JP7269400B2 - キャリア基板及びその適用可能なパワーモジュール - Google Patents
キャリア基板及びその適用可能なパワーモジュール Download PDFInfo
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Description
Claims (20)
- 少なくとも一つの配線層を備える回路基板本体と、
前記回路基板本体内に埋設された少なくとも一つのプレハブ基板であって、前記プレハブ基板が、絶縁層及び少なくとも一つの金属層を含み、前記金属層が前記絶縁層の上面及び下面の少なくとも一つの面に設置され、前記絶縁層の前記上面及び前記下面が互いに対向する2つの面であり、かつ前記絶縁層がセラミック材料からなり、前記金属層が焼結工程により前記絶縁層に接続され、かつ前記絶縁層が、前記少なくとも一つの金属層に接触する表面が位置する平面において、少なくとも一部が前記金属層から露出しており、前記絶縁層の前記金属層から露出した部分が外縁部であり、かつ前記外縁部が水平方向に沿って前記回路基板本体内に延びている、少なくとも一つのプレハブ基板と、
を含むことを特徴とする、キャリア基板。 - 前記少なくとも一つのプレハブ基板が金属被覆セラミック基板であり、前記絶縁層がアルミナセラミック、窒化アルミニウムセラミック、窒化珪素セラミック、酸化ベリリウムセラミック及びジルコニア強化アルミナセラミックからなる群から選択される一つであり、前記少なくとも一つの金属層が銅及びアルミニウムからなる群から選択される一つであり、
前記絶縁層が0.2mmから1.6mmの範囲の厚さを有し、前記少なくとも一つの金属層が0.1mmから1mmの範囲の厚さを有し、
前記少なくとも一つのプレハブ基板が直接金属層被覆または活性金属ろう付けによる金属層被覆工程により実現されることを特徴とする、請求項1に記載のキャリア基板。 - 前記外縁部が、前記回路基板本体と前記水平方向に重ね接続される領域に、0.3mmより大きい幅を有することを特徴とする、請求項1に記載のキャリア基板。
- 前記回路基板本体が少なくとも二つの芯板及び少なくとも一つの半硬化シートを含み、前記少なくとも二つの芯板が前記少なくとも一つの半硬化シートにより接続され、前記絶縁層の前記外縁部が前記少なくとも一つの半硬化シートにより前記回路基板本体と垂直方向に重ね接続されていることを特徴とする、請求項1に記載のキャリア基板。
- 前記少なくとも一つのプレハブ基板が前記回路基板本体と組み合わせて前記キャリア基板の第一面及び第二面を形成し、前記第一面と前記第二面が互いに対向する二つの面であり、前記少なくとも一つの配線層と前記少なくとも一つの金属層が、前記キャリア基板の前記第一面により電子デバイスに電気的に接続されていることを特徴とする、請求項1に記載のキャリア基板。
- 前記キャリア基板が、前記回路基板本体内に設置され、前記少なくとも一つの配線層と空間的に対応しており、かつ前記キャリア基板の前記第二面に位置する有機絶縁材料層をさらに含むことを特徴とする、請求項5に記載のキャリア基板。
- 前記キャリア基板が、前記有機絶縁材料層内に嵌設され、かつ前記少なくとも一つの配線層に電気的に接続された埋め込み要素をさらに含むことを特徴とする、請求項6に記載のキャリア基板。
- 前記少なくとも一つの配線層が前記回路基板本体に埋設され、前記少なくとも一つの配線層の一部が前記水平方向に沿って延在し、かつ前記少なくとも一つのプレハブ基板の少なくとも片側に位置し、かつ前記少なくとも一つの配線層の一部が、前記プレハブ基板の上面が位置する平面と前記プレハブ基板の下面が位置する平面との間にあることを特徴とする、請求項1に記載のキャリア基板。
- 回路基板本体と少なくとも一つのプレハブ基板を含むキャリア基板であって、前記回路基板本体が少なくとも一つの配線層、第一面及び第二面を備え、前記第一面と前記第二面が互いに対向する二つの面であり、前記少なくとも一つのプレハブ基板が前記回路基板本体内に埋設され、前記少なくとも一つのプレハブ基板が絶縁層及び少なくとも一つの金属層を含み、前記少なくとも一つの金属層が前記絶縁層の上面及び下面の少なくとも一つの面に設置され、前記絶縁層の前記上面及び前記下面が互いに対向する二つの面であり、かつ前記絶縁層がセラミック材料からなり、前記金属層が焼結工程により前記絶縁層に接続され、かつ前記絶縁層が、前記少なくとも一つの金属層に接触する表面が位置する平面において、少なくとも一部が前記金属層から露出しており、前記絶縁層の前記金属層から露出した部分が外縁部であり、かつ前記外縁部が水平方向に沿って前記回路基板本体内に延びている、キャリア基板と、
