TW200723676A - Feedback controller for PWM amplifier - Google Patents

Feedback controller for PWM amplifier

Info

Publication number
TW200723676A
TW200723676A TW095129509A TW95129509A TW200723676A TW 200723676 A TW200723676 A TW 200723676A TW 095129509 A TW095129509 A TW 095129509A TW 95129509 A TW95129509 A TW 95129509A TW 200723676 A TW200723676 A TW 200723676A
Authority
TW
Taiwan
Prior art keywords
pwm
signal
pulse
input signal
vin
Prior art date
Application number
TW095129509A
Other languages
English (en)
Inventor
Anthony James Magrath
John Westlake
Original Assignee
Wolfson Microelectronics Plc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wolfson Microelectronics Plc filed Critical Wolfson Microelectronics Plc
Publication of TW200723676A publication Critical patent/TW200723676A/zh

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3217—Modifications of amplifiers to reduce non-linear distortion in single ended push-pull amplifiers
    • 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
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/78—A comparator being used in a controlling circuit of an amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
TW095129509A 2005-08-17 2006-08-11 Feedback controller for PWM amplifier TW200723676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0516823A GB2429351B (en) 2005-08-17 2005-08-17 Feedback controller for PWM amplifier

Publications (1)

Publication Number Publication Date
TW200723676A true TW200723676A (en) 2007-06-16

Family

ID=35098419

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095129509A TW200723676A (en) 2005-08-17 2006-08-11 Feedback controller for PWM amplifier

Country Status (6)

Country Link
US (1) US7348840B2 (zh)
EP (1) EP1946443A2 (zh)
CN (1) CN101288227A (zh)
GB (1) GB2429351B (zh)
TW (1) TW200723676A (zh)
WO (1) WO2007020404A1 (zh)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8615205B2 (en) 2007-12-18 2013-12-24 Qualcomm Incorporated I-Q mismatch calibration and method
US8712357B2 (en) 2008-11-13 2014-04-29 Qualcomm Incorporated LO generation with deskewed input oscillator signal
US8717077B2 (en) 2008-11-25 2014-05-06 Qualcomm Incorporated Duty cycle adjustment for a local oscillator signal
US8791740B2 (en) 2009-07-16 2014-07-29 Qualcomm Incorporated Systems and methods for reducing average current consumption in a local oscillator path
TWI453435B (zh) * 2009-04-16 2014-09-21 Litepoint Corp 用以測試具有和多個功率控制參數相依之輸出信號功率的資料信號放大器之方法及系統
US8847638B2 (en) 2009-07-02 2014-09-30 Qualcomm Incorporated High speed divide-by-two circuit
US8854098B2 (en) 2011-01-21 2014-10-07 Qualcomm Incorporated System for I-Q phase mismatch detection and correction
US8970272B2 (en) 2008-05-15 2015-03-03 Qualcomm Incorporated High-speed low-power latches
TWI588495B (zh) * 2013-03-06 2017-06-21 荏原製作所股份有限公司 表面電位測定裝置及表面電位測定方法
TWI588506B (zh) * 2016-08-12 2017-06-21 致茂電子股份有限公司 控制器的輸出控制方法
TWI760158B (zh) * 2021-03-25 2022-04-01 達發科技股份有限公司 橋式負載d類功率放大器、音訊放大電路與其相關之控制方法

