JP2019080402A - 電源制御装置 - Google Patents
電源制御装置 Download PDFInfo
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- JP2019080402A JP2019080402A JP2017204371A JP2017204371A JP2019080402A JP 2019080402 A JP2019080402 A JP 2019080402A JP 2017204371 A JP2017204371 A JP 2017204371A JP 2017204371 A JP2017204371 A JP 2017204371A JP 2019080402 A JP2019080402 A JP 2019080402A
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- power supply
- voltage
- switch
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- down circuit
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- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 230000005856 abnormality Effects 0.000 description 19
- 230000002159 abnormal effect Effects 0.000 description 18
- 238000001514 detection method Methods 0.000 description 14
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- 239000006096 absorbing agent Substances 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
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- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
Description
Claims (4)
- 電源の電圧を降圧して出力する降圧回路と、
前記降圧回路から電力供給を受けて動作する制御装置と、
前記電源から前記制御装置によって制御される制御対象へ電力供給する供給ライン上に設けたスイッチと、
前記電源から直接に電力供給を受けて前記降圧回路の出力電圧を監視するとともに、前記出力電圧の過電圧を検知すると前記スイッチをオフする監視部とを備えた
ことを特徴とする電源制御装置。 - 前記監視部は、前記出力電圧が下限電圧未満或いは上限電圧以上となると前記スイッチをオフする
ことを特徴とする請求項1に記載の電源制御装置。 - 前記スイッチは、信号ラインを介してハイ信号が入力されるとオンするスイッチであって、
前記監視部は、前記信号ラインに設けた抵抗と、一端が前記信号ラインの途中であって前記抵抗よりも前記スイッチ側に接続される制御ラインとを有し、前記スイッチをオフする場合に前記制御ラインの他端をローレベルにする
ことを特徴とする請求項1または2に記載の電源制御装置。 - 前記監視部は、前記制御ラインの途中に前記制御ラインの一端から他端へ向かう電流のみを許容するダイオードを有する
ことを特徴とする請求項3に記載の電源制御装置。
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JP2017204371A JP6929194B2 (ja) | 2017-10-23 | 2017-10-23 | 電源制御装置 |
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JP2017204371A JP6929194B2 (ja) | 2017-10-23 | 2017-10-23 | 電源制御装置 |
Publications (2)
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JP2019080402A true JP2019080402A (ja) | 2019-05-23 |
JP6929194B2 JP6929194B2 (ja) | 2021-09-01 |
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JP2017204371A Active JP6929194B2 (ja) | 2017-10-23 | 2017-10-23 | 電源制御装置 |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001211059A (ja) * | 2000-01-26 | 2001-08-03 | Toshiba Corp | 半導体スイッチ素子の過電流保護回路 |
JP2003092874A (ja) * | 2001-09-18 | 2003-03-28 | Hitachi Unisia Automotive Ltd | 車両用電源装置 |
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2017
- 2017-10-23 JP JP2017204371A patent/JP6929194B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001211059A (ja) * | 2000-01-26 | 2001-08-03 | Toshiba Corp | 半導体スイッチ素子の過電流保護回路 |
JP2003092874A (ja) * | 2001-09-18 | 2003-03-28 | Hitachi Unisia Automotive Ltd | 車両用電源装置 |
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