CN101278477B - 数字音频放大器及其数字音频放大方法 - Google Patents

数字音频放大器及其数字音频放大方法 Download PDF

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Publication number
CN101278477B
CN101278477B CN200680036154XA CN200680036154A CN101278477B CN 101278477 B CN101278477 B CN 101278477B CN 200680036154X A CN200680036154X A CN 200680036154XA CN 200680036154 A CN200680036154 A CN 200680036154A CN 101278477 B CN101278477 B CN 101278477B
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CN
China
Prior art keywords
audio signal
amplifier
output
integrated circuit
digital audio
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Expired - Fee Related
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CN200680036154XA
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English (en)
Chinese (zh)
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CN101278477A (zh
Inventor
文炳敏
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Publication of CN101278477A publication Critical patent/CN101278477A/zh
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Expired - Fee Related legal-status Critical Current
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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
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • 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
    • H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/307—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in 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
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • 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
    • H03F2200/504—Indexing scheme relating to amplifiers the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/541—Transformer coupled at the output of an amplifier

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
CN200680036154XA 2005-10-24 2006-10-24 数字音频放大器及其数字音频放大方法 Expired - Fee Related CN101278477B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2005-0100402 2005-10-24
KR1020050100402A KR101128520B1 (ko) 2005-10-24 2005-10-24 디지털 오디오 증폭기 및 이에 적합한 디지털 오디오 신호증폭 방법
PCT/KR2006/004341 WO2007049898A1 (en) 2005-10-24 2006-10-24 Digital audio amplifier and digital audio amplifying method therefor

Publications (2)

Publication Number Publication Date
CN101278477A CN101278477A (zh) 2008-10-01
CN101278477B true CN101278477B (zh) 2011-05-18

Family

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Family Applications (1)

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CN200680036154XA Expired - Fee Related CN101278477B (zh) 2005-10-24 2006-10-24 数字音频放大器及其数字音频放大方法

Country Status (5)

Country Link
US (1) US7952426B2 (https=)
JP (1) JP5415765B2 (https=)
KR (1) KR101128520B1 (https=)
CN (1) CN101278477B (https=)
WO (1) WO2007049898A1 (https=)

