JP2005157743A5 - - Google Patents
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- JP2005157743A5 JP2005157743A5 JP2003395402A JP2003395402A JP2005157743A5 JP 2005157743 A5 JP2005157743 A5 JP 2005157743A5 JP 2003395402 A JP2003395402 A JP 2003395402A JP 2003395402 A JP2003395402 A JP 2003395402A JP 2005157743 A5 JP2005157743 A5 JP 2005157743A5
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- Japan
- Prior art keywords
- current
- load
- load driving
- driving device
- input
- Prior art date
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Claims (9)
入力電圧を検出する入力電圧検出手段を備え、
上記入力電圧検出手段により検出した入力電圧に応じて上記電流制限手段における電流制限値を切り替えることを特徴とする負荷駆動装置。 In the load driving device provided with the current limiting means for supplying power to the load and limiting the current to the load,
An input voltage detection means for detecting the input voltage,
A load driving device characterized in that the current limiting value in the current limiting means is switched in accordance with the input voltage detected by the input voltage detecting means.
出力トランジスタに直列に挿入された抵抗と、
上記抵抗により検出された出力電流を基準値と比較する比較手段とよりなり、
上記入力電圧検出手段の出力により上記基準値を切り替えることを特徴とする請求項１に記載の負荷駆動装置。 The current limiting means is
A resistor inserted in series with the output transistor;
Comparing means for comparing the output current detected by the resistor with a reference value,
2. The load driving device according to claim 1, wherein the reference value is switched by an output of the input voltage detecting means.
出力トランジスタとカレントミラーを構成するトランジスタにより検出された電流が入力される抵抗と、
上記抵抗により検出された電圧を基準値と比較する比較手段とよりなり、
上記入力電圧検出手段の出力により上記抵抗の抵抗値を切り替えることを特徴とする請求項１に記載の負荷駆動装置。 The current limiting means is
A resistor to which a current detected by an output transistor and a transistor constituting a current mirror is input;
Comparing means for comparing the voltage detected by the resistor with a reference value,
2. The load driving device according to claim 1, wherein a resistance value of the resistor is switched by an output of the input voltage detecting means.
上記入力電圧検出手段の出力により電流制限値を段階的に切り替えることを特徴とする、請求項１〜請求項３のいずれかに記載の負荷駆動装置。 The input voltage detection means has a plurality of input voltage detection levels;
The load driving device according to any one of claims 1 to 3, wherein the current limit value is switched in a stepwise manner according to an output of the input voltage detecting means.
入出力電圧差を検出する入出力電圧差検出手段を備え、Provided with input / output voltage difference detection means for detecting input / output voltage difference,
上記入出力電圧差検出手段の出力により上記電流制限手段における電流制限値を切り替えることを特徴とする負荷駆動装置。A load driving device, wherein the current limiting value in the current limiting means is switched by the output of the input / output voltage difference detecting means.
入力電圧に応じて上記電流制限手段の電流制限値を変化させる電流制限値制御手段を備えたことを特徴とする負荷駆動装置。A load driving apparatus comprising current limit value control means for changing a current limit value of the current limit means in accordance with an input voltage.
入出力電圧の差に応じて上記電流制限手段の電流制限値を変化させる電流制限値制御手段を備えたことを特徴とする負荷駆動装置。A load driving device comprising current limit value control means for changing a current limit value of the current limit means according to a difference between input and output voltages.
各負荷駆動装置の動作を停止する信号により他の負荷駆動装置の電流制限手段の電流制限値を切り替えることを特徴とする負荷駆動システム。A load driving system, wherein a current limiting value of a current limiting means of another load driving device is switched by a signal for stopping the operation of each load driving device.
各負荷駆動装置の入力を検知する入力検知手段を備え、Provided with input detection means for detecting the input of each load driving device,
上記入力検知手段が複数の入力検知レベルを有し、The input detection means has a plurality of input detection levels;
上記入力検知手段の出力により他の負荷駆動装置の電流制限手段の電流制限値を段階的に切り替えることを特徴とする負荷駆動システム。A load driving system characterized in that the current limiting value of the current limiting means of another load driving device is switched stepwise by the output of the input detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003395402A JP2005157743A (en) | 2003-11-26 | 2003-11-26 | Load driving apparatus and load drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003395402A JP2005157743A (en) | 2003-11-26 | 2003-11-26 | Load driving apparatus and load drive system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005157743A JP2005157743A (en) | 2005-06-16 |
| JP2005157743A5 true JP2005157743A5 (en) | 2007-02-01 |
Family
ID=34721186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003395402A Pending JP2005157743A (en) | 2003-11-26 | 2003-11-26 | Load driving apparatus and load drive system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2005157743A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008117176A (en) | 2006-11-06 | 2008-05-22 | Seiko Instruments Inc | Voltage control circuit |
| JP5315741B2 (en) * | 2008-03-24 | 2013-10-16 | セイコーエプソン株式会社 | Control circuit provided in switching power supply circuit |
| KR100847515B1 (en) * | 2008-05-20 | 2008-07-21 | 성열규 | Exercise device load system and which has the exercise device |
| JP5319982B2 (en) * | 2008-08-18 | 2013-10-16 | ローム株式会社 | Semiconductor device |
| JP2010217965A (en) * | 2009-03-13 | 2010-09-30 | Asahi Kasei Toko Power Device Corp | Constant voltage circuit |
| JP2011039578A (en) * | 2009-08-06 | 2011-02-24 | Minebea Co Ltd | Power supply unit |
| KR101062600B1 (en) * | 2009-08-25 | 2011-09-06 | 에스엘 주식회사 | Open or short detection circuit with high voltage limit |
| JP2011078228A (en) * | 2009-09-30 | 2011-04-14 | Minebea Co Ltd | Overcurrent protection circuit |
| JP2011166987A (en) * | 2010-02-12 | 2011-08-25 | Fuji Electric Co Ltd | Power supply apparatus |
| JP2013196177A (en) * | 2012-03-16 | 2013-09-30 | Ricoh Co Ltd | Power supply circuit and electronic apparatus with the same |
| US9041367B2 (en) * | 2013-03-14 | 2015-05-26 | Freescale Semiconductor, Inc. | Voltage regulator with current limiter |
| JP2014100063A (en) * | 2014-03-03 | 2014-05-29 | Fuji Electric Co Ltd | Power supply device |
| JP2015172904A (en) * | 2014-03-12 | 2015-10-01 | 株式会社東芝 | Ldo type voltage regulator and power receiver |
| JP6785705B2 (en) * | 2017-03-31 | 2020-11-18 | エイブリック株式会社 | Overcurrent protection circuit and voltage regulator |
| CN112558679A (en) * | 2019-09-25 | 2021-03-26 | 圣邦微电子（北京）股份有限公司 | Current-limiting protection circuit |
| WO2023276491A1 (en) * | 2021-06-29 | 2023-01-05 | ローム株式会社 | Overcurrent protection circuit and semiconductor device |
-
2003
- 2003-11-26 JP JP2003395402A patent/JP2005157743A/en active Pending
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