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2419757B (en) * 2004-11-01 2008-11-26 Zetex Plc A digital amplifier
GB2421648B (en) 2004-12-23 2009-01-07 Zetex Plc Amplifier fault detection circuit
US8654868B2 (en) * 2006-04-18 2014-02-18 Qualcomm Incorporated Offloaded processing for wireless applications
US7576605B2 (en) * 2006-04-20 2009-08-18 Qualcomm Incorporated Low power output stage
US8406794B2 (en) * 2006-04-26 2013-03-26 Qualcomm Incorporated Methods and apparatuses of initiating communication in wireless networks
US8289159B2 (en) 2006-04-26 2012-10-16 Qualcomm Incorporated Wireless localization apparatus and method
JP2009535928A (ja) * 2006-04-26 2009-10-01 クゥアルコム・インコーポレイテッド デバイス関数性の動的配分およびリソース管理
US8294441B2 (en) * 2006-11-13 2012-10-23 Decicon, Inc. Fast low dropout voltage regulator circuit
US8304931B2 (en) * 2006-12-18 2012-11-06 Decicon, Inc. Configurable power supply integrated circuit
US7952337B2 (en) * 2006-12-18 2011-05-31 Decicon, Inc. Hybrid DC-DC switching regulator circuit
US20080157740A1 (en) * 2006-12-18 2008-07-03 Decicon, Inc. Hybrid low dropout voltage regulator circuit
JP4526596B2 (ja) * 2007-03-28 2010-08-18 富士通セミコンダクター株式会社 信号遅延評価プログラム、信号遅延評価方法、および信号遅延評価装置
US7948224B2 (en) * 2007-03-30 2011-05-24 Hong Kong Applied Science And Technology Research Institute Co. Ltd. Feedback controller having multiple feedback paths
US7777562B2 (en) * 2007-12-20 2010-08-17 Asahi Kasei Emd Corporation Distortion suppression circuit for digital class-D audio amplifier
US20090261902A1 (en) * 2008-04-17 2009-10-22 Freescale Semiconductor, Inc. Asynchronous Error Correction Circuit for Switching Amplifier
KR20100008749A (ko) * 2008-07-16 2010-01-26 삼성전자주식회사 스위칭 파워 증폭 장치 및 그 제어 방법
DK2149890T3 (en) * 2008-07-31 2015-02-23 Abb Technology Ag Enkeltspoleaktuator for low and medium voltage applications
US7863956B2 (en) 2008-10-06 2011-01-04 Telefonaktiebolaget L M Ericsson (Publ) Pulse-elimination pulse-width modulation
US8749213B2 (en) * 2009-06-09 2014-06-10 Silergy Technology Mixed mode control for switching regulator with fast transient responses
US7852156B1 (en) * 2009-08-21 2010-12-14 Amazing Microelectronic Corp. Class-D power amplifier having distortion-suppressing function
EP2387149B1 (en) 2010-04-29 2012-11-07 Dialog Semiconductor GmbH Over-current protection for a switch mode class D audio amplifier
JP5618776B2 (ja) * 2010-11-22 2014-11-05 ローム株式会社 半導体装置及びこれを用いた電子機器
EP2562933A1 (en) * 2011-08-25 2013-02-27 Nxp B.V. Class D amplifier and control method
CN102984630B (zh) * 2011-09-06 2015-12-02 昂宝电子（上海）有限公司 用于音频放大系统中减少失真的系统和方法
CN102984629B (zh) 2011-09-06 2014-12-17 昂宝电子（上海）有限公司 用于音频放大系统中降噪的方法
US8228118B1 (en) * 2011-09-17 2012-07-24 Wen-Hsiung Hsieh Switching amplifier using capacitor for transmitting energy
US8981844B2 (en) * 2013-01-10 2015-03-17 Analog Devices Global Narrow voltage range multi-level output pulse modulated amplifier with one-bit hysteresis quantizer
CN103441739B (zh) 2013-08-21 2015-04-22 昂宝电子（上海）有限公司 具有一个或多个通道的放大系统和方法
US9685919B2 (en) 2013-08-21 2017-06-20 On-Bright Electronics (Shanghai) Co., Ltd. Amplification systems and methods with output regulation
JP6510199B2 (ja) * 2014-08-19 2019-05-08 ローム株式会社 スイッチング回路、オーディオアンプ集積回路、電子機器、電気音響変換素子の駆動方法
US10548665B2 (en) 2016-02-29 2020-02-04 Pulse Biosciences, Inc. High-voltage analog circuit pulser with feedback control
US9966959B2 (en) * 2016-07-19 2018-05-08 Altera Corporation Feedback control systems with pulse density signal processing capabilities
US9838000B1 (en) 2016-12-22 2017-12-05 Silanna Asia Pte Ltd Minimum pulse-width assurance
US10033366B2 (en) 2016-12-22 2018-07-24 Silanna Asia Pte Ltd Minimum pulse-width assurance
EP3422570B1 (en) * 2017-06-30 2020-11-25 Nxp B.V. An amplifier circuit
US10673368B2 (en) * 2018-03-23 2020-06-02 The Boeing Company System and method for pulse-width modulation using an adjustable comparison criterion
US11381224B2 (en) 2018-06-08 2022-07-05 Southern Research Institute Clockless programmable pulse width generation using an inverse chaotic map
US11265178B1 (en) * 2018-06-08 2022-03-01 Southern Research Institute Physically unclonable functions using pulse width chaotic maps
WO2019237115A1 (en) 2018-06-08 2019-12-12 Cohen Seth D Clockless time-to-digital converter
CN110945744B (zh) * 2019-05-07 2023-12-15 香港应用科技研究院有限公司 用于无线功率接收器的数字分流调节
CN111245403B (zh) * 2020-01-09 2023-07-07 武汉美和易思数字科技有限公司 一种脉冲高压发生器
US11733364B2 (en) 2020-05-21 2023-08-22 Kratos Sre, Inc. Target ranging with subsampled noise correlation

