JP2021175007A - 発振回路 - Google Patents
発振回路 Download PDFInfo
- Publication number
- JP2021175007A JP2021175007A JP2020074621A JP2020074621A JP2021175007A JP 2021175007 A JP2021175007 A JP 2021175007A JP 2020074621 A JP2020074621 A JP 2020074621A JP 2020074621 A JP2020074621 A JP 2020074621A JP 2021175007 A JP2021175007 A JP 2021175007A
- Authority
- JP
- Japan
- Prior art keywords
- current
- circuit
- transistor
- current path
- oscillator
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 claims description 33
- 239000003990 capacitor Substances 0.000 claims description 22
- 230000004044 response Effects 0.000 claims description 10
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/02—Details
- H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, 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
- G05F1/561—Voltage to current converters
-
- 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
-
- 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
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
-
- 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
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
- G05F3/262—Current mirrors using field-effect transistors only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/011—Modifications of generator to compensate for variations in physical values, e.g. voltage, temperature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
- H03K3/0231—Astable circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
- H03K3/0232—Monostable circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
- H03K5/135—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals by the use of time reference signals, e.g. clock signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Nonlinear Science (AREA)
- Control Of Electrical Variables (AREA)
- Pulse Circuits (AREA)
- Logic Circuits (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
Description
20:発振器
22、24:遅延回路
100:発振回路
110:電流制限回路
Claims (14)
- 定電流を生成する定電流回路と、
前記定電流回路により生成された定電流に応じた周波数のクロック信号を生成する発振器と、
前記定電流回路の電源電圧が動作保証範囲の下限よりも低下したときに生成された定電流の上限を規定する電流制限回路とを含む、発振回路。 - 前記定電流回路は、基準電流に応答して第1の電流経路に電流を生成する第1のカレントミラー回路を含み、
前記電流制限回路は、前記第1の電流経路を流れる電流に応答して第2の電流経路に電流を生成する第2のカレントミラー回路と、第2のカレントミラー回路に接続された抵抗とを含む、請求項1に記載の発振回路。 - 前記定電流回路はさらに、前記第1の電流経路を流れる電流に応答して第3の電流経路に電流を生成する第3のカレントミラー回路と、
前記第3の電流経路を流れる電流に応答して第4の電流経路に電流を生成する第4のカレントミラー回路を含み、
前記発振器は、第4の電流経路により生成された電流に基づきクロック信号を生成する、請求項2に記載の発振回路。 - 前記第2のカレントミラー回路は、前記第1の電流経路に接続された第1のトランジスタと、第2の電流経路に直列に接続された第2のトランジスタを含み、
第2のトランジスタと前記抵抗とを接続する第1のノードが第1および第2のトランジスタのゲートに共通に接続され、前記定電流の上限は、前記第2の電流経路を流れる電流により規定される、請求項2または3に記載の発振回路。 - 前記抵抗は、電源電圧が前記定電流回路の動作保証範囲の下限を満たす場合には第1のトランジスタが前記第1の電流経路を流れる電流を抑制せず、かつ電源電圧が前記定電流回路の動作保証範囲の下限より低い場合には第1のトランジスタが前記第1の電流経路を流れる電流を抑制する、請求項4に記載の発振回路。
- 前記定電流回路の電源電圧が動作保証範囲の下限を満たすとき、前記第2の電流経路を流れる電流が前記基準電流よりも大きくなるように前記抵抗の抵抗値が調整される、請求項4に記載の発振回路。
- 前記発振器は、前記第1のカレントミラー回路および前記電流制限回路を包含する、請求項2に記載の発振回路。
- 前記発振器は、キャパシタへの充電により遅延時間を規定する遅延回路を含み、
前記キャパシタは、前記第1の電流経路または前記第4の電流経路の電流により充電される、請求項2ないし7いずれか1つに記載の発振回路。 - 前記発振器は、前記遅延回路を複数含み、複数の遅延回路の各々が前記第1のカレントミラー回路および前記電流制限回路を含む、請求項8に記載の発振回路。
- 前記第1の電流経路は、直列に接続された第1のトランジスタと第3のトランジスタとを含み、
第1のトランジスタと第3のトランジスタとを接続する第2のノードが前記発振器に接続され、前記キャパシタが第1のトランジスタと直列に接続される、請求項8または9に記載の発振回路。 - 前記遅延回路はさらに、基準電圧と前記キャパシタの充電電圧とを比較するコンパレータを含み、前記充電電圧は、前記第1の電流経路または前記第4の電流経路に接続される、請求項8に記載の発振回路。
- 前記発振器は、フリップフロップ回路を介して相互に接続された一対の遅延回路を含み、一方の遅延回路の出力が前記フリップフロップ回路のセット入力に接続され、前記フリップフロップ回路の正転データ出力が前記一方の遅延回路に入力され、他方の遅延回路の出力が前記フリップフロップ回路のリセット入力に接続され、前記フリップフロップ回路の反転データ出力が前記他方の遅延回路に入力され、前記一対の遅延回路のいずれか一方の出力から前記クロック信号が生成される、請求項1ないし11いずれか1つに記載の発振回路。
