JP7084479B2 - 定電圧発生回路 - Google Patents
定電圧発生回路 Download PDFInfo
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- JP7084479B2 JP7084479B2 JP2020526789A JP2020526789A JP7084479B2 JP 7084479 B2 JP7084479 B2 JP 7084479B2 JP 2020526789 A JP2020526789 A JP 2020526789A JP 2020526789 A JP2020526789 A JP 2020526789A JP 7084479 B2 JP7084479 B2 JP 7084479B2
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- feedback
- circuit
- generation circuit
- constant voltage
- voltage generation
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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
- G05F1/461—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using an operational amplifier as 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
- G05F1/462—Regulating voltage or current wherein the variable actually regulated by the final control device is DC as a function of the requirements of the load, e.g. delay, temperature, specific voltage/current characteristic
- G05F1/467—Sources with noise compensation
-
- 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
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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)
- Amplifiers (AREA)
Description
第1の抵抗を有する帰還回路であって、定電圧発生回路の出力端子と基板電位との間の出力電圧を、前記第1の抵抗と第2の抵抗により分圧してなる帰還電圧を発生する帰還回路を備え、所定の基準電圧と前記帰還電圧との電圧差を増幅して制御電圧を出力する演算増幅器と、
前記演算増幅器からの制御電圧に基づいて出力電圧を制御する出力トランジスタとを備えた定電圧発生回路において、
前記帰還回路はさらに、前記基板電位からの高周波ノイズ成分を重畳させるように構成されたことを特徴とする。
まず、比較例の構成及び動作、特に直流オフセットの発生について以下に説明する。
図5は実施形態1に係る定電圧発生回路1Aの構成例を示す回路図である。図5において、定電圧発生回路1Aは、図1の定電圧発生回路1に比較して、帰還回路10に代えて、帰還回路10Aを備えたことが異なる。
の角周波数が定電圧発生回路1Aの動作帯域外であれば、動作帯域内の位相補償として働くことは無く、高周波のノイズ耐性を高めるための効果だけに機能するようになる。すなわち、基板ノイズ電圧Vnである高周波ノイズ成分は、帰還回路10の帰還ループ周波数以上の周波数成分を有する。このときの位相補償としては、抵抗R13を付加する前の以下の位相定数で決まることになる。
図10は実施形態2に係る定電圧発生回路1Bの構成例を示す回路図である。図10において、実施形態2に係る定電圧発生回路1Bは、図5及び図6の定電圧発生回路1Aに比較して、帰還回路10Aに代えて、帰還回路10Bを備えたことを特徴とする。帰還回路10Bは、抵抗R11とキャパシタC11との並列回路に対して直列に、抵抗R13を接続して構成される。
以上の実施形態1及び2のまとめとして、帰還電圧Vfb=基板ノイズ電圧Vnとなる条件対応表を表1に示す。
特許文献1に記載の比較例は、高周波ノイズ耐性を改善するために、高周波ノイズ成分を制限するための低域通過フィルタを備えたことを特徴としている。これに対して、本実施形態では、帰還回路を有する差動増幅回路を含む定電圧発生回路において、帰還回路のループ周波数帯域外の高周波ノイズ成分が入力された場合であっても、直流オフセットが発生することを防止できる定電圧発生回路を提供することを目的としており、低域通過フィルタを備えておらず、構成が全く異なる。
2 基準電圧発生回路
3 演算増幅器
4 負荷
5 定電圧源
6 ノイズ電圧源
10,10A,10B 帰還回路
C11 キャパシタ
M11~M18 MOSトランジスタ
R11~R13 抵抗
T1 入力端子
T2 接地端子
T3 出力端子
Z11 合成インピーダンス
Claims (4)
- 第1の抵抗を有する帰還回路であって、定電圧発生回路の出力端子と基板電位との間の出力電圧を、前記第1の抵抗と第2の抵抗により分圧してなる帰還電圧を発生する帰還回路を備え、所定の基準電圧と前記帰還電圧との電圧差を増幅して制御電圧を出力する演算増幅器と、
前記演算増幅器からの制御電圧に基づいて出力電圧を制御する出力トランジスタとを備えた定電圧発生回路において、
前記帰還回路はさらに、前記基板電位からの高周波ノイズ成分を前記帰還電圧に重畳させることで、前記演算増幅器の反転入力と非反転入力とに伝搬する各ノイズ振幅を互いに実質的に一致させることを特徴とする定電圧発生回路。 - 前記帰還回路は、前記第1の抵抗に並列に接続されかつ前記高周波ノイズ成分を通過させる並列回路を備え、
前記並列回路は、第3の抵抗とキャパシタとを直列に接続することにより構成されたことを特徴とする請求項1記載の定電圧発生回路。 - 前記帰還回路は、前記第1の抵抗に並列に接続されかつ前記高周波ノイズ成分を通過させるキャパシタを備え、
前記帰還回路は、前記出力端子と前記演算増幅器の非反転入力との間に挿入され、
前記帰還回路は、前記演算増幅器の非反転入力に接続された一端と、前記第1の抵抗に接続された他端とを有する第4の抵抗をさらに備えたことを特徴とする請求項1記載の定電圧発生回路。 - 前記高周波ノイズ成分は、前記帰還回路の帰還ループ周波数以上の周波数成分を有することを特徴とする請求項1~3のうちのいずれか1つに記載の定電圧発生回路。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/024424 WO2020003419A1 (ja) | 2018-06-27 | 2018-06-27 | 定電圧発生回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2020003419A1 JPWO2020003419A1 (ja) | 2021-06-24 |
| JP7084479B2 true JP7084479B2 (ja) | 2022-06-14 |
Family
ID=68986721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020526789A Active JP7084479B2 (ja) | 2018-06-27 | 2018-06-27 | 定電圧発生回路 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US11314270B2 (ja) |
| JP (1) | JP7084479B2 (ja) |