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6017167B2 (ja) * 1978-05-23 1985-05-01 ソニー株式会社 パルス巾変調信号増幅回路
US4523152A (en) * 1982-04-01 1985-06-11 Unisearch Limited High-efficiency feedforward-error-correction amplifier
US5077540A (en) * 1990-06-14 1991-12-31 University Of Virginia Patents Foundation Minimum pulse width switching power amplifier
US5389829A (en) * 1991-09-27 1995-02-14 Exar Corporation Output limiter for class-D BICMOS hearing aid output amplifier
GB2306239B (en) * 1995-10-13 1999-11-17 Northern Telecom Ltd An integrator
US5973368A (en) * 1996-06-05 1999-10-26 Pearce; Lawrence G. Monolithic class D amplifier
JP3346581B2 (ja) * 1997-04-02 2002-11-18 バング アンド オルフセン・パワーハウス・エイ／エス パルス変調信号の強化されたパワー増幅用パルス基準制御方法及びシステム
DE69818631T2 (de) * 1997-08-12 2004-08-12 Koninklijke Philips Electronics N.V. Verstärkungsanordnung für digitale signale
DE19741794A1 (de) 1997-09-22 1999-03-25 Becker Gmbh Vorrichtung zur Fehlerkorrektur eines PWM-Signals
US5917369A (en) * 1998-02-25 1999-06-29 National Semiconductor Corporation Pulse width modulator with automatic gain control over-voltage modulator and limiter
US6294954B1 (en) 1999-09-23 2001-09-25 Audiologic, Incorporated Adaptive dead time control for switching circuits
US6339360B1 (en) * 2000-05-09 2002-01-15 Peavey Electronics Corporation Digital amplifier with pulse insertion circuit
US6476674B2 (en) * 2001-01-24 2002-11-05 Momentum Data Systems Method and apparatus for error correction of amplifier
US6621335B2 (en) 2001-04-18 2003-09-16 Microsemi Corporation Class D amplifier with passive RC network
JP2006507743A (ja) 2002-11-22 2006-03-02 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ パルス幅変調型ノイズシェーパ
US7002406B2 (en) * 2003-05-16 2006-02-21 Texas Instruments Incorporated Loop filter for class D amplifiers
US20040232978A1 (en) * 2003-05-23 2004-11-25 Easson Craig Alexander Filterless class D amplifiers using spread spectrum PWM modulation
US6922100B2 (en) * 2003-07-29 2005-07-26 Freescale Semiconductor, Inc. Method and apparatus for switching amplification having variable sample point and variable order correction
GB2406008B (en) * 2003-09-15 2008-04-02 Wolfson Ltd Class D amplifier

