GB2562969B - Prevention of switching discontinuity in a hybrid switched mode amplifier - Google Patents

Prevention of switching discontinuity in a hybrid switched mode amplifier Download PDF

Info

Publication number
GB2562969B
GB2562969B GB1813838.8A GB201813838A GB2562969B GB 2562969 B GB2562969 B GB 2562969B GB 201813838 A GB201813838 A GB 201813838A GB 2562969 B GB2562969 B GB 2562969B
Authority
GB
United Kingdom
Prior art keywords
prevention
switched mode
mode amplifier
hybrid switched
switching discontinuity
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.)
Active
Application number
GB1813838.8A
Other versions
GB201813838D0 (en
GB2562969A (en
Inventor
J King Eric
He Zhaohui
Maru Siddharth
Laurence Melanson John
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 International Semiconductor Ltd
Original Assignee
Cirrus Logic International Semiconductor 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
Priority claimed from US15/282,790 external-priority patent/US9929664B2/en
Application filed by Cirrus Logic International Semiconductor Ltd filed Critical Cirrus Logic International Semiconductor Ltd
Publication of GB201813838D0 publication Critical patent/GB201813838D0/en
Publication of GB2562969A publication Critical patent/GB2562969A/en
Application granted granted Critical
Publication of GB2562969B publication Critical patent/GB2562969B/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
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H03F1/0216—Continuous control
    • 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
    • H03F1/0216—Continuous control
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • H03F1/0227—Continuous control by using a signal derived from the input signal using supply 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • 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
    • H03F3/185—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only 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
    • H03F3/20—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
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/2932—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage, current or power
    • 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
    • H03F2200/153—Feedback used to stabilise the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/432—Two or more amplifiers of different type are coupled in parallel at the input or output, e.g. a class D and a linear amplifier, a class B and a class A amplifier
GB1813838.8A 2016-03-16 2017-03-06 Prevention of switching discontinuity in a hybrid switched mode amplifier Active GB2562969B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201662309068P 2016-03-16 2016-03-16
US15/282,790 US9929664B2 (en) 2016-03-16 2016-09-30 Prevention of switching discontinuity in a hybrid switched mode amplifier
PCT/US2017/020927 WO2017160522A1 (en) 2016-03-16 2017-03-06 Prevention of switching discontinuity in a hybrid switched mode amplifier

Publications (3)

Publication Number Publication Date
GB201813838D0 GB201813838D0 (en) 2018-10-10
GB2562969A GB2562969A (en) 2018-11-28
GB2562969B true GB2562969B (en) 2022-06-22

Family

ID=81753150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1813838.8A Active GB2562969B (en) 2016-03-16 2017-03-06 Prevention of switching discontinuity in a hybrid switched mode amplifier

Country Status (1)

Country Link
GB (1) GB2562969B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030222713A1 (en) * 2002-05-29 2003-12-04 Skinner David L Modulation scheme for switching amplifiers to reduce filtering requirements and crossover distortion
US20090027247A1 (en) * 2007-07-25 2009-01-29 Renesas Technology Corp. A/d converter and semiconductor device
US20120306575A1 (en) * 2011-06-06 2012-12-06 Qualcomm Incorporated Switched-capacitor dc blocking amplifier
US20140028395A1 (en) * 2012-07-27 2014-01-30 Hong Kong Applied Science & Technology Research Institute Company Limited Op-Amp Sharing by Swapping Trans-Conductance Cells
US20160056707A1 (en) * 2014-08-25 2016-02-25 Linear Technology Corporation Notch filter for ripple reduction
GB2546576A (en) * 2016-01-18 2017-07-26 Cirrus Logic Int Semiconductor Ltd Hybrid switched mode amplifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030222713A1 (en) * 2002-05-29 2003-12-04 Skinner David L Modulation scheme for switching amplifiers to reduce filtering requirements and crossover distortion
US20090027247A1 (en) * 2007-07-25 2009-01-29 Renesas Technology Corp. A/d converter and semiconductor device
US20120306575A1 (en) * 2011-06-06 2012-12-06 Qualcomm Incorporated Switched-capacitor dc blocking amplifier
US20140028395A1 (en) * 2012-07-27 2014-01-30 Hong Kong Applied Science & Technology Research Institute Company Limited Op-Amp Sharing by Swapping Trans-Conductance Cells
US20160056707A1 (en) * 2014-08-25 2016-02-25 Linear Technology Corporation Notch filter for ripple reduction
GB2546576A (en) * 2016-01-18 2017-07-26 Cirrus Logic Int Semiconductor Ltd Hybrid switched mode amplifier

Also Published As

Publication number Publication date
GB201813838D0 (en) 2018-10-10
GB2562969A (en) 2018-11-28

Similar Documents

Publication Publication Date Title
SG10201609782QA (en) Digitally Controlled Zero Voltage Switching
GB201613782D0 (en) Switched mode amplifier
EP3172581A4 (en) Circuit architecture for mode switch
EP3112131B8 (en) Welding thermoplastic structures
GB2563756B (en) Hybrid switched mode amplifier
EP3101754A4 (en) Charging mode switching circuit and method
EP3456117A4 (en) Hybrid class b fd-mimo
EP3186932A4 (en) Path selection in hybrid networks
GB2548443B (en) Removal of switching discontinuity in a hybrid switched mode amplifier
EP3072229A4 (en) Soft switching inverter
EP3203281A4 (en) Mode multiplexer-demultiplexer and switching node
GB201617096D0 (en) Hybrid switched mode amplifier
EP3394968A4 (en) Digitally controlled zero current switching
EP3370436A4 (en) Hybrid speaker
EP3114136A4 (en) Pharmaceutically relevant aromatic-cationic peptides
PL3516409T3 (en) Estimation of arc location in three dimensions
GB201607622D0 (en) Switching converter
EP3125262A4 (en) Hybrid switching device
EP3387660A4 (en) Improved magnetic switch
EP3404783A4 (en) Switching device
EP3343084A4 (en) Waterproof quick coupler
EP3451475A4 (en) Switch
EP3288056A4 (en) Switching device
GB201420438D0 (en) Switching arrangement
GB2565078B (en) Hybrid switching device and hybrid actuator incorporating same