JP7096673B2 - レギュレータ - Google Patents
レギュレータ Download PDFInfo
- Publication number
- JP7096673B2 JP7096673B2 JP2018012858A JP2018012858A JP7096673B2 JP 7096673 B2 JP7096673 B2 JP 7096673B2 JP 2018012858 A JP2018012858 A JP 2018012858A JP 2018012858 A JP2018012858 A JP 2018012858A JP 7096673 B2 JP7096673 B2 JP 7096673B2
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- JP
- Japan
- Prior art keywords
- transistor
- voltage
- regulator
- current
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/575—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices characterised by the feedback circuit
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
- G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
- G05F1/445—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being transistors in series with the load
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
実施の形態について説明する前に、比較のための検討例について説明する。図6は、検討例のレギュレータの構成を示す回路図である。
図1は、実施の形態1に係るレギュレータの構成を示す回路図である。図1に示すレギュレータ1は、第1トランジスタM1と、フィードバック回路10と、第2トランジスタM2と、第1抵抗R1と、電流制限回路20とを備える。
図4は、実施の形態2に係るレギュレータの構成を示す回路図である。図4に示すレギュレータ1Aは、第1トランジスタM1と、フィードバック回路10と、第2トランジスタM2と、第1抵抗R1と、電流制限回路20Aとを備える。
図5は、実施の形態3に係るレギュレータの構成を示す回路図である。図5に示すレギュレータ1Bは、第1トランジスタM1と、フィードバック回路10Bと、第2トランジスタM2と、第1抵抗R1と、電流制限回路20Bとを備える。
Claims (2)
- 入力端子と出力端子との間に接続された第1トランジスタと、
出力電圧に比例したフィードバック電圧に応じて前記出力端子の電圧が目標電圧に近づくように前記第1トランジスタの制御電極の制御電圧を制御するフィードバック回路と、
前記第1トランジスタと共通に前記制御電圧が制御電極に印加される第2トランジスタと、
前記入力端子と前記出力端子との間に、前記第2トランジスタと直列に接続された第1抵抗と、
前記第1抵抗の両端に発生する電圧を検出し前記第1トランジスタに流れる電流を制限するように前記制御電圧を変化させる電流制限回路とを備え、
前記第1トランジスタおよび前記第2トランジスタは、ソース電極が互いに接続されたPチャネル型電界効果トランジスタであり、
前記電流制限回路は、
第3トランジスタを備え、
前記第3トランジスタは、ソースが前記第2トランジスタのドレインに接続され、ドレインが前記第1トランジスタおよび前記第2トランジスタのゲートに接続され、ゲート-ソース間に前記第1抵抗の両端に発生する電圧が印加される、Pチャネル型電界効果トランジスタである、レギュレータ。 - 入力端子と出力端子との間に接続された第1トランジスタと、
出力電圧に比例したフィードバック電圧に応じて前記出力端子の電圧が目標電圧に近づくように前記第1トランジスタの制御電極の制御電圧を制御するフィードバック回路と、
前記第1トランジスタと共通に前記制御電圧が制御電極に印加される第2トランジスタと、
前記入力端子と前記出力端子との間に、前記第2トランジスタと直列に接続された第1抵抗と、
前記第1抵抗の両端に発生する電圧を検出し前記第1トランジスタに流れる電流を制限するように前記制御電圧を変化させる電流制限回路とを備え、
前記第1トランジスタおよび前記第2トランジスタは、ソース電極が互いに接続されたPチャネル型電界効果トランジスタであり、
前記電流制限回路は、
ソースが前記第2トランジスタのドレインに接続され、ゲート-ソース間に前記第1抵抗の両端に発生する電圧が印加されるPチャネル型電界効果トランジスタである、第3トランジスタと、
前記第3トランジスタが導通した場合に前記フィードバック回路の出力を上昇させるように前記フィードバック回路を制御する回路とを含む、レギュレータ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018012858A JP7096673B2 (ja) | 2018-01-29 | 2018-01-29 | レギュレータ |
US16/258,917 US10551860B2 (en) | 2018-01-29 | 2019-01-28 | Regulator for reducing power consumption |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018012858A JP7096673B2 (ja) | 2018-01-29 | 2018-01-29 | レギュレータ |
Publications (2)
Publication Number | Publication Date |
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JP2019133266A JP2019133266A (ja) | 2019-08-08 |
JP7096673B2 true JP7096673B2 (ja) | 2022-07-06 |
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JP2018012858A Active JP7096673B2 (ja) | 2018-01-29 | 2018-01-29 | レギュレータ |
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US (1) | US10551860B2 (ja) |
JP (1) | JP7096673B2 (ja) |
Families Citing this family (2)
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JPWO2022244724A1 (ja) * | 2021-05-21 | 2022-11-24 | ||
US11886216B2 (en) | 2021-11-02 | 2024-01-30 | Nxp B.V. | Voltage regulator circuit and method for regulating a voltage |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003186555A (ja) | 2001-12-19 | 2003-07-04 | Matsushita Electric Ind Co Ltd | 電源レギュレータ回路 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3192437B2 (ja) * | 1991-05-02 | 2001-07-30 | 新日本無線株式会社 | 電源用icの短絡保護回路 |
CN1193283C (zh) * | 2001-01-02 | 2005-03-16 | 深圳赛意法微电子有限公司 | 稳压器和限制稳压器输出电流的方法 |
FR2830091B1 (fr) * | 2001-09-25 | 2004-09-10 | St Microelectronics Sa | Regulateur de tension incorporant une resistance de stabilisation et un circuit de limitation du courant de sortie |
JP2003216252A (ja) * | 2001-11-15 | 2003-07-31 | Seiko Instruments Inc | ボルテージレギュレータ |
TW201017359A (en) * | 2008-10-20 | 2010-05-01 | Advanced Analog Technology Inc | Low dropout regulator having a current-limiting mechanism |
JP5895369B2 (ja) | 2011-06-14 | 2016-03-30 | ミツミ電機株式会社 | レギュレータ用半導体集積回路 |
US20160187900A1 (en) * | 2014-12-24 | 2016-06-30 | Kailash Dhiman | Voltage regulator circuit and method for limiting inrush current |
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2018
- 2018-01-29 JP JP2018012858A patent/JP7096673B2/ja active Active
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2019
- 2019-01-28 US US16/258,917 patent/US10551860B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003186555A (ja) | 2001-12-19 | 2003-07-04 | Matsushita Electric Ind Co Ltd | 電源レギュレータ回路 |
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US20190235548A1 (en) | 2019-08-01 |
JP2019133266A (ja) | 2019-08-08 |
US10551860B2 (en) | 2020-02-04 |
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