| CN (1) | CN112384874B (ja) |
| WO (1) | WO2020003419A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20250334986A1 (en) * | 2024-04-25 | 2025-10-30 | Nanya Technology Corporation | Voltage regulator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005316799A (ja) | 2004-04-30 | 2005-11-10 | Nec Electronics Corp | ボルテージレギュレータ回路 |
| JP2007011972A (ja) | 2005-07-04 | 2007-01-18 | Toshiba Corp | 直流電源電圧安定化回路 |
| JP2007188533A (ja) | 2007-04-16 | 2007-07-26 | Ricoh Co Ltd | ボルテージレギュレータ及びボルテージレギュレータの位相補償方法 |
| JP2013045834A (ja) | 2011-08-23 | 2013-03-04 | Toshiba Corp | 半導体装置 |
| JP2015146092A (ja) | 2014-02-03 | 2015-08-13 | セイコーエプソン株式会社 | シリーズレギュレーター回路、半導体集積回路装置、及び、電子機器 |
| JP2017068471A (ja) | 2015-09-29 | 2017-04-06 | 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 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5490055A (en) * | 1993-03-03 | 1996-02-06 | At&T Corp. | Multiloop feedback control apparatus for DC/DC converters with frequency-shaping band pass current control |
| US5587629A (en) * | 1995-08-28 | 1996-12-24 | Philips Electronics North America Corporation | Transformerless high-voltage generator circuit |
| JP3993473B2 (ja) | 2002-06-20 | 2007-10-17 | 株式会社ルネサステクノロジ | 半導体集積回路装置 |
| EP1376294A1 (en) * | 2002-06-28 | 2004-01-02 | Motorola, Inc. | Low drop-out voltage regulator and method |
| US7026824B2 (en) * | 2003-10-31 | 2006-04-11 | Faraday Technology Corp. | Voltage reference generator with negative feedback |
| CN101183270B (zh) * | 2007-11-21 | 2010-06-02 | 北京中星微电子有限公司 | 一种低压差稳压器 |
| JP5864086B2 (ja) * | 2010-07-28 | 2016-02-17 | ラピスセミコンダクタ株式会社 | 差動増幅回路 |
| JP5997620B2 (ja) * | 2013-01-28 | 2016-09-28 | 株式会社東芝 | レギュレータ |
| CN103399607B (zh) * | 2013-07-29 | 2015-09-02 | 电子科技大学 | 集成摆率增强电路的高psr低压差线性稳压器 |
| CN103997206B (zh) * | 2014-05-20 | 2017-04-12 | 华为技术有限公司 | 一种开关电源 |
| JP7031369B2 (ja) * | 2018-02-28 | 2022-03-08 | セイコーエプソン株式会社 | 出力回路、発振器及び電子機器 |
| KR102558000B1 (ko) * | 2018-03-27 | 2023-07-20 | 삼성전자주식회사 | 밀러 보상 회로를 포함하는 증폭 회로 |
| US20200125126A1 (en) * | 2018-10-19 | 2020-04-23 | Stmicroelectronics International N.V. | Voltage regulator circuit with high power supply rejection ratio |
| DE112019005412T5 (de) * | 2018-10-31 | 2021-07-15 | Rohm Co., Ltd. | Lineare Stromversorgungsschaltung |
-
2018
- 2018-06-27 WO PCT/JP2018/024424 patent/WO2020003419A1/ja not_active Ceased
- 2018-06-27 US US17/253,725 patent/US11314270B2/en active Active
- 2018-06-27 JP JP2020526789A patent/JP7084479B2/ja active Active
- 2018-06-27 CN CN201880095050.9A patent/CN112384874B/zh active Active
-
2022
- 2022-03-25 US US17/704,113 patent/US11592855B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005316799A (ja) | 2004-04-30 | 2005-11-10 | Nec Electronics Corp | ボルテージレギュレータ回路 |
| JP2007011972A (ja) | 2005-07-04 | 2007-01-18 | Toshiba Corp | 直流電源電圧安定化回路 |
| JP2007188533A (ja) | 2007-04-16 | 2007-07-26 | Ricoh Co Ltd | ボルテージレギュレータ及びボルテージレギュレータの位相補償方法 |
| JP2013045834A (ja) | 2011-08-23 | 2013-03-04 | Toshiba Corp | 半導体装置 |
| JP2015146092A (ja) | 2014-02-03 | 2015-08-13 | セイコーエプソン株式会社 | シリーズレギュレーター回路、半導体集積回路装置、及び、電子機器 |
| JP2017068471A (ja) | 2015-09-29 | 2017-04-06 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112384874B (zh) | 2022-08-23 |
| US20210191442A1 (en) | 2021-06-24 |
| US20220214707A1 (en) | 2022-07-07 |
| US11592855B2 (en) | 2023-02-28 |
| US11314270B2 (en) | 2022-04-26 |
| WO2020003419A1 (ja) | 2020-01-02 |
| JPWO2020003419A1 (ja) | 2021-06-24 |
| CN112384874A (zh) | 2021-02-19 |
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