DK3721555T3 - Forstærker med et filter af mindst anden orden i kontrolsløjfen - Google Patents

Forstærker med et filter af mindst anden orden i kontrolsløjfen Download PDF

Info

Publication number
DK3721555T3
DK3721555T3 DK18740859.6T DK18740859T DK3721555T3 DK 3721555 T3 DK3721555 T3 DK 3721555T3 DK 18740859 T DK18740859 T DK 18740859T DK 3721555 T3 DK3721555 T3 DK 3721555T3
Authority
DK
Denmark
Prior art keywords
amplifier
filter
order
control loop
loop
Prior art date
Application number
DK18740859.6T
Other languages
English (en)
Inventor
Bruno Putzeys
Lars Risbo
Original Assignee
Purifi Aps
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 Purifi Aps filed Critical Purifi Aps
Application granted granted Critical
Publication of DK3721555T3 publication Critical patent/DK3721555T3/da

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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • 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
    • H03F2200/129—Indexing scheme relating to amplifiers there being a feedback over the complete amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/168—Two amplifying stages are coupled by means of a filter circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/462—Indexing scheme relating to amplifiers the current being sensed
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/66—Clipping circuitry being present in an amplifier, i.e. the shape of the signal being modified
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/78—A comparator being used in a controlling circuit of an amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
DK18740859.6T 2017-12-07 2018-07-20 Forstærker med et filter af mindst anden orden i kontrolsløjfen DK3721555T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17205939 2017-12-07
PCT/EP2018/069758 WO2019110153A1 (en) 2017-12-07 2018-07-20 An amplifier with an at least second order filter in the control loop

Publications (1)

Publication Number Publication Date
DK3721555T3 true DK3721555T3 (da) 2023-11-20

Family

ID=60627562

Family Applications (1)

Application Number Title Priority Date Filing Date
DK18740859.6T DK3721555T3 (da) 2017-12-07 2018-07-20 Forstærker med et filter af mindst anden orden i kontrolsløjfen

Country Status (8)

Country Link
US (1) US11258411B2 (da)
EP (1) EP3721555B1 (da)
JP (1) JP2021506198A (da)
KR (1) KR20200096590A (da)
CN (1) CN111466080B (da)
DK (1) DK3721555T3 (da)
ES (1) ES2963491T3 (da)
WO (1) WO2019110153A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3758223A1 (en) * 2019-06-25 2020-12-30 Oxford Instruments Technologies Oy A preamplifier circuit
US11424724B2 (en) * 2019-12-31 2022-08-23 Taiwan Semiconductor Manufacturing Company, Ltd. Ampilfier with VCO-based ADC

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US20070096812A1 (en) 2004-03-26 2007-05-03 Lee Wai L Switching amplifier with output filter feedback
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Also Published As

Publication number Publication date
CN111466080A (zh) 2020-07-28
ES2963491T3 (es) 2024-03-27
WO2019110153A1 (en) 2019-06-13
CN111466080B (zh) 2024-05-28
KR20200096590A (ko) 2020-08-12
US11258411B2 (en) 2022-02-22
US20200382084A1 (en) 2020-12-03
JP2021506198A (ja) 2021-02-18
EP3721555B1 (en) 2023-09-06
EP3721555A1 (en) 2020-10-14

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