DE69522092D1 - Klasse-D Verstärker mit einpoliger negativer Rückkopplung - Google Patents

Klasse-D Verstärker mit einpoliger negativer Rückkopplung

Info

Publication number
DE69522092D1
DE69522092D1 DE69522092T DE69522092T DE69522092D1 DE 69522092 D1 DE69522092 D1 DE 69522092D1 DE 69522092 T DE69522092 T DE 69522092T DE 69522092 T DE69522092 T DE 69522092T DE 69522092 D1 DE69522092 D1 DE 69522092D1
Authority
DE
Germany
Prior art keywords
amplifier
class
negative feedback
pole negative
pole
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
DE69522092T
Other languages
English (en)
Other versions
DE69522092T2 (de
Inventor
Marco Masini
Stefania Baiocchi
Edoardo Botti
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.)
STMicroelectronics SRL
Original Assignee
STMicroelectronics SRL
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 STMicroelectronics SRL filed Critical STMicroelectronics SRL
Publication of DE69522092D1 publication Critical patent/DE69522092D1/de
Application granted granted Critical
Publication of DE69522092T2 publication Critical patent/DE69522092T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H03F1/08—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
    • 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
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
DE69522092T 1995-02-28 1995-02-28 Klasse-D Verstärker mit einpoliger negativer Rückkopplung Expired - Fee Related DE69522092T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95830063A EP0730344B1 (de) 1995-02-28 1995-02-28 Klasse-D Verstärker mit einpoliger negativer Rückkopplung

Publications (2)

Publication Number Publication Date
DE69522092D1 true DE69522092D1 (de) 2001-09-13
DE69522092T2 DE69522092T2 (de) 2002-04-11

Family

ID=8221860

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69522092T Expired - Fee Related DE69522092T2 (de) 1995-02-28 1995-02-28 Klasse-D Verstärker mit einpoliger negativer Rückkopplung

Country Status (4)

Country Link
US (1) US5796302A (de)
EP (1) EP0730344B1 (de)
JP (1) JPH08265059A (de)
DE (1) DE69522092T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6545533B2 (en) 2000-12-18 2003-04-08 Texas Instruments Incorporated Class D audio speaker amplifier circuit with pseudo noise modulation
WO2003005570A1 (fr) * 2001-07-03 2003-01-16 Niigata Seimitsu Co., Ltd. Dispositif et procede de reproduction audio, amplificateur audio et circuit integre d'amplificateur audio
DE10300195A1 (de) * 2003-01-08 2004-07-22 Althoff, Jürgen, Dipl.-Ing. Class D Röhrenverstärker
US7046727B2 (en) 2004-05-05 2006-05-16 Monolithic Power Systems, Inc. Method and apparatus for self-oscillating differential feedback class-D amplifier
US7554391B1 (en) 2008-01-11 2009-06-30 Freescale Semiconductor, Inc. Amplifier having a virtual ground and method thereof
US8553909B2 (en) 2011-04-29 2013-10-08 Smsc Holdings S.A.R.L. Low-power class D amplifier using multistate analog feedback loops

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537022A (en) * 1968-01-10 1970-10-27 Hewlett Packard Co Signal translating circuit
US4403196A (en) * 1981-04-22 1983-09-06 The United States Of America As Represented By The Secretary Of The Air Force Pulse width modulated power amplifier with differential connecting line voltage drop comparators
US5218315A (en) * 1992-01-06 1993-06-08 Infinity Systems, Inc. Switching amplifier

Also Published As

Publication number Publication date
EP0730344B1 (de) 2001-08-08
US5796302A (en) 1998-08-18
EP0730344A1 (de) 1996-09-04
JPH08265059A (ja) 1996-10-11
DE69522092T2 (de) 2002-04-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee