AU2001280002A1 - Class d audio amplifier - Google Patents

Class d audio amplifier

Info

Publication number
AU2001280002A1
AU2001280002A1 AU2001280002A AU8000201A AU2001280002A1 AU 2001280002 A1 AU2001280002 A1 AU 2001280002A1 AU 2001280002 A AU2001280002 A AU 2001280002A AU 8000201 A AU8000201 A AU 8000201A AU 2001280002 A1 AU2001280002 A1 AU 2001280002A1
Authority
AU
Australia
Prior art keywords
class
audio amplifier
amplifier
audio
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.)
Abandoned
Application number
AU2001280002A
Other languages
English (en)
Inventor
Hideto Takagishi
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.)
Monolithic Power Systems Inc
Original Assignee
Monolithic Power Systems Inc
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
Priority claimed from US09/614,410 external-priority patent/US6420930B1/en
Application filed by Monolithic Power Systems Inc filed Critical Monolithic Power Systems Inc
Publication of AU2001280002A1 publication Critical patent/AU2001280002A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Analogue/Digital Conversion (AREA)
AU2001280002A 2000-07-12 2001-07-06 Class d audio amplifier Abandoned AU2001280002A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09614410 2000-07-12
US09/614,410 US6420930B1 (en) 2000-07-12 2000-07-12 Class D audio amplifier
US09/885,155 US6476673B2 (en) 2000-07-12 2001-06-19 Class D audio amplifier
US09885155 2001-06-19
PCT/IB2001/001526 WO2002005419A2 (en) 2000-07-12 2001-07-06 Class d audio amplifier

Publications (1)

Publication Number Publication Date
AU2001280002A1 true AU2001280002A1 (en) 2002-01-21

Family

ID=27087242

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001280002A Abandoned AU2001280002A1 (en) 2000-07-12 2001-07-06 Class d audio amplifier

Country Status (4)

Country Link
US (2) US6476673B2 (zh)
CN (1) CN1237711C (zh)
AU (1) AU2001280002A1 (zh)
WO (1) WO2002005419A2 (zh)

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FR2812478B1 (fr) * 2000-07-27 2003-01-10 Rene Lambruschi Circuit electronique de conversion d'un signal et amplificateur integrant ledit circuit
US6937090B2 (en) * 2000-08-28 2005-08-30 Jam Technologies, Llc Charge injection reduction technique in single and multi-reference switching amplifiers
JP2002299968A (ja) * 2001-03-30 2002-10-11 Pioneer Electronic Corp Ｄ級アンプ
CN1195353C (zh) * 2001-12-03 2005-03-30 方虎堂 脉冲面积调制数字功率处理方法及装置
US7146015B2 (en) * 2001-12-12 2006-12-05 Motorola Inc. Frequency threshold audio activity detector
KR100433551B1 (ko) * 2002-05-27 2004-05-31 삼성전자주식회사 고압 전원 장치
US6646502B1 (en) * 2002-08-06 2003-11-11 National Semiconductor Corporation Digital-input class-D amplifier
KR100489870B1 (ko) * 2002-09-30 2005-05-17 주식회사 디엠비테크놀로지 게이트 콘트롤러보다 높은 전원전압을 사용하는 전력 모스트랜지스터의 게이트 구동회로
KR100508062B1 (ko) * 2002-10-10 2005-08-17 주식회사 디엠비테크놀로지 자기 발진 주파수를 높이기 위한 위상 진상-지상 보상기를구비하는 디지털 오디오 증폭기
SE0203403D0 (sv) * 2002-11-15 2002-11-15 Bang & Olufsen Icepower As Pulse modulated power converter
US7365598B2 (en) * 2003-05-09 2008-04-29 Danmarks Tekniske Universitet Global loop integrating modulator
US7170266B1 (en) * 2004-06-18 2007-01-30 National Semiconductor Corporation Balanced, floating, spread-spectrum pulse width modulator circuit
JP2006050151A (ja) * 2004-08-03 2006-02-16 Pioneer Electronic Corp Ｄ級増幅器
US20060062026A1 (en) * 2004-09-18 2006-03-23 Wittenbreder Ernest H Jr High efficiency power conversion circuits
TWI315937B (en) 2004-10-18 2009-10-11 Monolithic Power Systems Inc Low noise audio amplifier and the method thereof
US7538611B2 (en) * 2005-03-07 2009-05-26 Monolithic Power Systems, Inc. Audio amplifier with high power and high efficiency
WO2007011012A1 (ja) * 2005-07-21 2007-01-25 Pioneer Corporation 電力増幅装置
DE102005045584A1 (de) * 2005-09-23 2007-04-12 Infineon Technologies Ag Selbstoszillierender Modulator und Verfahren zum Einstellen eines selbstoszillierenden Modulators
EP1843465A1 (en) * 2006-03-29 2007-10-10 STMicroelectronics S.r.l. Multiple feedback class-D amplifier
WO2008006367A1 (en) * 2006-07-11 2008-01-17 The Tc Group A/S A high-mode self-oscillating pulse modulator
US8174316B2 (en) * 2006-10-18 2012-05-08 Apexone Microelectronics Ltd. Switching amplifier
GB0715254D0 (en) * 2007-08-03 2007-09-12 Wolfson Ltd Amplifier circuit
JP2009250807A (ja) * 2008-04-07 2009-10-29 Seiko Epson Corp 周波数測定装置及び測定方法
JP2010271091A (ja) 2009-05-20 2010-12-02 Seiko Epson Corp 周波数測定装置
JP5440999B2 (ja) 2009-05-22 2014-03-12 セイコーエプソン株式会社 周波数測定装置
JP5517033B2 (ja) * 2009-05-22 2014-06-11 セイコーエプソン株式会社 周波数測定装置
JP5582447B2 (ja) 2009-08-27 2014-09-03 セイコーエプソン株式会社 電気回路、同電気回路を備えたセンサーシステム、及び同電気回路を備えたセンサーデバイス
JP5815918B2 (ja) 2009-10-06 2015-11-17 セイコーエプソン株式会社 周波数測定方法、周波数測定装置及び周波数測定装置を備えた装置
JP5876975B2 (ja) 2009-10-08 2016-03-02 セイコーエプソン株式会社 周波数測定装置及び周波数測定装置における変速分周信号の生成方法
JP5883558B2 (ja) 2010-08-31 2016-03-15 セイコーエプソン株式会社 周波数測定装置及び電子機器
US9008333B2 (en) 2011-11-29 2015-04-14 Quilter Labs, LLC Guitar amplifier
CN103296982B (zh) * 2012-02-27 2016-10-05 无锡华润矽科微电子有限公司 D类音频功率放大电路中实现自适应功能的电路结构
CN103338423B (zh) * 2013-05-28 2015-12-09 上海贝岭股份有限公司 一种d类音频功放静音充电电路
US10096705B2 (en) 2014-01-21 2018-10-09 Infineon Technologies Austria Ag Integrated high side gate driver structure and circuit for driving high side power transistors
JP6197824B2 (ja) * 2015-04-17 2017-09-20 オンキヨー株式会社 信号変調回路
CN107370399A (zh) * 2016-05-13 2017-11-21 中兴通讯股份有限公司 一种环路补偿电路、开关电源电路及开关电源充电器
GB2564912B (en) 2017-07-24 2020-09-02 Cirrus Logic Int Semiconductor Ltd Transducer driver circuitry
CN111466080B (zh) * 2017-12-07 2024-05-28 普立菲有限公司 在控制回路中具有至少二阶滤波器的放大器

