JP7438021B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP7438021B2 JP7438021B2 JP2020087148A JP2020087148A JP7438021B2 JP 7438021 B2 JP7438021 B2 JP 7438021B2 JP 2020087148 A JP2020087148 A JP 2020087148A JP 2020087148 A JP2020087148 A JP 2020087148A JP 7438021 B2 JP7438021 B2 JP 7438021B2
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- 239000004065 semiconductor Substances 0.000 title claims description 194
- 230000037431 insertion Effects 0.000 claims description 96
- 238000003780 insertion Methods 0.000 claims description 96
- 239000000758 substrate Substances 0.000 claims description 13
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- 230000003071 parasitic effect Effects 0.000 description 27
- 230000010355 oscillation Effects 0.000 description 26
- 239000004020 conductor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000003566 sealing material Substances 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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Description
図1は、実施の形態1に係る半導体装置90の構成の例を示す断面図である。半導体装置90は、絶縁基板10(第1基板)と、はんだ接合部21と、はんだ接合部22と、ベース板31と、少なくとも1つの半導体チップ32(半導体部品)と、複数のワイヤ40と、複数の主電極51と、駆動電極52と、プリント配線板60(第2基板)と、ケース71と、封止材72と、蓋73とを有している。絶縁基板10は、第1面および第2面(図中、下面および上面)を有する絶縁板13と、第1面に設けられた導体層11と、第2面に設けられパターンを有する導体層12とを含む。複数のワイヤ40は、主ワイヤ41と、駆動ワイヤ42とを含む。
図5を参照して、実施の形態2に係る半導体装置は、複数の挿入回路210(図3:実施の形態1)に代わって、複数の挿入回路220を有している。複数の挿入回路220の各々、言い換えれば第1挿入回路221および第2挿入回路222の各々、は、第1ダイオードD1に直列かつ第2ダイオードD2に並列に接続された第1抵抗素子R1と、第2ダイオードD2に直列かつ第1ダイオードD1に並列に接続された第2抵抗素子R2と、を含む。なお、これら以外の構成については、上述した実施の形態1の構成とほぼ同じであるため、同一または対応する要素について同一の符号を付し、その説明を繰り返さない。
図6を参照して、実施の形態3に係る半導体装置は、上アーム部310(図5:実施の形態2)に代わって、上アーム部320を有している。上アーム部320においては、駆動回路の挿入回路220と、複数の半導体素子ELの各々との間に、ゲート抵抗素子RGが設けられている。さらに、図示は省略するが、下アーム部にもゲート抵抗素子RGが同様に設けられている。ゲート抵抗素子RGは、半導体素子ELが形成された半導体チップ32に内蔵された抵抗素子であってよく、あるいは、当該半導体チップとは別個に付加された抵抗素子であってもよい。
図7を参照して、実施の形態4に係る半導体装置は、複数の挿入回路220(図6:実施の形態3)に代わって、複数の挿入回路230を有している。複数の挿入回路230の各々、言い換えれば第1挿入回路231および第2挿入回路232の各々、は、第1ダイオードD1および第2ダイオードD2に並列に接続された抵抗素子R5を含む。挿入回路220が寄生発振を抑制する効果を十分に維持するためには、抵抗素子R5の大きさは、第1抵抗素子R1および第2抵抗素子R2の大きさに比して十分に大きいことが望ましい。
