JP7405504B2 - リニア電源回路及び車両 - Google Patents
リニア電源回路及び車両 Download PDFInfo
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- JP7405504B2 JP7405504B2 JP2018205813A JP2018205813A JP7405504B2 JP 7405504 B2 JP7405504 B2 JP 7405504B2 JP 2018205813 A JP2018205813 A JP 2018205813A JP 2018205813 A JP2018205813 A JP 2018205813A JP 7405504 B2 JP7405504 B2 JP 7405504B2
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- 239000003990 capacitor Substances 0.000 claims description 18
- 230000015556 catabolic process Effects 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 15
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- 101000685663 Homo sapiens Sodium/nucleoside cotransporter 1 Proteins 0.000 description 1
- 102100023116 Sodium/nucleoside cotransporter 1 Human genes 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
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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
- G05F1/59—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 including plural semiconductor devices as final control devices for a single 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
- G05F1/575—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
- H03F3/45273—Mirror types
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/375—Circuitry to compensate the offset being present in an amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45101—Control of the DC level being present
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45212—Indexing scheme relating to differential amplifiers the differential amplifier being designed to have a reduced offset
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45528—Indexing scheme relating to differential amplifiers the FBC comprising one or more passive resistors and being coupled between the LC and the IC
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45586—Indexing scheme relating to differential amplifiers the IC comprising offset generating means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Amplifiers (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
図1は、一実施形態に係る差動増幅器の概略構成を示す図である。差動増幅器100は、第1電圧V1が印加される反転入力端子101と、第1電圧V1に略比例する第2電圧V2が印加される非反転入力端子102と、反転入力端子101と非反転入力端子102間に所定の入力オフセット電圧を発生させるオフセット部103と、入力オフセット電圧が発生しない理想的な差動増幅器104と、出力端子105と、を備える。差動増幅器100は、誤差電圧V3を生成し、出力端子105から誤差電圧V3を出力する。
差動増幅器100は例えば各種の電源回路に利用することができる。
図5は、高速応答が可能なリニア電源回路として本発明者が開発したリニア電源回路の一構成例を示す図である。なお、図5において図1と同一の部分には同一の符号を付し詳細な説明を省略する。図5に示すリニア電源回路は、入力端T1と、出力端T2と、出力トランジスタ1と、ドライバ2と、抵抗3~5と、を備える。
図8Aは、高速応答が可能なリニア電源回路として本発明者が開発したリニア電源回路の他の構成例を示す図である。なお、図8Aにおいて図1及び図5と同一の部分には同一の符号を付し詳細な説明を省略する。
図9は、車両Xの外観図である。本構成例の車両Xは、不図示のバッテリから出力される電圧の供給を受けて動作する種々の電子機器X11~X18を搭載している。なお、本図における電子機器X11~X18の搭載位置は、図示の便宜上、実際とは異なる場合がある。
上記実施形態は、全ての点で例示であって、制限的なものではないと考えられるべきであり、本発明の技術的範囲は、上記実施形態の説明ではなく、特許請求の範囲によって示されるものであり、特許請求の範囲と均等の意味及び範囲内に属する全ての変更が含まれると理解されるべきである。
2 ドライバ
22、22’ 容量
23 PMOSFET(変換器の一例)
23’ NMOSFET(変換器の他の例)
24 電流増幅器
100、104 差動増幅器
101 反転入力端子
102 非反転入力端子
103 オフセット部
X 車両
Claims (6)
- 入力電圧が印加される入力端と出力電圧が印加される出力端との間に設けられた出力トランジスタと、
前記出力電圧に基づく電圧と基準電圧との差に基づいて前記出力トランジスタを駆動するドライバと、
を備えるリニア電源回路であって、
前記ドライバは、前記出力電圧に基づく電圧と前記基準電圧との差に応じた電圧を出力する差動増幅器と、前記差動増幅器の出力が一端に印加されグランド電位が他端に印加される第1容量と、前記差動増幅器の出力に基づく電圧を電流に変換して出力する変換器と、前記変換器の出力を電流増幅する電流増幅器と、を備え、
前記差動増幅器及び前記変換器の電源電圧が前記出力電圧に依存する電圧であり、
前記差動増幅器は、第1電圧が印加される反転入力端子と、前記第1電圧に略比例する第2電圧が印加される非反転入力端子と、前記反転入力端子と前記非反転入力端子間に所定の入力オフセット電圧を発生させるオフセット部と、を備え、
前記基準電圧は前記入力オフセット電圧に応じた電圧であり、
前記電流増幅器は、電流シンク型カレントミラー回路と電流ソース型カレントミラー回路とをそれぞれ複数備え、