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US8212613B1 (en) 2011-09-21 2012-07-03 Wen-Hsiung Hsieh Switching amplifier using flyback transformer
US8451057B2 (en) 2011-11-02 2013-05-28 Wen-Hsiung Hsieh Switching amplifier using inductor current feedback
US9602067B2 (en) * 2011-11-15 2017-03-21 Wen-Hsiung Hsieh Switching amplifier with pulsed current supply
US8416020B1 (en) 2011-11-20 2013-04-09 Wen-Hsiung Hsieh Switching amplifier and switching amplifying method
US8432221B1 (en) 2011-11-27 2013-04-30 Wen-Hsiung Hsieh Switching amplifying method and switching amplifier
US8525587B2 (en) 2011-12-04 2013-09-03 Wen-Hsiung Hsieh Switching amplifier with inductance means for transmitting energy
CN102412741A (zh) * 2011-12-12 2012-04-11 西安福安创意咨询有限责任公司 一种日光灯隔离型双电源方法
US8760230B2 (en) 2012-06-28 2014-06-24 Wen-Hsiung Hsieh Switching amplifier with pulsed current source and sink
CN105075091B (zh) * 2012-11-28 2018-03-02 广东锐顶电力技术有限公司 超高效率单级隔离式开关功率放大器
US9293997B2 (en) 2013-03-14 2016-03-22 Analog Devices Global Isolated error amplifier for isolated power supplies
CN104092369B (zh) * 2014-06-27 2017-01-11 北京控制工程研究所 一种基于数字光耦的开关电源反馈电路
CN104408835B (zh) * 2014-10-21 2018-01-12 深圳市易联技术有限公司 一种应用于pos终端有线音频通信中的抗干扰装置
KR101619837B1 (ko) 2014-11-20 2016-05-11 서용상 디급 디지털 증폭기
CN104581530B (zh) * 2014-12-23 2018-12-28 福建星网视易信息系统有限公司 一种降低信号噪音的电路、装置和系统
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CN105306044B (zh) * 2015-11-20 2019-03-12 中国航天科技集团公司第五研究院第五一三研究所 一种信号完全隔离的滤波电路
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CN107333213B (zh) * 2017-08-30 2024-02-13 东莞精恒电子有限公司 一种脉宽调制300w+双150w(pfc)功放模组
EP3505034B1 (en) * 2017-12-28 2025-02-12 Makita Corporation Interlocking adapter, and method for operating electric apparatus in interlocking manner with working machine
CN109065011B (zh) * 2018-09-05 2024-04-05 厦门轻唱科技有限公司 卡拉ok一体机以及k歌系统
KR102112253B1 (ko) * 2019-12-24 2020-05-18 가락전자 주식회사 전원 증폭기와 음향 증폭기가 일체화된 고효율 음향 증폭 장치
KR102156327B1 (ko) * 2020-05-21 2020-09-15 (주)아이엠피 단일권선 변압기와 스너버 캐패시터를 이용한 절연형 Class D 오디오 앰프
KR102156325B1 (ko) * 2020-05-21 2020-09-15 (주)아이엠피 센터탭 변압기의 유니폴라 동기식 절연형 Class D 오디오 앰프
KR102156315B1 (ko) * 2020-05-21 2020-09-15 (주)아이엠피 절연형 Class D 오디오 앰프
KR102156330B1 (ko) * 2020-05-21 2020-09-15 (주)아이엠피 센터탭 변압기와 스너버 캐패시터를 이용한 절연형 Class D 오디오 앰프
KR102156322B1 (ko) * 2020-05-21 2020-09-15 (주)아이엠피 단일권선 변압기의 유니폴라 동기식 절연형 Class D 오디오 앰프
CN112865722B (zh) * 2021-01-08 2022-06-14 四川湖山电器股份有限公司 一种数字功率放大器过流保护检测电路及数字功率放大器

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CN1105788A (zh) * 1993-06-04 1995-07-26 哈里公司 具有状态可变的反馈控制的d类音频扬声器放大器电路
CN1497839A (zh) * 2002-10-03 2004-05-19 三菱电机株式会社 D类放大器
CN1549445A (zh) * 2003-05-20 2004-11-24 磊 庄 数字功放定压输出方法
CN1605149A (zh) * 2001-12-17 2005-04-06 皇家飞利浦电子股份有限公司 具有同步开关支路的隔离变换器
CN2722488Y (zh) * 2004-03-15 2005-08-31 深圳市中资源科技发展有限公司 一种手机电池充电器

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CN1105788A (zh) * 1993-06-04 1995-07-26 哈里公司 具有状态可变的反馈控制的d类音频扬声器放大器电路
CN1605149A (zh) * 2001-12-17 2005-04-06 皇家飞利浦电子股份有限公司 具有同步开关支路的隔离变换器
CN1497839A (zh) * 2002-10-03 2004-05-19 三菱电机株式会社 D类放大器
CN1549445A (zh) * 2003-05-20 2004-11-24 磊 庄 数字功放定压输出方法
CN2722488Y (zh) * 2004-03-15 2005-08-31 深圳市中资源科技发展有限公司 一种手机电池充电器

Also Published As

Publication number Publication date
KR101128520B1 (ko) 2012-03-27
WO2007049898A1 (en) 2007-05-03
US20080252370A1 (en) 2008-10-16
JP2009512333A (ja) 2009-03-19
KR20070044283A (ko) 2007-04-27
US7952426B2 (en) 2011-05-31
CN101278477A (zh) 2008-10-01
JP5415765B2 (ja) 2014-02-12

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Granted publication date: 20110518

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