KR100939447B1 - 차동 출력 스위칭 증폭기에서 스펙트럼 널을 생성하기위한 회로 및 그 방법 - Google Patents

차동 출력 스위칭 증폭기에서 스펙트럼 널을 생성하기위한 회로 및 그 방법 Download PDF

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Publication number
KR100939447B1
KR100939447B1 KR1020047002929A KR20047002929A KR100939447B1 KR 100939447 B1 KR100939447 B1 KR 100939447B1 KR 1020047002929 A KR1020047002929 A KR 1020047002929A KR 20047002929 A KR20047002929 A KR 20047002929A KR 100939447 B1 KR100939447 B1 KR 100939447B1
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South Korea
Prior art keywords
switching
signal
switching signal
input
generating
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Korean (ko)
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KR20040039310A (ko
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마이댜팔랩
록크너윌리암
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프리스케일 세미컨덕터, 인크.
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    • 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
    • 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
    • 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
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/342—Pulse code modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/345—Pulse density modulation being used in an amplifying circuit
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
KR1020047002929A 2001-08-30 2002-08-13 차동 출력 스위칭 증폭기에서 스펙트럼 널을 생성하기위한 회로 및 그 방법 Expired - Fee Related KR100939447B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/943,177 2001-08-30
US09/943,177 US6605991B2 (en) 2001-08-30 2001-08-30 Circuitry for creating a spectral null in a differential output switching amplifier and method therefor
PCT/US2002/025905 WO2003021770A1 (en) 2001-08-30 2002-08-13 Circuitry for creating a spectral null in a differential output switching amplifier and method therefor

Publications (2)

Publication Number Publication Date
KR20040039310A KR20040039310A (ko) 2004-05-10
KR100939447B1 true KR100939447B1 (ko) 2010-01-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020047002929A Expired - Fee Related KR100939447B1 (ko) 2001-08-30 2002-08-13 차동 출력 스위칭 증폭기에서 스펙트럼 널을 생성하기위한 회로 및 그 방법

Country Status (6)

Country Link
US (1) US6605991B2 (enExample)
EP (1) EP1423912A1 (enExample)
JP (1) JP4210594B2 (enExample)
KR (1) KR100939447B1 (enExample)
TW (1) TWI240484B (enExample)
WO (1) WO2003021770A1 (enExample)

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EP1361656B1 (en) * 2002-05-10 2008-02-13 Texas Instruments Incorporated Method and device to prevent power-on audio output noise in a wireless telephone handset
EP1376857B1 (en) * 2002-06-14 2005-03-30 Nokia Corporation Electronic circuit for a switching power amplifier and method for switching the output stage of a switching power amplifier
WO2004017513A1 (en) * 2002-08-14 2004-02-26 Dspfactory Sa Amplifier
JP4136580B2 (ja) * 2002-10-02 2008-08-20 アルプス電気株式会社 送信器用増幅回路
US7729790B1 (en) * 2003-03-21 2010-06-01 D2Audio Corporation Phase alignment of audio output data in a multi-channel configuration
US7929718B1 (en) 2003-05-12 2011-04-19 D2Audio Corporation Systems and methods for switching and mixing signals in a multi-channel amplifier
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
US7515072B2 (en) 2003-09-25 2009-04-07 International Rectifier Corporation Method and apparatus for converting PCM to PWM
US7308027B1 (en) * 2004-04-21 2007-12-11 Cirrus Logic, Inc. Circuits and methods for reducing distortion and noise in pulse width modulation systems utilizing full-bridge drivers
US7130346B2 (en) * 2004-05-14 2006-10-31 Freescale Semiconductor, Inc. Method and apparatus having a digital PWM signal generator with integral noise shaping
US7161423B2 (en) * 2004-06-30 2007-01-09 Silicon Laboratories Inc. Parallel power amplifier and associated methods
JP4622423B2 (ja) * 2004-09-29 2011-02-02 日本テキサス・インスツルメンツ株式会社 パルス幅変調信号発生回路
GB2449591B (en) * 2005-01-17 2009-03-18 Wolfson Microelectronics Plc Pulse width modulator quantisation circuit
DE102005006858A1 (de) * 2005-02-15 2006-09-07 Siemens Audiologische Technik Gmbh Hörhilfegerät mit einem Ausgangsverstärker, der einen Sigma-Delta-Modulator umfasst
US7403066B2 (en) 2005-11-10 2008-07-22 Motorola, Inc. Method and system for creating a spectral null in a switching amplifier
JP4587222B2 (ja) * 2005-11-29 2010-11-24 ローム株式会社 Ｄ級アンプ及びこれを備えた音響機器
JP5096710B2 (ja) * 2006-08-29 2012-12-12 パナソニック株式会社 デジタルアンプ装置
DE102007018121B4 (de) * 2007-04-16 2012-12-06 Siemens Medical Instruments Pte. Ltd. Hörvorrichtung mit störarmer Höreransteuerung und entsprechendes Verfahren sowie Hörsystem
US8520881B2 (en) * 2007-04-16 2013-08-27 Siemens Medical Instruments Pte. Ltd. Hearing apparatus with low-interference receiver control and corresponding method
JP4905234B2 (ja) * 2007-04-17 2012-03-28 ヤマハ株式会社 Ｄ級アンプ
KR101169912B1 (ko) 2011-03-15 2012-08-06 주식회사 동부하이텍 대칭 신호 출력 장치 및 증폭기 회로 장치
US8310305B1 (en) * 2011-04-14 2012-11-13 Rockwell Collins, Inc. Tapered-impedance distributed switching power amplifiers
EP2573938A1 (en) * 2011-09-22 2013-03-27 Alcatel Lucent A method for signal amplification based on pulse width modulation
CN102684701B (zh) * 2012-04-27 2014-07-09 苏州上声电子有限公司 基于编码转换的数字扬声器驱动方法和装置
JP6249204B2 (ja) * 2013-04-22 2017-12-20 国立大学法人 名古屋工業大学 パルス幅変調信号生成器およびフルデジタルアンプおよびデジタル−アナログ変換器
US8988049B2 (en) 2013-06-19 2015-03-24 Futurewei Technologies, Inc. Multiple switch power stage control tracking PCM signal input
US9014300B2 (en) 2013-09-12 2015-04-21 Qualcomm Incorporated Switched-mode high-linearity transmitter using pulse width modulation
JP7741804B2 (ja) * 2020-07-21 2025-09-18 ソニーセミコンダクタソリューションズ株式会社 電子機器、および電気音響変換装置

