JP6630557B2 - ボルテージレギュレータ - Google Patents
ボルテージレギュレータ Download PDFInfo
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- JP6630557B2 JP6630557B2 JP2015238818A JP2015238818A JP6630557B2 JP 6630557 B2 JP6630557 B2 JP 6630557B2 JP 2015238818 A JP2015238818 A JP 2015238818A JP 2015238818 A JP2015238818 A JP 2015238818A JP 6630557 B2 JP6630557 B2 JP 6630557B2
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- 238000013021 overheating Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000036413 temperature sense Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000009966 trimming Methods 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
- G05F1/565—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
- G05F1/569—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 for protection
-
- 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
- G05F1/468—Regulating voltage or current wherein the variable actually regulated by the final control device is dc characterised by reference voltage circuitry, e.g. soft start, remote shutdown
-
- 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
- G05F1/562—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 with a threshold detection shunting the control path of the final control device
-
- 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
- G05F1/567—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 for temperature compensation
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
-
- 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
-
- 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
- G05F1/569—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 for protection
- G05F1/573—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 for protection with overcurrent detector
Description
図3は、従来のボルテージレギュレータ200の回路図である。
ボルテージレギュレータ200は、温度センス回路115、基準電圧回路114、コンパレータ回路103、トランジスタ104及び110とを含む過熱保護回路123を備え、以下のように構成されている。
基準電圧回路114は、基準電圧106とボルテージフォロア回路105とブリーダ抵抗107、108、109からなり、抵抗107と108の接続点から電圧VREFを出力する。
誤差増幅回路116は、該分圧回路からの分圧電圧と基準電圧117の電圧を受け、出力端子が出力トランジスタ111のゲートに接続されている。
図1は、本発明のボルテージレギュレータ100の回路図である。
ボルテージレギュレータ100は、出力トランジスタ(出力ドライバ)18、誤差増幅回路19、基準電圧回路20、抵抗21及び22からなる分圧回路、並びに過熱保護回路23を備え、以下のように構成されている。
かかる構成により、ボルテージレギュレータ100は、通常状態において、出力端子から一定の出力電圧VOUTを出力する。
出力電流モニタ回路17は、電源端子10、誤差増幅回路19の出力端子、及びスイッチ15の一端に接続されている。
基準電圧回路12は、定電流回路31、抵抗32、ボルテージフォロア回路33、ブリーダ抵抗34、35、36、及びスイッチ37により構成されている。
ブリーダ抵抗34、35、36は、ボルテージフォロア回路33の出力と接地端子VSSとの間に接続されている。
定電流回路31と抵抗32の接続点は、ボルテージフォロア回路33の一方の入力端子に接続されている。
基準電圧回路12は、通常状態においては、過熱状態を検出するための所定の温度に対応する所定の電圧値の電圧VREF2を出力している。
上述の通常状態から、電源端子10の電源電圧と出力電圧VOUTの電圧差が大きくなると、電圧差センス回路16のトランジスタ38、スイッチ15、抵抗32を介して電源端子10から接地端子VSSへ電流が流れる。また、出力トランジスタ18に流れる出力電流が大きくなると、出力電流モニタ回路17のトランジスタ39、スイッチ15、抵抗32を介して電源端子10から接地端子VSSへ電流が流れる。
このとき、コンパレータ回路13の出力電圧VCMPがLOWとなったことに基づき、スイッチ15及び37はオフとなる。
