JP6680102B2 - 半導体集積回路装置 - Google Patents
半導体集積回路装置 Download PDFInfo
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- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
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- H10D89/601—Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD] for devices having insulated gate electrodes, e.g. for IGFETs or IGBTs
- H10D89/811—Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD] for devices having insulated gate electrodes, e.g. for IGFETs or IGBTs using FETs as protective elements
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- H10D89/601—Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD] for devices having insulated gate electrodes, e.g. for IGFETs or IGBTs
- H10D89/811—Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD] for devices having insulated gate electrodes, e.g. for IGFETs or IGBTs using FETs as protective elements
- H10D89/819—Bias arrangements for gate electrodes of FETs, e.g. RC networks or voltage partitioning circuits
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Description
実施の形態にかかる半導体集積回路装置の回路構成について説明する。図1は、実施の形態にかかる半導体集積回路装置の回路構成を示す回路図である。図1に示す半導体集積回路装置は、保護回路1と、保護回路1の保護対象である集積回路5と、を同一の半導体基板上に備える。保護回路1は、分圧手段2、信号発生手段3およびスイッチング手段4を備える。
2 分圧手段
3 信号発生手段
4 スイッチング手段
5 集積回路
6,8,21,33 抵抗素子
7,9,10,22 ツェナーダイオード
11 外部電源端子
12 接地端子
13 内部電源端子
23 分圧手段の分圧点
31 第1のPMOS
32 第1のPDMOS
34 第1のPDMOSのドレイン端子と第2の抵抗素子との接続点
41 第2のPMOS
42 第2のPDMOS
43 第2のPDMOSのドレイン端子と内部電源端子との接続点
51〜55 ノード
51a, 51b, 52a,52b, 53a, 54a, 55a 電圧源の逆接続時に形成される可能性のある電流経路
61〜65 寄生ダイオード
70 p-型半導体基板
70a 基板裏面側のp-型領域
71 p型ウェル領域
72 p+型コンタクト領域
73,87,98 コンタクト電極
74 n-型ウェル領域
75 局部酸化膜
81,91 n型ボディ領域
81a,91a チャネル部
82,92 n+型コンタクト領域
83,93 p+型ソース領域
84,95 p+型ドレイン領域
85,96 ゲート絶縁膜
86,97 ゲート電極
88,99 ソース電極
89,100 ドレイン電極
94 p型オフセット領域
B バックゲート端子
D ドレイン端子
G ゲート端子
GND 接地電圧
Idd 定常時に流れる電流
S ソース端子
Vcc 電源電圧
Vdd 内部電源電圧
Vga 分圧手段の分圧点の電圧(第1のPMOSおよび第1のPDMOSのゲート電圧)
Vgb 第1のPDMOSのドレイン端子と第2の抵抗素子との接続点の電圧(第2のPMOSおよび第2のPDMOSのゲート電圧)
Vr 分圧手段のツェナーダイオードのブレークダウン電圧
Vth 第1のPDMOSのゲート閾値電圧
Claims (10)
- 定常時に外部から電源電圧が供給される外部電源端子と、
定常時に外部から接地電圧が供給される接地端子と、
定常時に外部から供給される前記電源電圧を保護対象である集積回路に供給する内部電源端子と、
前記外部電源端子と前記接地端子との間に接続され、かつ前記外部電源端子から供給される電圧を分圧する分圧手段と、
前記外部電源端子と前記接地端子との間に接続され、かつ前記分圧手段の分圧点の電圧に応じて、前記電源電圧または前記接地電圧のいずれか一方の電圧を出力する、前記分圧点と接続されるゲート端子を入力端子とし、かつドレイン端子を出力端子とする第1の絶縁ゲート型電界効果トランジスタのドレイン端子に、第1の抵抗素子の一端を接続することによって当該第1の絶縁ゲート型電界効果トランジスタと直列に接続された直列接続体よりなるインバータ回路を備えた信号発生手段と、
前記外部電源端子と前記接地端子との間に接続され、ドレイン端子が前記内部電源端子に接続され、かつゲート端子が前記第1の絶縁ゲート型電界効果トランジスタのドレイン端子と前記第1の抵抗素子の一端との第1の接続点に接続された第2の絶縁ゲート型電界効果トランジスタを備え、前記信号発生手段の出力に応じてスイッチングするスイッチング手段と、
を具備し、
前記信号発生手段は、さらに、ドレイン端子が前記外部電源端子に接続され、ソース端子が前記第1の絶縁ゲート型電界効果トランジスタのソース端子に接続され、かつゲート端子が前記分圧点に接続された第3の絶縁ゲート型電界効果トランジスタを備え、