前記キャリア基板の前記第一面に設置され、前記少なくとも一つの配線層及び前記少なくとも一つの金属層に電気的に接続される少なくとも一つのパワー半導体であって、前記少なくとも一つのパワー半導体と前記少なくとも一つの金属層の前記第一面への垂直投影が、少なくとも部分的に重なっている、少なくとも一つのパワー半導体と、
を含むことを特徴とする、パワーモジュール。 - 前記少なくとも一つのパワー半導体が第一パワー半導体及び第二パワー半導体を含み、前記第一パワー半導体と前記第二パワー半導体が、前記少なくとも一つの金属層により直列に接続されてブリッジアームを形成することを特徴とする、請求項9に記載のパワーモジュール。
- 前記第一面に設置されたクランプ要素をさらに含み、前記少なくとも一つの配線層が第一配線層及び第二配線層を含み、前記第一パワー半導体及び前記第二パワー半導体が、前記第一配線層及び前記第二配線層により前記クランプ要素と並列に接続されていることを特徴とする、請求項10に記載のパワーモジュール。
- 少なくとも一つのプレハブ基板が、前記水平方向に沿って配列して前記キャリア基板の前記第一面を形成する第一プレハブ基板及び第二プレハブ基板を含み、前記第一パワー半導体と前記第二パワー半導体が、それぞれ前記第一プレハブ基板と前記第二プレハブ基板に設置されることを特徴とする、請求項10に記載のパワーモジュール。
- 少なくとも一つのプレハブ基板が、前記水平方向に沿って配列して前記キャリア基板の前記第二面を形成する第三プレハブ基板及び第四プレハブ基板をさらに含み、前記第一プレハブ基板と前記第三プレハブ基板が垂直方向に沿って積み重ねられ、前記第二プレハブ基板と前記第四プレハブ基板が前記垂直方向に沿って積み重ねられることを特徴とする、請求項12に記載のパワーモジュール。
- 前記キャリア基板が第三配線層をさらに含み、前記第三配線層の少なくとも一部が前記第一プレハブ基板と前記第三プレハブ基板との間または前記第二プレハブ基板と第四プレハブ基板との間に位置し、
前記第三配線層が前記ブリッジアームの一端に電気的に接続され、かつ前記第三配線層が前記ブリッジアームの前記端と等電位であることを特徴とする、請求項13に記載のパワーモジュール。 - 前記キャリア基板の前記第二面に設置された放熱器をさらに含むことを特徴とする、請求項10~14のいずれかに記載のパワーモジュール。
- 前記キャリア基板が、前記回路基板本体内に設置され、前記少なくとも一つの配線層と空間的に対応しており、かつ前記キャリア基板の前記第二面に位置する有機絶縁材料層をさらに含むことを特徴とする、請求項9に記載のパワーモジュール。
- 前記キャリア基板が、前記有機絶縁材料層内に嵌設され、かつ前記少なくとも一つの配線層に電気的に接続された埋め込み要素をさらに含むことを特徴とする、請求項16に記載のパワーモジュール。
- 前記第一面に設置された変圧器をさらに含み、前記少なくとも一つのパワー半導体が第一パワー半導体及び第二パワー半導体を含み、前記変圧器が前記第一パワー半導体と前記第二パワー半導体との間に電気的に接続され、かつ前記第一パワー半導体が前記少なくとも一つのプレハブ基板に設置され、前記キャリア基板が、前記回路基板本体内に嵌埋されかつ前記第二パワー半導体に電気的に接続された金属導体ブロックをさらに含むことを特徴とする、請求項9に記載のパワーモジュール。
- 前記キャリア基板が、前記金属導体ブロックと前記キャリア基板の前記第二面との間に設置された熱伝導絶縁層を含むことを特徴とする、請求項18に記載のパワーモジュール。
- 前記第一パワー半導体が高電圧小電流のパワー半導体であり、前記第二パワー半導体が低電圧大電流のパワー半導体であることを特徴とする、請求項18に記載のパワーモジュール。
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