11 温度センス回路
12、20 基準電圧回路
13 コンパレータ回路
15,37 スイッチ
16 電圧差センス回路
17出力電流モニタ回路
19 誤差増幅回路
31 定電流回路
33 ボルテージフォロア回路
Claims (5)
- 出力電圧を出力する出力トランジスタと、
第1の基準電圧を生成する第1の基準電圧回路と、
前記出力電圧を分圧して生成された分圧電圧を出力する分圧回路と、
前記第1の基準電圧と前記分圧電圧とが入力され、前記出力電圧を一定にするよう前記出力トランジスタを制御する誤差増幅回路と、
過熱状態を検出して前記出力トランジスタをオフさせる過熱保護回路とを備え、
前記過熱保護回路は、
温度に応じた電圧を出力する温度センス回路と、
電源端子に供給される電源電圧と前記出力電圧の電圧差に応じた電流を出力する電圧差センス回路と、
前記出力トランジスタに流れる電流に応じた電流を出力する出力電流モニタ回路と、
第2の基準電圧を生成する第2の基準電圧回路と、
前記温度センス回路の出力電圧と前記第2の基準電圧とを比較するコンパレータ回路と、
前記コンパレータ回路の比較結果をゲートに受け、前記比較結果が過熱状態を示しているとき、前記出力トランジスタをオフさせる過熱保護トランジスタとを有し、
前記第2の基準電圧回路は、前記電圧差センス回路の出力電流及び前記出力電流モニタ回路の出力電流に基づき、前記第2の基準電圧が制御されることを特徴とするボルテージレギュレータ。 - 前記電圧差センス回路の出力及び前記出力電流モニタ回路の出力と前記第2の基準電圧回路との間に設けられ、前記出力トランジスタがオンしているときにオンし、オフしているときにオフする第1のスイッチをさらに備え、
前記第2の基準電圧回路は、
前記電源端子と前記第1のスイッチの一端との間に接続された定電流回路と、
前記第1のスイッチの一端と接地端子との間に接続された抵抗素子と、
前記第1のスイッチの一端の電圧を入力として受けるボルテージフォロア回路と、
前記ボルテージフォロア回路の出力と接地端子との間に順に接続された第1、第2、及び第3の抵抗を含むブリーダ抵抗と、
一端が前記第2の抵抗と第3の抵抗の接続点に、他端が接地端子に接続され、前記出力トランジスタがオンしているときにオンし、オフしているときにオフする第2のスイッチとを含み、
前記第1の抵抗と前記第2の抵抗の接続点の電圧が前記第2の基準電圧となることを特徴とする請求項1に記載のボルテージレギュレータ。 - 前記電圧差センス回路は、ソースが前記電源端子に接続され、ゲートが前記出力電圧に接続され、ドレインが前記第1のスイッチの一端に接続されたトランジスタを含むことを特徴とする請求項2に記載のボルテージレギュレータ。
- 前記出力電流モニタ回路は、ソースが前記電源端子に接続され、ゲートが前記出力トランジスタのゲートに接続され、ドレインが前記第1のスイッチの一端に接続されたトランジスタを含むことを特徴とする請求項2又は3に記載のボルテージレギュレータ。
- 前記第1及び第2のスイッチは、前記コンパレータ回路の出力により制御されることを特徴とする請求項2乃至4のいずれか一項に記載のボルテージレギュレータ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2015238818A JP6630557B2 (ja) | 2015-12-07 | 2015-12-07 | ボルテージレギュレータ |
TW105139008A TWI695245B (zh) | 2015-12-07 | 2016-11-28 | 電壓調節器 |
US15/367,802 US9829900B2 (en) | 2015-12-07 | 2016-12-02 | Voltage regulator |
KR1020160164414A KR102473993B1 (ko) | 2015-12-07 | 2016-12-05 | 전압 레귤레이터 |
CN201611115559.4A CN106843357B (zh) | 2015-12-07 | 2016-12-07 | 稳压器 |
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JP2015238818A JP6630557B2 (ja) | 2015-12-07 | 2015-12-07 | ボルテージレギュレータ |
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JP6630557B2 true JP6630557B2 (ja) | 2020-01-15 |
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US (1) | US9829900B2 (ja) |
JP (1) | JP6630557B2 (ja) |
KR (1) | KR102473993B1 (ja) |
CN (1) | CN106843357B (ja) |
TW (1) | TWI695245B (ja) |
Families Citing this family (8)
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US10418986B2 (en) * | 2015-12-14 | 2019-09-17 | Monolithic Power Systems, Inc. | Monolithic integrated circuit switch device with output current balancing for parallel-connection |
KR20190015231A (ko) * | 2016-06-02 | 2019-02-13 | 니폰 제온 가부시키가이샤 | 환경 발전장치 및 전류 제어회로 |
WO2018119581A1 (en) * | 2016-12-26 | 2018-07-05 | Texas Instruments Incorporated | Methods and apparatus for negative output voltage active clamping using floating bandgap reference and temperature compensation |
