JP4438535B2 - 電圧検出器 - Google Patents
電圧検出器 Download PDFInfo
- Publication number
- JP4438535B2 JP4438535B2 JP2004198545A JP2004198545A JP4438535B2 JP 4438535 B2 JP4438535 B2 JP 4438535B2 JP 2004198545 A JP2004198545 A JP 2004198545A JP 2004198545 A JP2004198545 A JP 2004198545A JP 4438535 B2 JP4438535 B2 JP 4438535B2
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- Japan
- Prior art keywords
- output
- circuit
- voltage
- level
- delay
- Prior art date
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- Measurement Of Current Or Voltage (AREA)
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 (1)
- 基準電圧と、コンパレータと、遅延回路と、ラッチ回路と、電源変動があった時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と、を備えた遅延付き電圧検出器であって、
前記出力固定回路は、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、
前記スイッチトランジスタは、前記コンパレータの出力と前記定電流インバータ回路の出力とを入力する前記論理回路の出力によって、前記定電流インバータ回路を構成する定電流回路を短絡する、
ことを特徴とする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 |
---|---|
JP2006017683A JP2006017683A (ja) | 2006-01-19 |
JP4438535B2 true JP4438535B2 (ja) | 2010-03-24 |
Family
ID=35792101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004198545A Expired - Fee Related JP4438535B2 (ja) | 2004-07-05 | 2004-07-05 | 電圧検出器 |
Country Status (1)
Country | Link |
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JP (1) | JP4438535B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4864730B2 (ja) * | 2007-01-05 | 2012-02-01 | ルネサスエレクトロニクス株式会社 | 電池電圧監視装置 |
JP5703657B2 (ja) * | 2010-09-24 | 2015-04-22 | 日産自動車株式会社 | 電圧検出器及び電圧検出方法 |
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 |
-
2004
- 2004-07-05 JP JP2004198545A patent/JP4438535B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2006017683A (ja) | 2006-01-19 |
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