- 第1および第2のトランジスタはP型MOSトランジスタであり、第3のトランジスタはN型MOSトランジスタである、請求項1ないし12いずれか1つに記載の発振回路。
- 請求項1ないし13いずれか1つに記載の発振回路と、
前記発振回路で生成されたクロック信号に同期して動作する回路と、
を含む半導体集積回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020074621A JP6886544B1 (ja) | 2020-04-20 | 2020-04-20 | 発振回路 |
TW110110537A TWI773214B (zh) | 2020-04-20 | 2021-03-24 | 振盪電路以及半導體積體電路 |
CN202110386825.1A CN113541606B (zh) | 2020-04-20 | 2021-04-12 | 振荡电路以及半导体集成电路 |
KR1020210050719A KR102506190B1 (ko) | 2020-04-20 | 2021-04-19 | 발진회로 및 반도체 집적회로 |
US17/235,270 US11323067B2 (en) | 2020-04-20 | 2021-04-20 | Oscillator circuit and semiconductor integrated circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020074621A JP6886544B1 (ja) | 2020-04-20 | 2020-04-20 | 発振回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP6886544B1 JP6886544B1 (ja) | 2021-06-16 |
JP2021175007A true JP2021175007A (ja) | 2021-11-01 |
Family
ID=76310188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020074621A Active JP6886544B1 (ja) | 2020-04-20 | 2020-04-20 | 発振回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11323067B2 (ja) |
JP (1) | JP6886544B1 (ja) |
KR (1) | KR102506190B1 (ja) |
CN (1) | CN113541606B (ja) |
TW (1) | TWI773214B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11966241B2 (en) * | 2021-07-09 | 2024-04-23 | Taiwan Semiconductor Manufacturing Company, Ltd. | Low dropout regulator circuits, input/output device, and methods for operating a low dropout regulator |
WO2023239850A1 (en) * | 2022-06-08 | 2023-12-14 | Texas Instruments Incorporated | Inductance detection for power converters |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003101389A (ja) * | 2001-09-21 | 2003-04-04 | Mitsumi Electric Co Ltd | 発振回路 |
JP2007074190A (ja) * | 2005-09-06 | 2007-03-22 | Rohm Co Ltd | 三角波発生回路ならびにそれを用いたパルス幅変調器およびスイッチングレギュレータ |
JP2013038744A (ja) * | 2011-08-11 | 2013-02-21 | Renesas Electronics Corp | 発振回路及びそれを備えた半導体集積回路 |
JP2014075744A (ja) * | 2012-10-05 | 2014-04-24 | Renesas Electronics Corp | 発振回路 |
JP2017069825A (ja) * | 2015-09-30 | 2017-04-06 | エスアイアイ・セミコンダクタ株式会社 | 発振回路 |
JP2018517955A (ja) * | 2015-04-20 | 2018-07-05 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | 高速のスタートアップのスタンドバイモードを有するクロック生成回路 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7038552B2 (en) | 2003-10-07 | 2006-05-02 | Analog Devices, Inc. | Voltage controlled oscillator having improved phase noise |
JP2005234890A (ja) | 2004-02-19 | 2005-09-02 | Sanyo Electric Co Ltd | 定電流回路 |
WO2005101624A1 (en) * | 2004-04-13 | 2005-10-27 | System General Corp. | Pwm controller having a modulator for saving power and reducing acoustic noise |
US7109804B2 (en) * | 2004-04-27 | 2006-09-19 | Maxim Integrated Products, Inc. | Precision relaxation oscillator without comparator delay errors |
JP5352500B2 (ja) * | 2010-03-02 | 2013-11-27 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
CN102255497B (zh) * | 2010-05-17 | 2013-10-16 | 华邦电子股份有限公司 | 电荷泵电路的控制电路 |
JP5573781B2 (ja) * | 2011-06-13 | 2014-08-20 | 株式会社デンソー | Cr発振回路およびその周波数補正方法 |
US8890630B2 (en) * | 2011-07-18 | 2014-11-18 | Crane Electronics, Inc. | Oscillator apparatus and method with wide adjustable frequency range |
JP2013097751A (ja) | 2011-11-07 | 2013-05-20 | Yamaha Corp | 定電流回路 |
CN103368243A (zh) * | 2012-03-29 | 2013-10-23 | 海洋王照明科技股份有限公司 | 一种限流充电电路 |
CN103248319B (zh) * | 2012-04-25 | 2016-04-06 | 殷明 | 一种低功耗振荡电路 |
US10020931B2 (en) * | 2013-03-07 | 2018-07-10 | Intel Corporation | Apparatus for dynamically adapting a clock generator with respect to changes in power supply |
JP6185741B2 (ja) * | 2013-04-18 | 2017-08-23 | ルネサスエレクトロニクス株式会社 | 周波数同期ループ回路及び半導体集積回路 |
