JP2014175652A - オープンソース・パワー・カッド・フラット・ノーリード(pqfn)リードフレーム - Google Patents
オープンソース・パワー・カッド・フラット・ノーリード(pqfn)リードフレーム Download PDFInfo
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Abstract
【解決手段】PQFNパッケージはPQFNリードフレームの上に置かれたU相、V相及びW相パワースイッチを備える。U相パワースイッチのドレインはPQFNリードフレームのU相出力ストリップに接続される。U相パワースイッチのソースはU相電流検出端子に接続される。U相出力ストリップはPQFNリードフレームを実質的に横断できる。PQFNリードフレームの上に置かれた別のU相パワースイッチを備え、別のU相パワースイッチのソースはPQFNリードフレームのU相出力ストリップに接続される。U相出力ストリップに少なくとも1つのワイヤボンドを接続することができる。
【選択図】図1A
Description
本明細書で使用される、用語「III−V族」は少なくとも1つのIII族元素と少なくとも1つのV族元素を含む化合物半導体を意味する。例えば、III−V族半導体は、III族窒化物半導体の形を取り得る。「III族窒化物」又は「III−N」は窒素とアルミニウム(Al)、ガリウム(Ga)、インジウム(In)及びボロン(B)などの少なくとも1つのIII族元素を含む化合物半導体を意味し、例えば窒化アルミニウムガリウム(AlxGa(1-x)N、窒化インジウムガリウムInyGa(1-y)N、窒化アルミニウムインジウムガリウムAlxInyGa(1-x-y)N、砒化リン化窒化ガリウム(GaAsaPbN(1-a-b))、砒化リン化窒化アルミニウムインジウムガリウム(AlxInyGa(1-x-y)AsaPbN(1-a-b))などの合金を含むが、これらに限定されない。また、III族窒化物は一般に、Ga極性、N極性、半極性又は非極性結晶方位などの任意の極性を有するが、これらに限定されない。また、III族窒化物材料は、ウルツ鉱型、閃亜鉛鉱型、あるいは混合ポリタイプ(結晶多形)のいずれかを含むことができ、単結晶又はモノクリスタル、多結晶、または非結晶の結晶構造を含むことができる。本明細書で使用される、「窒化ガリウム」、「GaN」はIII族窒化物化合物半導体を意味し、III族元素は若干量又は相当量のガリウムを含むが、ガリウムに加えて他のIII族元素も含むことができる。また、III−V族又はGaNトランジスタはIII−V族又はGaNトランジスタを低電圧IV族トランジスタとカスコード接続することによって形成される複合高電圧エンハンスメントモードトランジスタも指す。
Claims (20)
- パワー・カッド・フラット・ノーリード(PQFN)リードフレームであって、
前記PQFNリードフレームの上に置かれたU相、V相及びW相パワースイッチを備え、
前記U相パワースイッチのドレインが前記PQFNリードフレームのU相出力ストリップに接続され、
前記U相パワースイッチのソースがU相電流検出端子に接続されている、
PQFNリードフレーム。 - 前記U相出力ストリップは前記PQFNリードフレームを実質的に横断している、請求項1記載のPQFNリードフレーム。
- 前記U相出力ストリップ内に第1のリードフレームアイランドを備える、請求項1記載のPQFNリードフレーム。
- 前記U相出力ストリップに接続された少なくとも1つのワイヤボンドを備える、請求項1記載のPQFNリードフレーム。
- 前記PQFNリードフレームの上に置かれた別のU相パワースイッチを備え、前記別のU相パワースイッチのソースが前記PQFNリードフレームの前記U相出力ストリップに接続されている、請求項1記載のPQFNリードフレーム。
- 前記U相パワースイッチの前記ソースを前記U相電流検出端子に接続する少なくとも1つのワイヤボンドを備える、請求項1記載のPQFNリードフレーム。
- 前記U相パワースイッチは前記PQFNリードフレームのU相出力パッドの上に置かれている、請求項1記載のPQFNリードフレーム。
- 前記PQFNリードフレームの上に置かれ、前記U相、V相及びW相パワースイッチのゲートに接続されているドライバ集積回路(IC)を備える、請求項1記載のPQFNリードフレーム。
- 前記U相、V相及びW相パワースイッチはIII−V族トランジスタを備える、請求項1記載のPQFNリードフレーム。
- 前記PQFNパッケージは12mm×12mmより大きいフットプリントを有する、請求項1記載のPQFNリードフレーム。
- 前記PQFNパッケージは12mm×12mmより小さいフットプリントを有する、請求項1記載のPQFNリードフレーム。
- パワー・カッド・フラット・ノーリード(PQFN)リードフレームであって、
前記PQFNリードフレームの上に置かれ、それぞれ前記PQFNリードフレームのU相出力ストリップ、V相出力ストリップ及びW相出力パッドに接続されたU相、V相及びW相パワースイッチを備え、
前記U相出力ストリップ、前記V相出力ストリップ及び前記W相出力パッドがそれぞれ前記U相、前記V相及び前記W相パワースイッチのドレインに接続され、
前記U相、前記V相及び前記W相パワースイッチのソースがそれぞれU相、V相及びW相電流検出端子に接続されている、
PQFNリードフレーム。 - 前記U相出力ストリップは前記PQFNリードフレームを実質的に横断している、請求項12記載のPQFNリードフレーム。
- 前記V相出力ストリップは前記PQFNリードフレームを実質的に横断している、請求項12記載のPQFNリードフレーム。
- 前記U相出力ストリップ内に第1のリードフレームアイランドを備え、前記V相出力ストリップ内に第2のリードフレームアイランドを備える、請求項12記載のPQFNリードフレーム。
- 前記V相パワースイッチの前記ソースを前記V相電流検出端子に接続する少なくとも1つのワイヤボンドを備える、請求項12記載のPQFNリードフレーム。
- 前記PQFNリードフレームの上に置かれた別のU相パワースイッチ及び別のV相パワースイッチを備え、前記別のU相パワースイッチのソースが前記U相出力ストリップに接続され、前記別のV相パワースイッチのソースが前記V相出力ストリップに接続されている、請求項12記載のPQFNリードフレーム。
- 前記U相パワースイッチは前記PQFNリードフレームのU相出力パッドの上に置かれ、前記V相パワースイッチは前記PQFNリードフレームのV相出力パッドの上に置かれている、請求項12記載のPQFNリードフレーム。
- 単一のドライバ集積回路(IC)を含むパワー・カッド・フラット・ノーリード(PQFN)リードフレームであって、前記PQFNリードフレームは、
前記PQFNリードフレームの上に置かれ、それぞれ前記PQFNリードフレームのU相出力ストリップ、V相出力ストリップ及びW相出力パッドに接続されたU相、V相及びW相パワースイッチを備え、
前記U相出力ストリップ、前記V相出力ストリップ及び前記W相出力パッドがそれぞれ前記U相、前記V相及び前記W相パワースイッチのドレインに接続され、
前記U相、前記V相及び前記W相パワースイッチのソースがそれぞれU相、V相及びW相電流検出端子に接続され、
前記単一のドライバICは前記PQFNリードフレームのドライバICパッドの上に置かれ、前記U相出力ストリップ及び前記V相出力ストリップに接続されている、PQFNリードフレーム。 - 前記U相出力ストリップは前記PQFNリードフレームを実質的に横断している、請求項19記載のPQFNリードフレーム。
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