JP5388362B2 - デジタルアンプ - Google Patents

デジタルアンプ Download PDF

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Publication number
JP5388362B2
JP5388362B2 JP2010054643A JP2010054643A JP5388362B2 JP 5388362 B2 JP5388362 B2 JP 5388362B2 JP 2010054643 A JP2010054643 A JP 2010054643A JP 2010054643 A JP2010054643 A JP 2010054643A JP 5388362 B2 JP5388362 B2 JP 5388362B2
Authority
JP
Japan
Prior art keywords
unit
signal
digital amplifier
switching
input
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.)
Expired - Fee Related
Application number
JP2010054643A
Other languages
English (en)
Japanese (ja)
Other versions
JP2011188447A (ja
JP2011188447A5 (https=
Inventor
宙 菅原
寿幸 佐々木
茂樹 庭山
佳樹 前田
智臣 ▲高▼野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Roland Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Roland Corp
Matsushita Electric Industrial Co Ltd
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 Panasonic Corp, Roland Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP2010054643A priority Critical patent/JP5388362B2/ja
Priority to US13/583,447 priority patent/US8975956B2/en
Priority to CN201180013478.2A priority patent/CN102792586B/zh
Priority to PCT/JP2011/000670 priority patent/WO2011111298A1/ja
Publication of JP2011188447A publication Critical patent/JP2011188447A/ja
Publication of JP2011188447A5 publication Critical patent/JP2011188447A5/ja
Application granted granted Critical
Publication of JP5388362B2 publication Critical patent/JP5388362B2/ja
Priority to US14/540,296 priority patent/US9083283B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • 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
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/171—A filter circuit coupled to the output of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/324—An amplitude modulator or demodulator being used in the amplifier circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
JP2010054643A 2010-03-11 2010-03-11 デジタルアンプ Expired - Fee Related JP5388362B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2010054643A JP5388362B2 (ja) 2010-03-11 2010-03-11 デジタルアンプ
US13/583,447 US8975956B2 (en) 2010-03-11 2011-02-07 Digital amplifier
CN201180013478.2A CN102792586B (zh) 2010-03-11 2011-02-07 数字放大器
PCT/JP2011/000670 WO2011111298A1 (ja) 2010-03-11 2011-02-07 デジタルアンプ
US14/540,296 US9083283B2 (en) 2010-03-11 2014-11-13 Digital amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010054643A JP5388362B2 (ja) 2010-03-11 2010-03-11 デジタルアンプ

Publications (3)

Publication Number Publication Date
JP2011188447A JP2011188447A (ja) 2011-09-22
JP2011188447A5 JP2011188447A5 (https=) 2013-01-10
JP5388362B2 true JP5388362B2 (ja) 2014-01-15

Family

ID=44563136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010054643A Expired - Fee Related JP5388362B2 (ja) 2010-03-11 2010-03-11 デジタルアンプ

Country Status (4)

Country Link
US (2) US8975956B2 (https=)
JP (1) JP5388362B2 (https=)
CN (1) CN102792586B (https=)
WO (1) WO2011111298A1 (https=)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5454560B2 (ja) * 2011-12-06 2014-03-26 オンキヨー株式会社 スイッチングアンプ
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
JP6222980B2 (ja) * 2013-05-09 2017-11-01 キヤノン株式会社 音響装置及び電子機器
JP6461510B2 (ja) * 2014-08-06 2019-01-30 ローム株式会社 オーディオアンプ用の電源回路、電子機器、オーディオアンプへの電源電圧の供給方法
JP6765035B2 (ja) 2014-12-24 2020-10-07 パナソニックＩｐマネジメント株式会社 音声信号増幅装置
JP6397811B2 (ja) * 2015-12-18 2018-09-26 株式会社東芝 半導体集積回路及び高周波アンテナスイッチ
US10218312B2 (en) 2016-02-29 2019-02-26 Qualcomm Incorporated Dynamic volume management in audio amplifiers
US10256777B2 (en) 2016-02-29 2019-04-09 Qualcomm Incorporated Audio amplifiers
US20170250654A1 (en) * 2016-02-29 2017-08-31 Qualcomm Incorporated Dynamic dead time management
WO2019012934A1 (ja) * 2017-07-13 2019-01-17 シャープ株式会社 デジタルアンプおよび出力装置
CN107994877B (zh) * 2017-11-10 2021-08-27 矽恩微电子(厦门)有限公司 一种低辐射干扰，高效率，线性度高，鲁棒性的d类音频放大器的功率管驱动器
US11189315B2 (en) 2018-03-28 2021-11-30 Panasonic Intellectual Property Management Co., Ltd. Audio processing device
US11552602B2 (en) * 2020-05-13 2023-01-10 Mediatek Inc. Class-D amplifier with high dynamic range

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09148851A (ja) * 1995-11-17 1997-06-06 Matsushita Electric Ind Co Ltd オーディオ用スイッチング電源
JPH10303657A (ja) * 1997-04-28 1998-11-13 Nec Corp Ｐｗｍ駆動装置
JP2004072707A (ja) * 2002-06-13 2004-03-04 Sony Corp パワーアンプ装置
JP3499236B1 (ja) 2002-08-28 2004-02-23 株式会社フライングモール ディジタル電力増幅器
JP4111845B2 (ja) * 2003-02-28 2008-07-02 三菱電機株式会社 Ｄ級増幅器
US6924700B2 (en) 2002-10-03 2005-08-02 Mitsubishi Denki Kabushiki Kaisha Class D amplifier
CN100468960C (zh) * 2003-11-26 2009-03-11 雅马哈株式会社 D类放大器
US20070279101A1 (en) 2004-04-21 2007-12-06 Takeshi Onodera Signal Output Circuit, Audio Signal Output Apparatus Using The Same, And Electronic Device
JP2005341327A (ja) * 2004-05-28 2005-12-08 Victor Co Of Japan Ltd 電力増幅装置
JP4421949B2 (ja) * 2004-06-07 2010-02-24 アルパイン株式会社 デジタルアンプ
KR100617960B1 (ko) * 2005-02-24 2006-08-30 삼성전자주식회사 자가 발진형 펄스 폭 변조회로 및 펄스 폭 변조 방법
TWI361559B (en) * 2005-03-07 2012-04-01 Monolithic Power Systems Inc Audio amplifier with high power and high efficiency
JP2007088926A (ja) * 2005-09-22 2007-04-05 Victor Co Of Japan Ltd Ｄクラスアンプ
TWI329983B (en) * 2006-11-27 2010-09-01 Realtek Semiconductor Corp Methods for controlling power stage of power amplifier and related apparatuses
US8022756B2 (en) * 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
JP2009033430A (ja) * 2007-07-26 2009-02-12 Denso Corp ディジタルアンプ
JP4978409B2 (ja) * 2007-10-03 2012-07-18 パナソニック株式会社 デジタル増幅装置
JP4885831B2 (ja) * 2007-11-29 2012-02-29 シャープ株式会社 Δς変調装置、遮断方法、プログラム、および、記録媒体
US7825726B2 (en) * 2008-10-30 2010-11-02 Freescale Semiconductor, Inc. Digital pulse width modulation for half bridge amplifiers
US8330538B2 (en) * 2009-11-11 2012-12-11 Amazing Microelectronic Corp. Self-oscillating audio amplifier and method for restraining the improved self-oscillating audio amplifier
US20130089161A1 (en) * 2011-10-06 2013-04-11 Douglas E. Heineman Low-Power Modulation in an Amplifier

Also Published As

Publication number Publication date
US20130021096A1 (en) 2013-01-24
US9083283B2 (en) 2015-07-14
WO2011111298A1 (ja) 2011-09-15
CN102792586B (zh) 2015-08-12
JP2011188447A (ja) 2011-09-22
CN102792586A (zh) 2012-11-21
US8975956B2 (en) 2015-03-10
US20150171795A1 (en) 2015-06-18

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