求項1〜4のいずれか1項に記載のシステム。
- 前記所定の温度は150℃〜200℃の間であり、前記所定の持続時間は50時間〜100時間の間であることを特徴とする、請求項1〜5のいずれか1項に記載のシステム。
- ダイを電気回路に接続する、パワーモジュールの前記ダイの第1の相互接続体の修復を可能にする方法であって、前記方法は、
前記第1の相互接続体の少なくとも一部が所定の温度に達するために、前記第1の相互接続体および少なくとも1つの他の相互接続体を通る周期電流フローを生成するように、高周波周期電流源を前記第1の相互接続体および前記パワーモジュールの前記少なくとも1つの他の相互接続体に接続するステップと、
前記第1の相互接続体の温度を上昇させることによって、及び、前記第1の相互接続体におけるクラックに沿って応力を上昇させ、それによってクラック内の拡散速度を上昇させて前記クラックの回復を引き起こすことによって前記第1の相互接続体の修復を可能にするために、所定の持続時間内に前記所定の温度において前記高周波周期電流源を制御するステップと、
を含み、
前記第1の相互接続体および前記少なくとも1つの他の相互接続体はボンディングワイヤであることを特徴とする、方法。 - ダイを電気回路に接続する、パワーモジュールの前記ダイの第1の相互接続体の修復を可能にする方法であって、前記方法は、
前記第1の相互接続体の少なくとも一部が所定の温度に達するために、少なくとも2つの他の相互接続体を通る周期電流フローを生成するように、高周波周期電流源を前記パワーモジュールの前記少なくとも2つの他の相互接続体に接続するステップと、
前記第1の相互接続体の温度を上昇させることによって、及び、前記第1の相互接続体におけるクラックに沿って応力を上昇させ、それによってクラック内の拡散速度を上昇させて前記クラックの回復を引き起こすことによって前記第1の相互接続体の修復を可能にするために、所定の持続時間内に前記所定の温度において前記高周波周期電流源を制御するステップと、
を含み、
前記第1の相互接続体および前記少なくとも2つの相互接続体は銅ビアであり、
前記パワーモジュールは、前記所定の持続時間内に前記第1の相互接続体の少なくとも一部が前記所定の温度に達するために、前記少なくとも2つの他の相互接続体に接続される1つの誘導コイルを更に備えるか、又は
前記パワーモジュールは、前記所定の持続時間内に前記第1の相互接続体の少なくとも一部が前記所定の温度に達するために、前記少なくとも2つの他の相互接続体に接続される1つの磁気構造体を更に備えることを特徴とする、方法。
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