JP2006017683A - 電圧検出器 - Google Patents
電圧検出器 Download PDFInfo
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- JP2006017683A JP2006017683A JP2004198545A JP2004198545A JP2006017683A JP 2006017683 A JP2006017683 A JP 2006017683A JP 2004198545 A JP2004198545 A JP 2004198545A JP 2004198545 A JP2004198545 A JP 2004198545A JP 2006017683 A JP2006017683 A JP 2006017683A
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Abstract
【解決手段】 電源投入直後の初期期間に、ラッチ回路の出力電圧を”Lo”レベルに固定するための出力固定回路を設けた。さらに、ラッチ回路の出力電圧を、セット信号発生時より長く固定し、リセット信号発生時より早く開放する出力固定回路とした。
【選択図】 図1
Description
次に検出状態から電圧VDDが徐々に上がり解除電圧Vresetに達すると、コンパレータ105の出力106が反転し“Hi”レベルとなる。この時点ではラッチ回路107の出力108は“Lo”レベルには反転せず、“Hi”レベルを保持している。このとき遅延回路111が動作し内部ロジックもしくは容量値で決定される解除遅延時間TD(S)後、遅延回路111の出力112は“Lo”レベルとなる。
102 検出抵抗
103 抵抗分圧出力
104 基準電圧
105 コンパレータ
106 コンパレータ出力
107 ラッチ回路
108 ラッチ回路出力
109 出力電圧
110,224,426 スイッチトランジスタ
111 遅延回路
112 遅延回路の出力
113 出力バッファ回路
114 NOR型論理回路
115,116,428 NAND型論理回路
117,118,427 反転論理回路
119 出力固定回路
220 電源端子
221 定電流インバータ回路
222 容量
223 定電流
225 出力固定回路の出力
Claims (4)
- 基準電圧とコンパレータと遅延回路とラッチ回路とからなる遅延付き電圧検出器において、電源投入直後の初期期間に、前記ラッチ回路の出力電圧を固定するための出力固定回路を有する遅延付き電圧検出器。
- 前記出力固定回路が、定電流インバータ回路と容量で構成される請求項1記載の遅延付き電圧検出器。
- 前記出力固定回路が、定電流インバータ回路と容量とスイッチトランジスタと論理回路で構成される請求項1記載の遅延付き電圧検出器。
- 前記出力固定回路は、前記ラッチ回路の出力電圧をセット信号発生時より長く固定しリセット信号発生時より早く開放する請求項1記載の遅延付き電圧検出器。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004198545A JP4438535B2 (ja) | 2004-07-05 | 2004-07-05 | 電圧検出器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004198545A JP4438535B2 (ja) | 2004-07-05 | 2004-07-05 | 電圧検出器 |
Publications (2)
Publication Number | Publication Date |
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JP2006017683A true JP2006017683A (ja) | 2006-01-19 |
JP4438535B2 JP4438535B2 (ja) | 2010-03-24 |
Family
ID=35792101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004198545A Expired - Fee Related JP4438535B2 (ja) | 2004-07-05 | 2004-07-05 | 電圧検出器 |
Country Status (1)
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JP (1) | JP4438535B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008164567A (ja) * | 2007-01-05 | 2008-07-17 | Nec Electronics Corp | 電池電圧監視装置 |
JP2012068128A (ja) * | 2010-09-24 | 2012-04-05 | Nissan Motor Co Ltd | 電圧検出器及び電圧検出方法 |
CN117713782A (zh) * | 2024-02-04 | 2024-03-15 | 成都电科星拓科技有限公司 | 上电复位电路 |
-
2004
- 2004-07-05 JP JP2004198545A patent/JP4438535B2/ja not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008164567A (ja) * | 2007-01-05 | 2008-07-17 | Nec Electronics Corp | 電池電圧監視装置 |
JP2012068128A (ja) * | 2010-09-24 | 2012-04-05 | Nissan Motor Co Ltd | 電圧検出器及び電圧検出方法 |
CN117713782A (zh) * | 2024-02-04 | 2024-03-15 | 成都电科星拓科技有限公司 | 上电复位电路 |
CN117713782B (zh) * | 2024-02-04 | 2024-04-26 | 成都电科星拓科技有限公司 | 上电复位电路 |
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JP4438535B2 (ja) | 2010-03-24 |
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