Claims (9)
- 互いに並列に接続され、各々がゲート電極を有し、複数の第1半導体素子および複数の第2半導体素子を含む複数の半導体素子と、
前記複数の半導体素子の各々のゲート電極へゲート信号を供給するためのものであって、主回路と、第1挿入回路および第2挿入回路を含む複数の挿入回路と、を有する駆動回路と、
を備え、前記第1挿入回路は前記主回路と前記複数の第1半導体素子との間に挿入されており、前記第2挿入回路は前記主回路と前記複数の第2半導体素子との間に挿入されており、前記第1挿入回路および前記第2挿入回路の各々は、前記主回路に向かって順方向を有する第1ダイオードと、前記第1ダイオードに逆並列に接続された第2ダイオードとを含み、
前記複数の第1半導体素子および前記複数の第2半導体素子の各々は、複数の半導体チップによって構成されている、半導体装置。 - 互いに並列に接続され、各々がゲート電極を有し、複数の第1半導体素子および複数の第2半導体素子を含む複数の半導体素子と、
前記複数の半導体素子の各々のゲート電極へゲート信号を供給するためのものであって、主回路と、第1挿入回路および第2挿入回路を含む複数の挿入回路と、を有する駆動回路と、
複数の還流ダイオードと、
を備え、前記複数の半導体素子の各々に、前記複数の還流ダイオードのうち対応する還流ダイオードが接続されており、前記第1挿入回路は前記主回路と前記複数の第1半導体素子との間に挿入されており、前記第2挿入回路は前記主回路と前記複数の第2半導体素子との間に挿入されており、前記第1挿入回路および前記第2挿入回路の各々は、前記主回路に向かって順方向を有する第1ダイオードと、前記第1ダイオードに逆並列に接続された第2ダイオードとを含む、半導体装置。 - 前記複数の半導体素子は個別の半導体チップによって構成されている、請求項2に記載の半導体装置。
- 前記駆動回路と、前記複数の半導体素子の各々との間に、ゲート抵抗素子をさらに備える、請求項1から3のいずれか1項に記載の半導体装置。
- 互いに並列に接続され、各々がゲート電極を有し、複数の第1半導体素子および複数の第2半導体素子を含む複数の半導体素子と、
前記複数の半導体素子の各々のゲート電極へゲート信号を供給するためのものであって、主回路と、第1挿入回路および第2挿入回路を含む複数の挿入回路と、を有する駆動回路と、
を備え、前記第1挿入回路は前記主回路と前記複数の第1半導体素子との間に挿入されており、前記第2挿入回路は前記主回路と前記複数の第2半導体素子との間に挿入されており、前記第1挿入回路および前記第2挿入回路の各々は、前記主回路に向かって順方向を有する第1ダイオードと、前記第1ダイオードに逆並列に接続された第2ダイオードとを含み、
前記複数の第1半導体素子のための複数の第1ゲート抵抗素子と、前記複数の第2半導体素子のための複数の第2ゲート抵抗素子と、をさらに備え、
前記複数の第1半導体素子の各々に、前記複数の第1ゲート抵抗素子のうち対応するゲート抵抗素子が接続されており、前記複数の第1半導体素子は、前記第1ゲート抵抗素子が別個に付加された複数の第1半導体チップによって構成されており、
前記複数の第2半導体素子の各々に、前記複数の第2ゲート抵抗素子のうち対応するゲート抵抗素子が接続されており、前記複数の第2半導体素子は、前記第2ゲート抵抗素子が別個に付加された複数の第2半導体チップによって構成されている、
半導体装置。 - 前記複数の挿入回路の各々は、前記第1ダイオードに直列かつ前記第2ダイオードに並列に接続された第1抵抗素子と、前記第2ダイオードに直列かつ前記第1ダイオードに並列に接続された第2抵抗素子とを含む、請求項1から5のいずれか1項に記載の半導体装置。
- 前記複数の挿入回路の各々は、前記第1ダイオードおよび前記第2ダイオードに並列に接続された抵抗素子を含む、請求項1から6のいずれか1項に記載の半導体装置。
- 前記複数の第1半導体素子は複数の炭化珪素半導体素子であり、前記複数の第2半導体素子は複数の炭化珪素半導体素子である、請求項1から7のいずれか1項に記載の半導体装置。
- 前記複数の半導体素子が搭載される第1基板と、
前記複数の挿入回路が搭載される第2基板と、
前記第1基板および前記第2基板を収めるケースと、
をさらに備える、請求項1から8のいずれか1項に記載の半導体装置。
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