JP5332374B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5332374B2 JP5332374B2 JP2008191963A JP2008191963A JP5332374B2 JP 5332374 B2 JP5332374 B2 JP 5332374B2 JP 2008191963 A JP2008191963 A JP 2008191963A JP 2008191963 A JP2008191963 A JP 2008191963A JP 5332374 B2 JP5332374 B2 JP 5332374B2
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Description
本発明の第1の実施の形態は、ハイブリット車の車載電子回路システムに積載され、電圧レベルが異なる回路系の電気信号の伝達に使用され、絶縁ポート(insulated port)を構築する半導体装置(ハイブリット車用絶縁IC)に本発明を適用した例を説明するものである。
図3に示すように、第1の実施の形態に係る半導体装置10は、ハイブリット車の車載電子回路システム1に積載される(組み込まれる)。この車載電子回路システム1は、その一部しか図示していないが、低電圧系バッテリィ21と、この低電圧系バッテリィ21から供給される低電圧電源を使用する低電圧系回路2と、高電圧系バッテリィ31と、この高電圧系バッテリィ31から供給される高電圧電源を使用する高電圧系回路3とを備えている。半導体装置10は、低電圧系回路2とそれに絶縁分離状態において配設されている高電圧系回路3との間に配設され、低電圧系回路2と高電圧系回路3との間において電気信号の送信受信(伝達)を行う。
同図3に示すように、第1の実施の形態に係る半導体装置10は、第1の半導体チップ11と、第2の半導体チップ12と、第1のトランス13と、第2のトランス14とを備える。
図1及び図2に示すように、第1の実施の形態に係る半導体装置10は、強磁性体を有する基体15と、基体15に搭載された第1の半導体チップ11及び第2の半導体チップ12と、基体15の強磁性体上に配設され、第1の半導体チップ11に電気的に接続された第1のコイル131と、第1のコイル131に重複して配設され、第1のコイル131に電磁的に接続されるとともに、第2の半導体チップ12に電気的に接続された第2のコイル132と、第2のコイル132の中央部から第1のコイル131の中央部に渡って配設された第1のコア部181、第2のコイル132の側面の一部及び第1のコイル131の側面の一部に沿って配設された第1の側面シールド部182、第1のコイル131及び第2のコイル132上に配設された第1の上面シールド部183を有し、第1のコア部181、第1の側面シールド部182及び第1の上面シールド部183が強磁性体により構成され、基体15に装着されたトランス構造体18と、基体15の一部、第1の半導体チップ11、第2の半導体チップ12、第1のコイル131、第2のコイル132及びトランス構造体18を被覆する封止体100とを備える。
このように構成される第1の実施の形態に係る半導体装置10においては、第1の半導体チップ11と第2の半導体チップ12との間の電気信号の伝達に第1のトランス13及び第2のトランス14を備え、電磁誘導を用いて信号伝達を行うことによって、電気信号の伝達速度を高速化することができる。例えば、第1のトランス13及び第2のトランス14において電気信号を50nsec−100nsecの伝達速度まで高速化することができる。
第1の実施の形態の第1の変形例に係る半導体装置10はトランス構造体18の構造を代えた例を説明するものである。
第1の実施の形態の第2の変形例に係る半導体装置10は基体15へのトランス構造体18の装着を簡易に行える例を説明するものである。
本発明の第2の実施の形態は、第1の実施の形態に係る半導体装置10において、トランス構造体18の構造を代えてより一層のシールド機能を高めた例を説明するものである。
第2の実施の形態の変形例に係る半導体装置10はトランス構造体18の構造を代えた例を説明するものである。
本発明の第3の実施の形態は、第2の実施の形態に係る半導体装置10において、トランス構造体18の構成材料を代えた例を説明するものである。
第3の実施の形態の変形例に係る半導体装置10は、第3の実施の形態に係る半導体装置10のトランス構造体18の構造を代えた例を説明するものである。
本発明の第4の実施の形態は、第1の実施の形態に係る半導体装置10において、トランス構造体18の構成材料を代えた例を説明するものである。
本発明の第5の実施の形態は、第1の実施の形態乃至第4の実施の形態のいずれかに係る半導体装置10において、第1の半導体チップ11、第2の半導体チップ12、第1のトランス13、第2のトランス14のそれぞれの配置レイアウトを代えた例を説明するものである。
上記のように、本発明を複数の実施の形態並びに複数の変形例によって記載したが、この開示の一部をなす論述及び図面はこの発明を限定するものでない。本発明は様々な代替実施の形態、実施例及び運用技術に適用することができる。例えば、前述の実施の形態等においては、半導体装置10に2個の第1のトランス13及び第2のトランス14が搭載されているが、本発明はこれらの個数に限定されるものではない。半導体装置10に搭載される第1の半導体チップ11及び第2の半導体チップ12の個数についても、本発明は同様に限定されるものではない。
10…半導体装置
100…封止体