前記電流シンク型カレントミラー回路それぞれのミラー比が5以下であり、
前記電流ソース型カレントミラー回路それぞれのミラー比が5以下である、リニア電源回路。 - 入力電圧が印加される入力端と出力電圧が印加される出力端との間に設けられた出力トランジスタと、
前記出力電圧に基づく電圧と基準電圧との差に基づいて前記出力トランジスタを駆動するドライバと、
を備えるリニア電源回路であって、
前記ドライバは、前記出力電圧に基づく電圧と前記基準電圧との差に応じた電圧を出力する差動増幅器と、前記差動増幅器の出力が一端に印加され前記出力電圧に基づく電圧が他端に印加される第1容量と、前記差動増幅器の出力に基づく電圧を電流に変換して出力する変換器と、前記変換器の出力を電流増幅する電流増幅器と、を備え、
前記差動増幅器の電源電圧が第1定電圧であり、前記電流増幅器の電源電圧が第2定電圧である、又は、前記差動増幅器の電源電圧及び前記電流増幅器の電源電圧が前記入力電圧である、のいずれかであり、
前記差動増幅器は、第1電圧が印加される反転入力端子と、前記第1電圧に略比例する第2電圧が印加される非反転入力端子と、前記反転入力端子と前記非反転入力端子間に所定の入力オフセット電圧を発生させるオフセット部と、を備え、
前記基準電圧は前記入力オフセット電圧に応じた電圧であり、
前記電流増幅器は、電流シンク型カレントミラー回路と電流ソース型カレントミラー回路とをそれぞれ複数備え、
前記電流シンク型カレントミラー回路それぞれのミラー比が5以下であり、
前記電流ソース型カレントミラー回路それぞれのミラー比が5以下である、リニア電源回路。 - 前記電流増幅器の電源電圧が定電圧である、請求項1に記載のリニア電源回路。
- 前記差動増幅器及び前記変換器の耐圧は、前記電流増幅器の耐圧より低い、請求項2又は請求項3に記載のリニア電源回路。
- 前記差動増幅器のゲインは、前記電流増幅器のゲインより小さい、請求項1~4のいずれか一項に記載のリニア電源回路。
- 請求項1~5のいずれか一項に記載のリニア電源回路を備える、車両。
Priority Applications (2)
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JP2018205813A JP7405504B2 (ja) | 2018-10-31 | 2018-10-31 | リニア電源回路及び車両 |
US16/666,084 US11068003B2 (en) | 2018-10-31 | 2019-10-28 | Differential amplifier |
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JP2018205813A JP7405504B2 (ja) | 2018-10-31 | 2018-10-31 | リニア電源回路及び車両 |
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JP2020072399A JP2020072399A (ja) | 2020-05-07 |
JP7405504B2 true JP7405504B2 (ja) | 2023-12-26 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US11550349B2 (en) * | 2018-10-31 | 2023-01-10 | Rohm Co., Ltd. | Linear power supply circuit |
US11338747B2 (en) * | 2018-10-31 | 2022-05-24 | Rohm Co., Ltd. | Linear power supply circuit |
JP7489244B2 (ja) * | 2020-07-09 | 2024-05-23 | ローム株式会社 | リニア電源回路 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8159301B1 (en) | 2010-08-31 | 2012-04-17 | Xilinx, Inc. | Differential amplifier with hysteresis |
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Publication number | Priority date | Publication date | Assignee | Title |
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US6262633B1 (en) * | 2000-04-27 | 2001-07-17 | Analog Devices, Inc. | High output current operational amplifier output stage |
US6369554B1 (en) * | 2000-09-01 | 2002-04-09 | Marvell International, Ltd. | Linear regulator which provides stabilized current flow |
JP4552569B2 (ja) * | 2004-09-13 | 2010-09-29 | ソニー株式会社 | 定電圧電源回路 |
JP2006107295A (ja) * | 2004-10-08 | 2006-04-20 | Matsushita Electric Ind Co Ltd | レギュレータ |
JP4781732B2 (ja) * | 2005-06-24 | 2011-09-28 | 株式会社リコー | 電源システム装置及びその制御方法 |
JP5487880B2 (ja) * | 2009-10-26 | 2014-05-14 | セイコーエプソン株式会社 | レギュレーター、集積回路装置及び電子機器 |
EP2424108B1 (en) * | 2010-08-30 | 2013-12-25 | Onkyo Corporation | Amplifying circuit |
JP2014026610A (ja) * | 2012-07-30 | 2014-02-06 | Seiko Instruments Inc | レギュレータ |
EP3188351B1 (en) * | 2015-12-28 | 2020-12-02 | Rohm Co., Ltd. | Buck converter with duty ratio based fault detection |
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- 2018-10-31 JP JP2018205813A patent/JP7405504B2/ja active Active
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2019
- 2019-10-28 US US16/666,084 patent/US11068003B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US8159301B1 (en) | 2010-08-31 | 2012-04-17 | Xilinx, Inc. | Differential amplifier with hysteresis |
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US20200133323A1 (en) | 2020-04-30 |
US11068003B2 (en) | 2021-07-20 |
JP2020072399A (ja) | 2020-05-07 |
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