CN104272589B - 具有可调环路滤波器特性的d类音频放大器 - Google Patents

具有可调环路滤波器特性的d类音频放大器 Download PDF

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Publication number
CN104272589B
CN104272589B CN201380022679.8A CN201380022679A CN104272589B CN 104272589 B CN104272589 B CN 104272589B CN 201380022679 A CN201380022679 A CN 201380022679A CN 104272589 B CN104272589 B CN 104272589B
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signal
audio
amplifier according
frequency amplifier
level
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CN104272589A (zh
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米克尔·霍耶尔比
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Cirrus Logic International Semiconductor Ltd
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Merus ApS
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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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/4837—Flying capacitor 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
    • H03F1/02—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
CN201380022679.8A 2012-04-30 2013-04-24 具有可调环路滤波器特性的d类音频放大器 Active CN104272589B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261640565P 2012-04-30 2012-04-30
US61/640,565 2012-04-30
PCT/EP2013/058450 WO2013164229A1 (en) 2012-04-30 2013-04-24 Class d audio amplifier with adjustable loop filter characteristics

Publications (2)

Publication Number Publication Date
CN104272589A CN104272589A (zh) 2015-01-07
CN104272589B true CN104272589B (zh) 2017-10-24

Family

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Family Applications (1)

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CN201380022679.8A Active CN104272589B (zh) 2012-04-30 2013-04-24 具有可调环路滤波器特性的d类音频放大器

Country Status (7)

Country Link
US (1) US9564862B2 (https=)
EP (1) EP2845314B1 (https=)
JP (1) JP6325526B2 (https=)
KR (1) KR102068105B1 (https=)
CN (1) CN104272589B (https=)
DK (1) DK2845314T3 (https=)
WO (1) WO2013164229A1 (https=)

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Also Published As

Publication number Publication date
CN104272589A (zh) 2015-01-07
KR20150016301A (ko) 2015-02-11
DK2845314T3 (en) 2016-10-03
WO2013164229A1 (en) 2013-11-07
KR102068105B1 (ko) 2020-01-20
EP2845314A1 (en) 2015-03-11
JP2015515841A (ja) 2015-05-28
US20150288335A1 (en) 2015-10-08
EP2845314B1 (en) 2016-06-29
US9564862B2 (en) 2017-02-07
JP6325526B2 (ja) 2018-05-16

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