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US3636380A (en) * 1970-09-04 1972-01-18 Us Navy Power amplifier
JPS5967719A (ja) * 1982-10-09 1984-04-17 Nippon Gakki Seizo Kk パルス幅変調回路
US5077540A (en) 1990-06-14 1991-12-31 University Of Virginia Patents Foundation Minimum pulse width switching power amplifier
US5218315A (en) * 1992-01-06 1993-06-08 Infinity Systems, Inc. Switching amplifier
US5973368A (en) 1996-06-05 1999-10-26 Pearce; Lawrence G. Monolithic class D amplifier
US5777512A (en) 1996-06-20 1998-07-07 Tripath Technology, Inc. Method and apparatus for oversampled, noise-shaping, mixed-signal processing
US5838193A (en) 1996-11-26 1998-11-17 Motorola, Inc. Time-delay compensating wideband class-s modulator and method therefor
US6229393B1 (en) 1997-01-22 2001-05-08 Storz Endoskop Gmbh High frequency power generator
WO1999008378A2 (en) 1997-08-12 1999-02-18 Koninklijke Philips Electronics N.V. Device for amplifying digital signals
US5929776A (en) * 1998-03-23 1999-07-27 Motorola, Inc. Low voltage transceiver
US5986498A (en) 1998-04-14 1999-11-16 Harman International Industries, Incorporated Audio direct from power supply
NL1011002C2 (nl) 1999-01-12 2000-07-20 Univ Eindhoven Tech Versterkerschakeling.
US6297693B1 (en) * 1999-12-23 2001-10-02 Red Chip Company Limited Techniques for synchronizing a self oscillating variable frequency modulator to an external clock

Also Published As

Publication number Publication date
WO2002005419A3 (en) 2002-04-18
US20020005753A1 (en) 2002-01-17
CN1237711C (zh) 2006-01-18
CN1443396A (zh) 2003-09-17
US6489841B2 (en) 2002-12-03
WO2002005419A2 (en) 2002-01-17
US20020097091A1 (en) 2002-07-25
US6476673B2 (en) 2002-11-05

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