前記スイッチング手段は、さらに、ドレイン端子が前記外部電源端子に接続され、ソース端子が前記第2の絶縁ゲート型電界効果トランジスタのソース端子に接続され、かつゲート端子が前記第1の接続点に接続された第4の絶縁ゲート型電界効果トランジスタを備えることを特徴とする半導体集積回路装置。 - 前記第3の絶縁ゲート型電界効果トランジスタは、エンハンスメント型のpチャネル型の絶縁ゲート型電界効果トランジスタであることを特徴とする請求項1に記載の半導体集積回路装置。
- 前記第4の絶縁ゲート型電界効果トランジスタは、エンハンスメント型のpチャネル型の絶縁ゲート型電界効果トランジスタであることを特徴とする請求項1または2に記載の半導体集積回路装置。
- 前記第3の絶縁ゲート型電界効果トランジスタは、デプレッション型のpチャネル型の絶縁ゲート型電界効果トランジスタであることを特徴とする請求項1に記載の半導体集積回路装置。
- 前記第4の絶縁ゲート型電界効果トランジスタは、デプレッション型のpチャネル型の絶縁ゲート型電界効果トランジスタであることを特徴とする請求項1または2に記載の半導体集積回路装置。
- 前記第4の絶縁ゲート型電界効果トランジスタのゲート閾値電圧は、前記外部電源端子に外部から前記接地電圧が供給され、かつ前記接地端子に外部から前記電源電圧が供給されたときに、ゲート端子にかかる電圧がソース端子にかかる電圧よりも高くなるように設定されることを特徴とする請求項4または5に記載の半導体集積回路装置。
- 前記第1の絶縁ゲート型電界効果トランジスタおよび前記第2の絶縁ゲート型電界効果トランジスタは、エンハンスメント型のpチャネル型絶縁ゲート型電界効果トランジスタであることを特徴とする請求項1〜6のいずれか一つに記載の半導体集積回路装置。
- 前記分圧手段は、第2の抵抗素子にツェナーダイオードが直列に接続された直列接続体からなり、
前記ツェナーダイオードのブレークダウン電圧は、前記集積回路の最大定格電圧以下であることを特徴とする請求項1〜7のいずれか一つに記載の半導体集積回路装置。 - 前記集積回路は、複数の絶縁ゲート型電界効果トランジスタで構成されることを特徴とする請求項1〜8のいずれか一つに記載の半導体集積回路装置。
- 前記分圧手段、前記信号発生手段および前記スイッチング手段は前記集積回路と同一半導体基板上に配置されていることを特徴とする請求項1〜9のいずれか一つに記載の半導体集積回路装置。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016120281A JP6680102B2 (ja) | 2016-06-16 | 2016-06-16 | 半導体集積回路装置 |
| CN201710363938.3A CN107527904B (zh) | 2016-06-16 | 2017-05-22 | 半导体集成电路装置 |
| US15/609,535 US10381827B2 (en) | 2016-06-16 | 2017-05-31 | Semiconductor integrated circuit device |
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| JP2016120281A JP6680102B2 (ja) | 2016-06-16 | 2016-06-16 | 半導体集積回路装置 |
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| JP2017224769A JP2017224769A (ja) | 2017-12-21 |
| JP6680102B2 true JP6680102B2 (ja) | 2020-04-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI653799B (zh) * | 2017-09-27 | 2019-03-11 | 瑞昱半導體股份有限公司 | 能夠避免過電壓之損害的電路 |
| TWI647909B (zh) * | 2018-01-19 | 2019-01-11 | 立積電子股份有限公司 | 開關裝置 |
| CN108599124B (zh) * | 2018-05-03 | 2019-11-26 | 北京市科通电子继电器总厂有限公司 | 开关器件的控制电路、系统及集成电路 |
| RU2713559C9 (ru) * | 2018-05-08 | 2021-02-04 | Евгений Леонидович Пущин | Способ быстрого включения силового транзистора с изолированным затвором и устройства с его использованием |
| TWI654733B (zh) * | 2018-06-04 | 2019-03-21 | 茂達電子股份有限公司 | 靜電放電保護電路 |
| US10749019B2 (en) * | 2018-07-03 | 2020-08-18 | Semiconductor Components Industries, Llc | Circuit and electronic device including an enhancement-mode transistor |
| JP7055714B2 (ja) * | 2018-07-11 | 2022-04-18 | 株式会社東芝 | 半導体装置 |
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| US10381827B2 (en) | 2019-08-13 |
| JP2017224769A (ja) | 2017-12-21 |
| US20170366004A1 (en) | 2017-12-21 |
| CN107527904B (zh) | 2023-08-11 |
| CN107527904A (zh) | 2017-12-29 |
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