GB201518256D0 - Power stage with switched mode amplifier and linear amplifier - Google Patents

Power stage with switched mode amplifier and linear amplifier

Info

Publication number
GB201518256D0
GB201518256D0 GBGB1518256.1A GB201518256A GB201518256D0 GB 201518256 D0 GB201518256 D0 GB 201518256D0 GB 201518256 A GB201518256 A GB 201518256A GB 201518256 D0 GB201518256 D0 GB 201518256D0
Authority
GB
United Kingdom
Prior art keywords
amplifier
power stage
switched mode
linear
linear 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.)
Granted
Application number
GBGB1518256.1A
Other versions
GB2533994B (en
GB2533994A (en
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.)
Cirrus Logic Inc
Original Assignee
Cirrus Logic Inc
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
Priority claimed from US14/840,894 external-priority patent/US9628033B2/en
Application filed by Cirrus Logic Inc filed Critical Cirrus Logic Inc
Priority to GB1819889.5A priority Critical patent/GB2566193B/en
Publication of GB201518256D0 publication Critical patent/GB201518256D0/en
Publication of GB2533994A publication Critical patent/GB2533994A/en
Application granted granted Critical
Publication of GB2533994B publication Critical patent/GB2533994B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • H03F1/0277—Selecting one or more amplifiers from a plurality of 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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
GB1518256.1A 2014-10-29 2015-10-15 Power stage with switched mode amplifier and linear amplifier Active GB2533994B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1819889.5A GB2566193B (en) 2014-10-29 2015-10-15 Power stage with switched mode amplifier and linear amplifier

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201462072059P 2014-10-29 2014-10-29
US201462090142P 2014-12-10 2014-12-10
US14/840,894 US9628033B2 (en) 2014-10-29 2015-08-31 Power stage with switched mode amplifier and linear amplifier

Publications (3)

Publication Number Publication Date
GB201518256D0 true GB201518256D0 (en) 2015-12-02
GB2533994A GB2533994A (en) 2016-07-13
GB2533994B GB2533994B (en) 2019-01-23

Family

ID=54365451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1518256.1A Active GB2533994B (en) 2014-10-29 2015-10-15 Power stage with switched mode amplifier and linear amplifier

Country Status (1)

Country Link
GB (1) GB2533994B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015119961A1 (en) 2014-02-04 2015-08-13 Cirrus Logic, Inc. Differential output mode for a multi-mode power converter
WO2015171931A1 (en) 2014-05-08 2015-11-12 Cirrus Logic, Inc. System with multiple signal loops and switched mode converter
US9628033B2 (en) 2014-10-29 2017-04-18 Cirrus Logic, Inc. Power stage with switched mode amplifier and linear amplifier

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077539A (en) * 1990-12-26 1991-12-31 Apogee Technology, Inc. Switching amplifier
US7499557B1 (en) * 1999-09-20 2009-03-03 Realtek Semiconductor Corporation Driving method of speaker and the driving circuit thereof
US8482346B2 (en) * 2010-06-14 2013-07-09 Harman International Industries, Incorporated High efficiency balanced output amplifier system
US8638168B1 (en) * 2011-07-14 2014-01-28 Marvell International Ltd. Digital power amplifier
WO2015171931A1 (en) * 2014-05-08 2015-11-12 Cirrus Logic, Inc. System with multiple signal loops and switched mode converter

Also Published As

Publication number Publication date
GB2533994B (en) 2019-01-23
GB2533994A (en) 2016-07-13

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