TWI643528B (zh) * | 2017-10-11 | 2018-12-01 | 茂達電子股份有限公司 | 適應式的背光裝置、系統及其控制方法 |
CN108616260B (zh) * | 2018-04-02 | 2022-05-10 | 广州慧智微电子股份有限公司 | 一种功率放大器的电源电路 |
CN108306258B (zh) * | 2018-04-04 | 2023-12-29 | 奥然生物科技(上海)有限公司 | 一种用于加热器的过温检测电路和过温保护电路 |
KR102324312B1 (ko) * | 2019-12-09 | 2021-11-11 | 주식회사 현대케피코 | 인버터 게이트 드라이버의 전압 및 온도 센싱 장치 및 방법 |
CN112362180B (zh) * | 2020-10-15 | 2022-08-12 | 国网思极紫光(青岛)微电子科技有限公司 | 用于过温保护的温差检测电路 |
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EP0747798A3 (en) * | 1995-06-07 | 1998-02-11 | Acme Electric Corporation | Temperature and current dependent regulated voltage source |
JP2005100295A (ja) | 2003-09-26 | 2005-04-14 | Seiko Instruments Inc | サーマルシャットダウン回路 |
JP2006309312A (ja) * | 2005-04-26 | 2006-11-09 | Sharp Corp | レギュレータ |
JP2008197892A (ja) * | 2007-02-13 | 2008-08-28 | Sharp Corp | シリーズレギュレータ |
JP2008276611A (ja) * | 2007-05-01 | 2008-11-13 | Nec Electronics Corp | 過電流保護回路 |
CN101178608A (zh) * | 2007-12-07 | 2008-05-14 | 南京大学 | 一种具有温度保护电路的低压差线性稳压器 |
JP2009169785A (ja) * | 2008-01-18 | 2009-07-30 | Seiko Instruments Inc | ボルテージレギュレータ |
JP5099505B2 (ja) * | 2008-02-15 | 2012-12-19 | セイコーインスツル株式会社 | ボルテージレギュレータ |
JP5309641B2 (ja) * | 2008-03-24 | 2013-10-09 | ミツミ電機株式会社 | 充電制御用半導体集積回路 |
US8148907B2 (en) * | 2009-04-11 | 2012-04-03 | Sadwick Laurence P | Dimmable power supply |
JP2011061966A (ja) | 2009-09-09 | 2011-03-24 | Seiko Instruments Inc | ボルテージレギュレータ |
JP6211887B2 (ja) * | 2013-10-15 | 2017-10-11 | エスアイアイ・セミコンダクタ株式会社 | ボルテージレギュレータ |
CN104679089B (zh) * | 2013-11-26 | 2016-03-09 | 上海贝岭股份有限公司 | 用于集成led驱动芯片的梯级过温补偿保护系统及电路 |
JP6371543B2 (ja) * | 2014-03-14 | 2018-08-08 | エイブリック株式会社 | 過熱保護回路及びボルテージレギュレータ |
CN104821552B (zh) * | 2014-10-20 | 2018-04-27 | 矽力杰半导体技术(杭州)有限公司 | 过温保护方法、电路以及带该电路的线性驱动电路 |
JP6417945B2 (ja) * | 2015-01-07 | 2018-11-07 | ミツミ電機株式会社 | 電源回路 |
JP6416638B2 (ja) * | 2015-01-21 | 2018-10-31 | エイブリック株式会社 | ボルテージレギュレータ |
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2016
- 2016-11-28 TW TW105139008A patent/TWI695245B/zh active
- 2016-12-02 US US15/367,802 patent/US9829900B2/en active Active
- 2016-12-05 KR KR1020160164414A patent/KR102473993B1/ko active IP Right Grant
- 2016-12-07 CN CN201611115559.4A patent/CN106843357B/zh active Active
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Publication number | Publication date |
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JP2017107296A (ja) | 2017-06-15 |
US9829900B2 (en) | 2017-11-28 |
TWI695245B (zh) | 2020-06-01 |
TW201721325A (zh) | 2017-06-16 |
US20170160764A1 (en) | 2017-06-08 |
KR20170067147A (ko) | 2017-06-15 |
CN106843357B (zh) | 2020-03-17 |
CN106843357A (zh) | 2017-06-13 |
KR102473993B1 (ko) | 2022-12-05 |
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