11…第1の半導体チップ
11A、11B、12A、12B…バッファ
11C…基板レギュレータ
12…第2の半導体チップ
13…第1のトランス
131…第1のコイル部
132…第2のコイル部
14…第2のトランス
141…第3のコイル部
142…第4のコイル部
15…基体
16…リード
17…積層基板
171…第1の絶縁体
172…第1の導電体
173…第2の絶縁体
174…第2の導電体
175…第3の絶縁体
18…トランス構造体
18A…第1のトランス構造体
18B…第2のトランス構造体
181、181A、181B…第1のコア部
182、182A、182B…第1の側面シールド部
183、183A、183B…第1の上面シールド部
184、184A、184B…第2のコア部
185、185A、185B…第2の側面シールド部
186、186A、186B…第2の上面シールド部
187、187A、187B…トランス間シールド部
188…第3の側面シールド部
189…第4の側面シールド部
191−194…ワイヤ
2…低電圧系回路
21…低電圧系バッテリィ
22、32…DC−DCコンバータ
23…マイクロコンピュータ
3…高電圧系回路
31…高電圧系バッテリィ
33…PAMコンバータ
34…前段ドライバ
35…ドライバ
36…電気モータ
Claims (8)
- 強磁性体を有する基体と、
前記基体に搭載された第1の半導体チップ及び第2の半導体チップと、
前記基体の前記強磁性体上に配設され、前記第1の半導体チップに電気的に接続された第1のコイルと、
前記第1のコイルに重複して配設され、前記第1のコイルに電磁的に接続されるとともに、前記第2の半導体チップに電気的に接続された第2のコイルと、
前記第2のコイルの中央部から前記第1のコイルの中央部に渡って配設された第1のコア部、前記第2のコイルの側面の一部及び前記第1のコイルの側面の一部に沿って配設された第1の側面シールド部、前記第1のコイル及び前記第2のコイル上に配設された第1の上面シールド部を有し、前記第1のコア部、前記第1の側面シールド部及び前記第1の上面シールド部が強磁性体により構成され、前記基体に装着されたトランス構造体と、
前記基体の一部、前記第1の半導体チップ、前記第2の半導体チップ、前記第1のコイル、前記第2のコイル及び前記トランス構造体を被覆する封止体と、
を備えたことを特徴とする半導体装置。 - 前記基体の前記強磁性体上において前記第1のコイル及び前記第2のコイルとは別領域上に配設され、前記第1の半導体チップに電気的に接続された第3のコイルと、
前記第3のコイルに重複して配設され、前記第3のコイルに電磁的に接続されるとともに、前記第2の半導体チップに電気的に接続された第4のコイルと、を更に備え、
前記トランス構造体は、前記第4のコイルの中央部から前記第3のコイルの中央部に渡って配設された第2のコア部、前記第4のコイルの側面の一部及び前記第3のコイルの側面の一部に沿って配設された第2の側面シールド部、前記第3のコイル及び前記第4のコイル上に配設された第2の上面シールド部、前記第1のコイル及び前記第2のコイルと前記第3のコイル及び前記第4のコイルとの間に配設されたトランス間シールド部を更に備えたことを特徴とする請求項1に記載の半導体装置。 - 前記基体の一表面上に配設され、前記第1のコイル、前記第2のコイル、前記第3のコイル及び前記第4のコイルを有し、フレキシブル性を有する積層基板を更に備えたことを特徴とする請求項2に記載の半導体装置。
- 前記基体、前記トランス構造体はいずれも鉄−ニッケル合金材により構成されていることを特徴とする請求項1乃至請求項3のいずれかに記載の半導体装置。
- 前記積層基板は、前記基体の前記一表面上に配設され、フレキシブル性を有する樹脂膜により構成された第1の絶縁体と、前記第1の絶縁体上に配設された前記第2のコイル及び前記第4のコイルと、前記第2のコイル上及び前記第4のコイル上に配設され、フレキシブル性を有する樹脂膜により構成された第2の絶縁体と、前記第2の絶縁体上に配設された前記第1のコイル及び前記第3のコイルと、前記第1のコイル上及び前記第3のコイル上に配設され、フレキシブル性を有する樹脂膜により構成された第3の絶縁体と、を備えていることを特徴とする請求項3又は請求項4に記載の半導体装置。
- 前記第1の半導体チップ、前記第2の半導体チップは互いに離間して前記積層基板上に配設され、前記第1のコイル、前記第2のコイル、前記第3のコイル及び前記第4のコイルは前記第1の半導体チップと前記第2の半導体チップとの間に配設されていることを特徴とする請求項3乃至請求項5のいずれかに記載の半導体装置。
- 前記第1のコイル、前記第2のコイル及び前記トランス構造体の前記第1のコアは第1のトランスを構成し、前記第3のコイル、前記第4のコイル及び前記トランス構造体の前記第2のコアは第2のトランスを構成することを特徴とする請求項2乃至請求項6のいずれかに記載の半導体装置。
- 前記第1の半導体チップはドライバとして機能し、前記第2の半導体チップはバッファとして機能し、前記第1のトランス及び前記第2のトランスは前記ドライバからバッファに信号を伝達することを特徴とする請求項7に記載の半導体装置。
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PCT/JP2009/061180 WO2010010769A1 (ja) | 2008-07-25 | 2009-06-19 | 半導体装置 |
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