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AU2001280068A1 - High-efficiency audio power amplifier - Google Patents

High-efficiency audio power amplifier

Info

Publication number
AU2001280068A1
AU2001280068A1 AU2001280068A AU8006801A AU2001280068A1 AU 2001280068 A1 AU2001280068 A1 AU 2001280068A1 AU 2001280068 A AU2001280068 A AU 2001280068A AU 8006801 A AU8006801 A AU 8006801A AU 2001280068 A1 AU2001280068 A1 AU 2001280068A1
Authority
AU
Australia
Prior art keywords
power amplifier
audio power
efficiency audio
efficiency
amplifier
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
AU2001280068A
Inventor
Meir Shashoua
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.)
K S Waves Ltd
Original Assignee
K S Waves 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 K S Waves Ltd filed Critical K S Waves Ltd
Publication of AU2001280068A1 publication Critical patent/AU2001280068A1/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
    • H03F3/2178—Class D power amplifiers; Switching amplifiers using more than one switch or switching amplifier in parallel or in series
    • 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
    • H03F1/0244—Stepped control
    • 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)
AU2001280068A 2000-08-14 2001-08-13 High-efficiency audio power amplifier Abandoned AU2001280068A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/638,568 US6373340B1 (en) 2000-08-14 2000-08-14 High-efficiency audio power amplifier
US09/638,568 2000-08-14
PCT/IL2001/000748 WO2002015386A2 (en) 2000-08-14 2001-08-13 High-efficiency audio power amplifier

Publications (1)

Publication Number Publication Date
AU2001280068A1 true AU2001280068A1 (en) 2002-02-25

Family

ID=24560558

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001280068A Abandoned AU2001280068A1 (en) 2000-08-14 2001-08-13 High-efficiency audio power amplifier

Country Status (4)

Country Link
US (1) US6373340B1 (en)
AU (1) AU2001280068A1 (en)
IL (1) IL138842A0 (en)
WO (1) WO2002015386A2 (en)

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US7834702B2 (en) * 2007-10-16 2010-11-16 Thx Ltd. Efficient power amplifier
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US7888907B2 (en) 2007-10-30 2011-02-15 Bose Corporation Controlled charging and use of power source
US9036835B2 (en) * 2007-11-05 2015-05-19 Aliphcom Combining an audio power amplifier and a power converter in a single device
US7852150B1 (en) * 2007-12-20 2010-12-14 The Tc Group A/S Switching amplifier driven by a controlled power supply
GB2456005B (en) * 2007-12-28 2013-03-06 Wolfson Ltd Amplifier circuit
US8576589B2 (en) 2008-01-30 2013-11-05 Cirrus Logic, Inc. Switch state controller with a sense current generated operating voltage
US8022683B2 (en) 2008-01-30 2011-09-20 Cirrus Logic, Inc. Powering a power supply integrated circuit with sense current
DE102008030576B3 (en) * 2008-06-27 2009-12-03 Texas Instruments Deutschland Gmbh High efficient precision amplifier e.g. XTR300, for controlling load during industrial driver application, has switches connecting positive or negative supply rail of linear amplifier stage with supply unit based on signal polarity
US8995691B2 (en) 2008-07-14 2015-03-31 Audera Acoustics Inc. Audio amplifier
US8212491B2 (en) 2008-07-25 2012-07-03 Cirrus Logic, Inc. Switching power converter control with triac-based leading edge dimmer compatibility
US8344707B2 (en) 2008-07-25 2013-01-01 Cirrus Logic, Inc. Current sensing in a switching power converter
US8487546B2 (en) 2008-08-29 2013-07-16 Cirrus Logic, Inc. LED lighting system with accurate current control
US8179110B2 (en) 2008-09-30 2012-05-15 Cirrus Logic Inc. Adjustable constant current source with continuous conduction mode (“CCM”) and discontinuous conduction mode (“DCM”) operation
US9634577B2 (en) * 2008-11-11 2017-04-25 Massachusetts Institute Of Technology Inverter/power amplifier with capacitive energy transfer and related techniques
US8288954B2 (en) 2008-12-07 2012-10-16 Cirrus Logic, Inc. Primary-side based control of secondary-side current for a transformer
US8362707B2 (en) 2008-12-12 2013-01-29 Cirrus Logic, Inc. Light emitting diode based lighting system with time division ambient light feedback response
US8299722B2 (en) 2008-12-12 2012-10-30 Cirrus Logic, Inc. Time division light output sensing and brightness adjustment for different spectra of light emitting diodes
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US9136795B2 (en) * 2011-05-19 2015-09-15 Skyworks Solutions, Inc. Variable switched DC-to-DC voltage converter
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US8841894B1 (en) 2011-12-16 2014-09-23 Cirrus Logic, Inc. Pulse-width modulated (PWM) audio power amplifier with output transition slope control
US9484860B2 (en) * 2013-03-12 2016-11-01 Thx Ltd. Tracking power supply with increased boost capability
US9209762B1 (en) 2013-04-01 2015-12-08 Cirrus Logic, Inc. Switching power amplifier with rate-controlled power supply voltage transitions
US9912233B2 (en) 2014-09-30 2018-03-06 Skyworks Solutions, Inc. Variable switched DC-to-DC voltage converter using pulse skipping mode and frequency modulation
US9559642B2 (en) 2015-01-02 2017-01-31 Logitech Europe, S.A. Audio delivery system having an improved efficiency and extended operation time between recharges or battery replacements
TWI783210B (en) * 2020-02-06 2022-11-11 瑞昱半導體股份有限公司 Audio codec circuit

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Also Published As

Publication number Publication date
WO2002015386A3 (en) 2003-01-09
US6373340B1 (en) 2002-04-16
WO2002015386A2 (en) 2002-02-21
IL138842A0 (en) 2001-10-31

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