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PT935846E - Amplificador de potencia de modulacao de impulso com um processo de controlo de cascata melhorado - Google Patents

Amplificador de potencia de modulacao de impulso com um processo de controlo de cascata melhorado

Info

Publication number
PT935846E
PT935846E PT97910272T PT97910272T PT935846E PT 935846 E PT935846 E PT 935846E PT 97910272 T PT97910272 T PT 97910272T PT 97910272 T PT97910272 T PT 97910272T PT 935846 E PT935846 E PT 935846E
Authority
PT
Portugal
Prior art keywords
pulse modulation
control process
power amplifier
modulation power
cascade control
Prior art date
Application number
PT97910272T
Other languages
English (en)
Inventor
Nielsen Karsten
Original Assignee
Bang & Olufsen As
Nielsen Karsten
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 Bang & Olufsen As, Nielsen Karsten filed Critical Bang & Olufsen As
Publication of PT935846E publication Critical patent/PT935846E/pt

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
    • 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/083—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements in transistor amplifiers
    • 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)
PT97910272T 1996-10-31 1997-10-31 Amplificador de potencia de modulacao de impulso com um processo de controlo de cascata melhorado PT935846E (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK121496 1996-10-31

Publications (1)

Publication Number Publication Date
PT935846E true PT935846E (pt) 2004-04-30

Family

ID=8102265

Family Applications (1)

Application Number Title Priority Date Filing Date
PT97910272T PT935846E (pt) 1996-10-31 1997-10-31 Amplificador de potencia de modulacao de impulso com um processo de controlo de cascata melhorado

Country Status (13)

Country Link
US (1) US6297692B1 (pt)
EP (2) EP1376858B1 (pt)
JP (1) JP3346579B2 (pt)
KR (1) KR100394846B1 (pt)
CN (1) CN1123115C (pt)
AT (2) ATE315285T1 (pt)
AU (1) AU734813B2 (pt)
CA (1) CA2271041C (pt)
DE (2) DE69726592T2 (pt)
DK (1) DK0935846T3 (pt)
ES (1) ES2212082T3 (pt)
PT (1) PT935846E (pt)
WO (1) WO1998019391A2 (pt)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1237721C (zh) 1996-03-28 2006-01-18 得州仪器丹麦有限公司 脉码调制信号向均匀脉宽调制信号的转换
US6788792B1 (en) * 1998-06-26 2004-09-07 Yamaha Corporation Device for amplitude adjustment and rectification made with MOS technology
US7215191B2 (en) * 1998-06-26 2007-05-08 Yamaha Corporation Device for amplitude adjustment and rectification made with MOS technology
US6414614B1 (en) * 1999-02-23 2002-07-02 Cirrus Logic, Inc. Power output stage compensation for digital output amplifiers
US6351184B1 (en) * 1999-07-29 2002-02-26 Tripath Technology, Inc. Dynamic switching frequency control for a digital switching amplifier
FI107659B (fi) * 1999-11-26 2001-09-14 Nokia Mobile Phones Ltd Signaalin laadun parantaminen
US6441685B1 (en) 2000-03-17 2002-08-27 Jl Audio, Inc. Amplifier circuit and method for providing negative feedback thereto
AT410152B (de) * 2000-06-07 2003-02-25 Bier Guenther Ing Verfahren und vorrichtung zur erzeugung einer einem eingangs-datenstrom folgenden wechselspannung
EP1178388B1 (en) * 2000-08-04 2006-06-28 STMicroelectronics S.r.l. PCM/PWM converter with PWM power amplifier
US7911324B2 (en) * 2001-02-16 2011-03-22 Automotive Technologies International, Inc. Method and system for obtaining information about RFID-equipped objects
SE0003342D0 (sv) * 2000-09-19 2000-09-19 Bang & Olufsen Powerhouse As Controlled self-oscillation modulator and power conversion system using such a modulator
US6362702B1 (en) 2000-09-29 2002-03-26 Bang & Olufsen Powerhouse A/S Controlled self-oscillation modulator and power conversion system using such a modulator
US6975843B2 (en) 2000-12-21 2005-12-13 Telefonaktiebolaget L M Ericsson (Publ) Method and an arrangement relating to telecommunications systems
EP1229641B1 (en) 2001-02-01 2013-11-06 Alcatel Lucent Self oscillating power amplifier
US9084076B2 (en) 2001-02-16 2015-07-14 Intelligent Technologies International, Inc. Techniques for obtaining information about objects
SE520530C2 (sv) * 2001-04-26 2003-07-22 Ericsson Telefon Ab L M Linjäriserad omkopplarbaserad effektförstärkare
GB0110340D0 (en) * 2001-04-27 2001-06-20 Watts Robert D A signal processing circuit
WO2003005570A1 (en) * 2001-07-03 2003-01-16 Niigata Seimitsu Co., Ltd. Audio reproducing device and method, audio amplifier, and integrated circuit for audio amplifier
US7200187B2 (en) * 2001-07-26 2007-04-03 O'brien Thomas J Modulator for digital amplifier
JP3941443B2 (ja) * 2001-09-27 2007-07-04 ヤマハ株式会社 自走式ｐｗｍ増幅器
US20030095000A1 (en) * 2001-11-16 2003-05-22 Acoustic Technology, Inc. Apparatus with ultra high output power class D audio amplifier
US20030095666A1 (en) * 2001-11-16 2003-05-22 Ramage Robert D. Machine for controlling and amplifying a low-level audio signal using a high efficiency class D switching amplifier
AU2002358454A1 (en) * 2001-11-30 2003-06-10 Sonion A/S A high efficiency driver for miniature loudspeakers
AT411415B (de) * 2001-12-11 2003-12-29 Bier Guenther Ing Verfahren und vorrichtung zur erzeugung einer einem eingangs-datenstrom folgenden wechselspannung
SE0104401D0 (sv) * 2001-12-21 2001-12-21 Bang & Olufsen Powerhouse As Syncronized controlled oscillation modulator
CN1643784A (zh) * 2002-01-18 2005-07-20 美国技术公司 调制器放大器
US7113038B2 (en) * 2002-04-19 2006-09-26 Koninklijke Philips Electronics N.V. Power amplifier
CN1277351C (zh) * 2002-10-03 2006-09-27 三菱电机株式会社 D类放大器
JP3776392B2 (ja) * 2002-10-03 2006-05-17 三菱電機株式会社 Ｄ級増幅器
SE0203403D0 (sv) * 2002-11-15 2002-11-15 Bang & Olufsen Icepower As Pulse modulated power converter
EP1632024A2 (en) * 2003-05-09 2006-03-08 Danmarks Tekniske Universitet Global loop integrating modulator
US7002406B2 (en) 2003-05-16 2006-02-21 Texas Instruments Incorporated Loop filter for class D amplifiers
WO2005002050A1 (en) * 2003-06-27 2005-01-06 Tc Electronic A/S Self-oscillating power circuit
US7551022B2 (en) 2003-10-10 2009-06-23 Tc Electronic A/S Power supply compensation
US20060044057A1 (en) * 2004-08-26 2006-03-02 Rahmi Hezar Class-D amplifier having high order loop filtering
WO2006045147A2 (en) * 2004-10-27 2006-05-04 Extraordinary Technology Pty Ltd Low distortion class-d amplifier
US20060115280A1 (en) * 2004-11-30 2006-06-01 Chang Jae J Optical link bandwidth improvement
MY138040A (en) * 2005-02-17 2009-04-30 Tube Amp Sdn Bhd Apparatus for providing amplification with multi-feedback path
EP1922805A1 (en) 2005-09-01 2008-05-21 Danmarks Tekniske Universitet A self-oscillating modulator
US8036402B2 (en) 2005-12-15 2011-10-11 Harman International Industries, Incorporated Distortion compensation
EP1830464A1 (en) * 2006-03-01 2007-09-05 Danmarks Tekniske Universitet Digital self-oscillating modulator
WO2007098766A1 (en) * 2006-03-01 2007-09-07 Danmarks Teknishe Universitet Digital self-oscillating modulator
ATE519275T1 (de) * 2006-03-03 2011-08-15 Bang & Olufsen Icepower As Hybrider rückkopplungsgeregelter oszillationsmodulator und schaltleistungsverstärkersystem
EP1843465A1 (en) * 2006-03-29 2007-10-10 STMicroelectronics S.r.l. Multiple feedback class-D amplifier
US7400191B2 (en) 2006-04-07 2008-07-15 Manuel De Jesus Rodriguez Switching power amplifier
DE102006026906B4 (de) * 2006-06-09 2011-02-10 Infineon Technologies Ag Schaltung und Verfahren zur Pulsweitenmodulation mittels synchronisierter, selbstoszillierender Pulsweitenmodulatoren
US20100052805A1 (en) * 2006-07-11 2010-03-04 Tc Group A/S High-mode self-oscillating pulse modulator
EP2070190B1 (en) * 2006-09-28 2011-09-07 Pascal A/S Controlled power converter
US7576604B2 (en) 2006-12-15 2009-08-18 Bin Xu All-digital class-D audio amplifier
US7705672B1 (en) 2007-02-12 2010-04-27 Manuel De Jesus Rodriguez Buck converters as power amplifier
FR2915036B1 (fr) * 2007-04-13 2009-07-03 Anagram Technologies Dispositif de modulation de signaux en largeurs d'impulsions a trois niveaux et amplificateur numerique mettant en oeuvre un tel dispositif.
KR101445721B1 (ko) * 2008-02-01 2014-09-26 삼성전자 주식회사 멀티 페이즈 클럭신호를 이용한 고속 다단 증폭기 및증폭기의 세틀링 방법
US7791521B2 (en) * 2008-04-01 2010-09-07 Silicon Laboratories, Inc. System and method of changing a PWM power spectrum
US7701307B2 (en) * 2008-04-01 2010-04-20 Silicon Laboratories, Inc. System and method of changing a PWM power spectrum
US7598895B1 (en) * 2008-04-01 2009-10-06 Silicon Laboratories, Inc. System and method of altering a PWM carrier power spectrum
KR20100008749A (ko) * 2008-07-16 2010-01-26 삼성전자주식회사 스위칭 파워 증폭 장치 및 그 제어 방법
US8130128B2 (en) 2010-03-30 2012-03-06 Silicon Laboratores Inc. System and method for generating shaped noise
JP5355496B2 (ja) * 2010-05-24 2013-11-27 三菱電機株式会社 バイアス制御増幅器
KR101802333B1 (ko) 2011-10-17 2017-12-29 삼성전자주식회사 오디오 신호 출력 방법 및 그에 따른 오디오 신호 처리 장치
US10038411B2 (en) * 2016-10-31 2018-07-31 Rgb Systems, Inc. Method and apparatus for distortion reduction in a class D amplifier
US10110181B2 (en) * 2016-12-30 2018-10-23 Texas Instruments Incorporated Class-D amplifier with post filter feedback loop
EP3416285B1 (en) 2017-06-16 2021-06-02 ICEpower a/s Self-oscillating amplifier system
KR20200096278A (ko) 2017-12-07 2020-08-11 퓨리파이 에이피에스 증폭기 회로
EP3721555B1 (en) 2017-12-07 2023-09-06 Purifi ApS An amplifier with an at least second order filter in the control loop
EP3721553B1 (en) * 2017-12-07 2023-09-06 Purifi ApS An amplifier with a compensator with a network of at least third order
US11190148B2 (en) * 2020-01-02 2021-11-30 Cirrus Logic, Inc. Minimizing idle channel noise in a class-D pulse width modulation amplifier
US11128270B1 (en) * 2020-05-21 2021-09-21 Qsc, Llc Class-D amplifier with nested feedback loops
EP4102717A1 (en) 2021-06-08 2022-12-14 ICEpower a/s Self-oscillating class d audio amplifier with voltage limiting circuit
DE102022116446A1 (de) 2022-07-01 2024-01-04 Sennheiser Electronic Gmbh & Co. Kg Lautsprecher-Leistungsverstärker und Lautsprecher

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818804B2 (ja) 1974-12-18 1983-04-14 ソニー株式会社 パルス幅変調増巾回路
JPS5947486B2 (ja) 1976-12-06 1984-11-19 ソニー株式会社 パルス幅変調増巾回路
JPS59814Y2 (ja) * 1977-04-22 1984-01-11 ブライアン・ア−ネスト・アトウツド Ｄ級増幅器
JPS5639606A (en) * 1979-09-07 1981-04-15 Matsushita Electric Ind Co Ltd Self-excited type d-class amplifier
JPS58130617A (ja) * 1982-01-29 1983-08-04 Nippon Gakki Seizo Kk パルス幅変調回路
US4524335A (en) * 1982-03-13 1985-06-18 Nippon Gakki Seizo Kabushiki Kaisha Pulse-width modulation circuit with carrier signal frequency control
JPS5967719A (ja) * 1982-10-09 1984-04-17 Nippon Gakki Seizo Kk パルス幅変調回路
US4724396A (en) 1984-08-21 1988-02-09 Peavey Electronics Corporation Digital audio amplifier
US5218315A (en) * 1992-01-06 1993-06-08 Infinity Systems, Inc. Switching amplifier
US5352986A (en) * 1993-01-22 1994-10-04 Digital Fidelity, Inc. Closed loop power controller
US5410592A (en) * 1993-06-04 1995-04-25 Harris Corporation Class `D` audio speaker amplifier circuit with state variable feedback control
US5815581A (en) 1995-10-19 1998-09-29 Mitel Semiconductor, Inc. Class D hearing aid amplifier with feedback
US5777512A (en) * 1996-06-20 1998-07-07 Tripath Technology, Inc. Method and apparatus for oversampled, noise-shaping, mixed-signal processing
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
US5949282A (en) * 1998-02-25 1999-09-07 National Semiconductor Corporation Class D amplifier no low pass filter feedback with zero phase delay
US6064259A (en) * 1998-07-24 2000-05-16 Nikon Corporation Of America High power, high performance pulse width modulation amplifier

Also Published As

Publication number Publication date
AU4772897A (en) 1998-05-22
CN1235711A (zh) 1999-11-17
KR100394846B1 (ko) 2003-08-19
WO1998019391A2 (en) 1998-05-07
DE69735029D1 (de) 2006-03-30
DK0935846T3 (da) 2004-03-22
CA2271041C (en) 2003-03-18
DE69726592T2 (de) 2004-11-11
EP1376858A1 (en) 2004-01-02
ES2212082T3 (es) 2004-07-16
JP3346579B2 (ja) 2002-11-18
DE69735029T2 (de) 2006-09-14
WO1998019391A3 (en) 1998-07-23
EP1376858B1 (en) 2006-01-04
CA2271041A1 (en) 1998-05-07
ATE315285T1 (de) 2006-02-15
DE69726592D1 (de) 2004-01-15
CN1123115C (zh) 2003-10-01
JP2001503575A (ja) 2001-03-13
EP0935846B1 (en) 2003-12-03
US6297692B1 (en) 2001-10-02
EP0935846A2 (en) 1999-08-18
AU734813B2 (en) 2001-06-21
KR20000052932A (ko) 2000-08-25
ATE255784T1 (de) 2003-12-15

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