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US6100729A (en) * 1998-03-25 2000-08-08 Mitsubishi Denki Kabushiki Kaisha Output circuit, pulse width modulating circuit and semiconductor integrated circuit in which the level of ringing is reduced

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JPH02177605A (ja) 1988-12-28 1990-07-10 Pioneer Electron Corp パルス幅変調増幅回路
US5077539A (en) 1990-12-26 1991-12-31 Apogee Technology, Inc. Switching amplifier
KR960002004B1 (ko) * 1991-02-19 1996-02-09 가부시키가이샤 도시바 기록검증 제어회로를 갖춘 전기적으로 소거 및 프로그램가능한 독출전용 기억장치
US5398003A (en) 1994-03-30 1995-03-14 Apple Computer, Inc. Pulse width modulation speaker amplifier
US5617058A (en) * 1995-11-13 1997-04-01 Apogee Technology, Inc. Digital signal processing for linearization of small input signals to a tri-state power switch
US5818260A (en) * 1996-04-24 1998-10-06 National Semiconductor Corporation Transmission line driver having controllable rise and fall times with variable output low and minimal on/off delay
US5973368A (en) * 1996-06-05 1999-10-26 Pearce; Lawrence G. Monolithic class D amplifier
US6111431A (en) * 1998-05-14 2000-08-29 National Semiconductor Corporation LVDS driver for backplane applications
JP2000031810A (ja) * 1998-07-10 2000-01-28 Fujitsu Ltd ドライバ回路
WO2000007291A2 (en) 1998-07-24 2000-02-10 Toccata Technology Aps A method of attenuating zero crossing distortion and noise in an amplifier, an amplifier and uses of the method and the amplifier
US6262616B1 (en) * 1999-10-08 2001-07-17 Cirrus Logic, Inc. Open loop supply independent digital/logic delay circuit

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Publication number Priority date Publication date Assignee Title
US6100729A (en) * 1998-03-25 2000-08-08 Mitsubishi Denki Kabushiki Kaisha Output circuit, pulse width modulating circuit and semiconductor integrated circuit in which the level of ringing is reduced

Also Published As

Publication number Publication date
JP4210594B2 (ja) 2009-01-21
WO2003021770A1 (en) 2003-03-13
EP1423912A1 (en) 2004-06-02
TWI240484B (en) 2005-09-21
JP2005509338A (ja) 2005-04-07
US6605991B2 (en) 2003-08-12
US20030042976A1 (en) 2003-03-06
KR20040039310A (ko) 2004-05-10

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