CN105337496B (zh) * | 2014-05-29 | 2019-06-25 | 展讯通信(上海)有限公司 | 基于压控振荡器的脉冲频率调制电路 |
US9903892B2 (en) | 2014-09-08 | 2018-02-27 | Qualcomm Incorporated | Low power small area oscillator-based ADC |
JP6416650B2 (ja) * | 2015-02-06 | 2018-10-31 | エイブリック株式会社 | 定電圧回路及び発振装置 |
CN108207053B (zh) * | 2016-12-16 | 2019-11-26 | 施耐德电气工业公司 | 驱动电路 |
JP7101499B2 (ja) * | 2018-03-12 | 2022-07-15 | エイブリック株式会社 | 発振回路 |
KR102509824B1 (ko) * | 2018-06-15 | 2023-03-14 | 삼성전자주식회사 | 발진기 |
KR102527386B1 (ko) * | 2018-07-13 | 2023-04-28 | 삼성전자주식회사 | 전류 미러를 포함하는 디지털 제어 오실레이터 |
-
2020
- 2020-04-20 JP JP2020074621A patent/JP6886544B1/ja active Active
-
2021
- 2021-03-24 TW TW110110537A patent/TWI773214B/zh active
- 2021-04-12 CN CN202110386825.1A patent/CN113541606B/zh active Active
- 2021-04-19 KR KR1020210050719A patent/KR102506190B1/ko active IP Right Grant
- 2021-04-20 US US17/235,270 patent/US11323067B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003101389A (ja) * | 2001-09-21 | 2003-04-04 | Mitsumi Electric Co Ltd | 発振回路 |
JP2007074190A (ja) * | 2005-09-06 | 2007-03-22 | Rohm Co Ltd | 三角波発生回路ならびにそれを用いたパルス幅変調器およびスイッチングレギュレータ |
JP2013038744A (ja) * | 2011-08-11 | 2013-02-21 | Renesas Electronics Corp | 発振回路及びそれを備えた半導体集積回路 |
JP2014075744A (ja) * | 2012-10-05 | 2014-04-24 | Renesas Electronics Corp | 発振回路 |
JP2018517955A (ja) * | 2015-04-20 | 2018-07-05 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | 高速のスタートアップのスタンドバイモードを有するクロック生成回路 |
JP2017069825A (ja) * | 2015-09-30 | 2017-04-06 | エスアイアイ・セミコンダクタ株式会社 | 発振回路 |
Also Published As
Publication number | Publication date |
---|---|
TW202141218A (zh) | 2021-11-01 |
KR20210130106A (ko) | 2021-10-29 |
JP6886544B1 (ja) | 2021-06-16 |
TWI773214B (zh) | 2022-08-01 |
US11323067B2 (en) | 2022-05-03 |
CN113541606A (zh) | 2021-10-22 |
KR102506190B1 (ko) | 2023-03-03 |
US20210328548A1 (en) | 2021-10-21 |
CN113541606B (zh) | 2024-07-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4648346B2 (ja) | 調整可能なトランジスタボディバイアス回路網 | |
US8995154B2 (en) | Power supply circuit system | |
JP3732884B2 (ja) | 内部電源電圧発生回路、内部電圧発生回路および半導体装置 | |
US5861771A (en) | Regulator circuit and semiconductor integrated circuit device having the same | |
JP2020510397A (ja) | 低ドロップアウトレギュレータ | |
US6700363B2 (en) | Reference voltage generator | |
JP6886544B1 (ja) | 発振回路 | |
JP4199742B2 (ja) | 遅延回路、及びこれらを備えた半導体装置 | |
KR100818105B1 (ko) | 내부 전압 발생 회로 | |
JP2000228084A (ja) | 電圧発生回路 | |
JP2021185516A (ja) | 定電流回路 | |
JPH03296118A (ja) | 基準電圧発生回路 | |
JP4614234B2 (ja) | 電源装置およびそれを備える電子機器 | |
JP4459043B2 (ja) | 半導体素子のオシレータ回路 | |
JP2017079431A (ja) | 電圧比較回路 | |
JP2012253432A (ja) | 半導体装置 | |
US20200274532A1 (en) | Power-on clear circuit and semiconductor device | |
US6297688B1 (en) | Current generating circuit | |
JP2765631B2 (ja) | 入力バッファの安定化回路 | |
JP2008197723A (ja) | 電圧発生回路 | |
JP2020141220A (ja) | パワーオンクリア回路及び半導体装置 | |
JP6530226B2 (ja) | 電圧レギュレータ、半導体装置、及び電圧レギュレータの電圧生成方法 | |
JP2002258956A (ja) | 電圧制御回路 | |
JP2006155357A (ja) | 降圧回路 | |
KR20180026835A (ko) | 입력 회로 및 이를 포함하는 반도체 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200420 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200611 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20200611 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210120 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210312 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20210421 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210514 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6886544 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |