JP6640639B2 - 半導体デバイス及び半導体装置 - Google Patents
半導体デバイス及び半導体装置 Download PDFInfo
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- JP6640639B2 JP6640639B2 JP2016070540A JP2016070540A JP6640639B2 JP 6640639 B2 JP6640639 B2 JP 6640639B2 JP 2016070540 A JP2016070540 A JP 2016070540A JP 2016070540 A JP2016070540 A JP 2016070540A JP 6640639 B2 JP6640639 B2 JP 6640639B2
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- temperature detection
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- diode
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- Inverter Devices (AREA)
Description
実施の形態の説明に先立って、実施の形態の概要について説明する。図1は、実施の形態にかかる半導体装置1000の回路構成を示す図である。実施の形態にかかる半導体装置1000は、半導体デバイス100と、ハイサイド制御回路200と、ロウサイド制御回路300と、ハイサイド温度検出回路400と、ロウサイド温度検出回路500と、MCU600と、を備えている。なお、図1の例では、ハイサイドスイッチのみならず、ロウサイドスイッチにも半導体デバイス100を用いているが、ロウサイドスイッチには半導体デバイス100を用いなくてもよい。ロウサイドスイッチとして、例えば図27のロウサイドスイッチLSWu,LSWv,LSWwを用いてもよい。なお、ハイサイド制御回路200と、ロウサイド制御回路300と、ロウサイド温度検出回路500と、MCU600は、図27の回路構成と同様であり、説明を省略する。
図8は、実施の形態1にかかる半導体デバイス100Aの断面構造の一例を示す図である。実施の形態1にかかる半導体デバイス100Aは、パワーデバイス11のパワーラインと温度検出ダイオード12との絶縁性を確保するデバイス構造18Aを備えている。その他の点については、実施の形態の概要にて説明した半導体デバイス100と同様であるため、説明を省略する。
図14は、実施の形態2にかかる半導体デバイス100Bの断面構造の一例を示す図である。実施の形態2にかかる半導体デバイス100Bは、パワーデバイス11のパワーラインと温度検出ダイオード12との絶縁性を確保するデバイス構造18Bを備えている。その他の点については、実施の形態の概要にて説明した半導体デバイス100と同様であるため、説明を省略する。
図14の半導体デバイス100Bでは、温度検出ダイオード12が酸化膜35上に形成される例を示しているが、これに限らない。図17の半導体デバイス100Cように、P層22B内部、すなわちシリコン内部に温度検出ダイオードを形成しても同様の効果を得ることができる。なお、図17の例では、P層22Bに、P型領域46及びN型領域47が形成されている。
図20は、実施の形態3にかかる半導体デバイス100Dの断面構造の一例を示す図である。実施の形態3にかかる半導体デバイス100Dは、パワーデバイス11のパワーラインと温度検出ダイオード12との絶縁性を確保するデバイス構造18Cを備えている。その他の点については、実施の形態の概要にて説明した半導体デバイス100と同様であるため、説明を省略する。
図20の半導体デバイス100Dでは、温度検出ダイオード12が酸化膜35上に形成される例を示しているが、これに限らない。図24の半導体デバイス100Eように、P層22B内部、すなわちシリコン内部に温度検出ダイオードを形成しても同様の効果を得ることができる。なお、図24の例では、P層22Bに、P型領域46及びN型領域47が形成されている。
11 パワーデバイス
12 温度検出ダイオード
14 エミッタ電極
17 カソード電極
18、18A、18B、18C デバイス構造
22、22A、22B P層
30、35 酸化膜
40 リング構造
50 抵抗
100、100A、100B、100C、100D、100E 半導体デバイス
200 ハイサイド制御回路
300 ロウサイド制御回路
400 ハイサイド温度検出回路
500 ロウサイド温度検出回路
600 MCU
1000 半導体装置
Claims (11)
- パワーデバイスと、
温度検出ダイオードと、を備え、
前記パワーデバイスのパワーラインと前記温度検出ダイオードとの絶縁性を確保するデバイス構造を有し、
前記デバイス構造は、前記パワーデバイスのパワーラインと前記温度検出ダイオードとの間にリング構造を有し、
前記温度検出ダイオードは、第1の導電型の層に接する酸化膜上に形成される、
半導体デバイス。 - 前記第1の導電型の層は、前記パワーラインを構成し、
前記デバイス構造は、
前記酸化膜を、当該酸化膜にかかる電界強度が6MV/cm以下となる厚さとしたものである、
請求項1に記載の半導体デバイス。 - 前記温度検出ダイオードは、シリコン内部に形成される、請求項1に記載の半導体デバイス。
- パワーデバイスと、
温度検出ダイオードと、を備え、
前記パワーデバイスのパワーラインと前記温度検出ダイオードとの絶縁性を確保するデバイス構造を有し、
前記デバイス構造は、前記パワーデバイスのパワーラインを構成する金属電極と前記温度検出ダイオードのカソード電極との間に、抵抗を有し、
前記抵抗は、リーク電流が10μA以下になる抵抗値である、
半導体デバイス。 - 前記抵抗は、ポリシリコンにより形成されたものである、請求項4に記載の半導体デバイス。
- 前記温度検出ダイオードは、第1の導電型の層に接する酸化膜上に形成される、請求項4に記載の半導体デバイス。
- パワーデバイスと、
温度検出ダイオードと、を備え、
前記パワーデバイスのパワーラインと前記温度検出ダイオードとの絶縁性を確保するデバイス構造を有し、
前記デバイス構造は、前記パワーデバイスのパワーラインを構成する金属電極と前記温度検出ダイオードのカソード電極との間に、抵抗を有し、
前記温度検出ダイオードは、シリコン内部に形成される、
半導体デバイス。 - 前記温度検出ダイオードは、半導体チップの端に配置される、請求項1に記載の半導体デバイス。
- 前記温度検出ダイオードは、半導体チップの中央に配置される、請求項1に記載の半導体デバイス。
- 前記パワーデバイスは、IGBT(Insulated Gate Bipolar Transistor)、パワーMOSFET(Metal−Oxide−Semiconductor Field Effect Transistor)、ダイオード、又はサイリスタである、請求項1に記載の半導体デバイス。
- 半導体デバイスと、ハイサイド制御回路と、ロウサイド制御回路と、ハイサイド温度検出回路と、ロウサイド温度検出回路と、MCU(Micro Control Unit)と、を備える半導体装置であって、
前記半導体デバイスは、
パワーデバイスと、
温度検出ダイオードと、を備え、
前記パワーデバイスのパワーラインと前記温度検出ダイオードとの絶縁性を確保するデバイス構造を有し、
前記デバイス構造は、前記パワーデバイスのパワーラインと前記温度検出ダイオードとの間にリング構造を有し、
前記温度検出ダイオードは、第1の導電型の層に接する酸化膜上に形成される、
半導体装置。
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