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8615205B2 (en) 2007-12-18 2013-12-24 Qualcomm Incorporated I-Q mismatch calibration and method
US8970272B2 (en) 2008-05-15 2015-03-03 Qualcomm Incorporated High-speed low-power latches
US8712357B2 (en) 2008-11-13 2014-04-29 Qualcomm Incorporated LO generation with deskewed input oscillator signal
US8717077B2 (en) 2008-11-25 2014-05-06 Qualcomm Incorporated Duty cycle adjustment for a local oscillator signal
US8718574B2 (en) 2008-11-25 2014-05-06 Qualcomm Incorporated Duty cycle adjustment for a local oscillator signal
TWI453435B (zh) * 2009-04-16 2014-09-21 Litepoint Corp 用以測試具有和多個功率控制參數相依之輸出信號功率的資料信號放大器之方法及系統
US8847638B2 (en) 2009-07-02 2014-09-30 Qualcomm Incorporated High speed divide-by-two circuit
US8791740B2 (en) 2009-07-16 2014-07-29 Qualcomm Incorporated Systems and methods for reducing average current consumption in a local oscillator path
US8854098B2 (en) 2011-01-21 2014-10-07 Qualcomm Incorporated System for I-Q phase mismatch detection and correction
TWI588495B (zh) * 2013-03-06 2017-06-21 荏原製作所股份有限公司 表面電位測定裝置及表面電位測定方法
TWI588506B (zh) * 2016-08-12 2017-06-21 致茂電子股份有限公司 控制器的輸出控制方法
TWI760158B (zh) * 2021-03-25 2022-04-01 達發科技股份有限公司 橋式負載d類功率放大器、音訊放大電路與其相關之控制方法

Also Published As

Publication number Publication date
GB2429351A (en) 2007-02-21
WO2007020404A9 (en) 2007-06-14
WO2007020404A1 (en) 2007-02-22
EP1946443A2 (en) 2008-07-23
US20070040608A1 (en) 2007-02-22
GB0516823D0 (en) 2005-09-21
GB2429351B (en) 2009-07-08
CN101288227A (zh) 2008-10-15
US7348840B2 (en) 2008-03-25

Similar Documents

Publication Publication Date Title
TW200723676A (en) Feedback controller for PWM amplifier
TW200713768A (en) Auto-adaptive voltage positioning high-speed PWM controlling device and driving signal generation method thereof
JP6001658B2 (ja) コンバータのための一次電圧感知及び制御
Escobar et al. An adaptive passivity-based controller for a unity power factor rectifier
CN104010415B (zh) 负载电流调整方法及电路及带该电路的开关电源
CN101159415A (zh) 响应前馈信号的电源控制器的方法和装置
TW200717984A (en) DC-DC converter and method for controlling DC-DC converter
RU2009145107A (ru) Устройство и способы освещения на основе сид с высоким коэффициентом мощности
TW200638661A (en) Circuit and method for controlling step-up/step-down DC-DC converter
WO2002001309A3 (en) Power factor correction control circuit for switching power supply
JP2007300799A5 (zh)
US20120043946A1 (en) System and method for regulating a power supply
DE602004013917D1 (de) Gleichstromspannungsregler mit niedrigem Spannungsabfall
CN106357142A (zh) 用于提供焊接类功率的方法和设备
CN102906548A (zh) 用于切换模式电源的软启动控制技术
JP4979796B2 (ja) 負荷駆動装置
JP2016514940A (ja) 電圧レギュレータ
TW200638682A (en) Pulse width modulation (PWM) controlling module and method for adjusting a PWM signal thereof
WO2006115912A3 (en) Combined feedback and command shaping controller for multistate control with application to improving positioning and reducing cable sway in cranes
US20160309563A1 (en) Independently adjustable current and voltage ac-ac converter
CN103337959B (zh) 低噪连续可调直流电源及其调制方法
CN105320196A (zh) 电流控制装置
US20090327783A1 (en) Modified pulse width modulator and hybrid power supply
CN103411010A (zh) 一种燃气比例阀pwm驱动电路
CN109863702B (zh) 电流调制电路、驱动电路以及利用电流调制驱动照明负载的方法