GB2636498A - Driver circuitry and operation - Google Patents

Driver circuitry and operation Download PDF

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Publication number
GB2636498A
GB2636498A GB2418671.0A GB202418671A GB2636498A GB 2636498 A GB2636498 A GB 2636498A GB 202418671 A GB202418671 A GB 202418671A GB 2636498 A GB2636498 A GB 2636498A
Authority
GB
United Kingdom
Prior art keywords
driver
switching
duty cycle
modes
controller
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
GB2418671.0A
Other versions
GB2636498B (en
GB202418671D0 (en
Inventor
Thomsen Axel
King Eric
Doy Anthony
Hoff Thomas
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 US17/314,890 external-priority patent/US11684950B2/en
Priority claimed from US17/314,917 external-priority patent/US11277129B2/en
Priority claimed from US17/343,479 external-priority patent/US11606642B2/en
Application filed by Cirrus Logic International Semiconductor Ltd filed Critical Cirrus Logic International Semiconductor Ltd
Publication of GB202418671D0 publication Critical patent/GB202418671D0/en
Publication of GB2636498A publication Critical patent/GB2636498A/en
Application granted granted Critical
Publication of GB2636498B publication Critical patent/GB2636498B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from AC input or output
    • 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
    • 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
    • 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/539—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
    • H02M7/5395—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)
  • Electronic Switches (AREA)

Abstract

A driver circuit 1200 has a first switching driver 401-1 and a second switching driver 401-2 for driving a transducer 104 in a bridge-tied-load (BTL) configuration, each switching driver having a respective output stage for controllably switching a respective driver output node between high and low switching voltages with a controlled duty cycle. Each switching driver is operable in a plurality of different driver modes, wherein the switching voltages are different in said different driver modes (e.g. Table 1). A controller 1201 controls the driver mode of operation and the duty cycle of the switching drivers based on the input signal. The controller is configured to control the duty cycles of the first and second switching drivers within defined minimum and maximum limits of duty cycles, and to transition between driver modes of operation when the duty cycle of one of the switching drivers reaches a duty cycle limit (Fig.13, 1301, 1302). The controller implements the transition by changing the driver mode of one switching driver and varying its duty cycle to the other duty cycle limit, and by maintaining the driver mode of the other switching driver and varying its duty cycle to maintain the differential output signal magnitude.
GB2418671.0A 2020-08-13 2021-08-10 Driver circuitry and operation Active GB2636498B (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US202063065051P 2020-08-13 2020-08-13
US202163146093P 2021-02-05 2021-02-05
US17/314,890 US11684950B2 (en) 2020-08-13 2021-05-07 Driver circuitry and operation
US17/314,917 US11277129B2 (en) 2020-08-13 2021-05-07 Driver circuitry and operation
US17/343,479 US11606642B2 (en) 2020-08-13 2021-06-09 Driver circuits
US17/349,536 US11368151B2 (en) 2020-08-13 2021-06-16 Driver circuitry and operation
GB2109569.0A GB2598038B (en) 2020-08-13 2021-07-02 Driver circuits
GB2300338.7A GB2612473B (en) 2020-08-13 2021-08-10 Driver circuitry and operation

Publications (3)

Publication Number Publication Date
GB202418671D0 GB202418671D0 (en) 2025-02-05
GB2636498A true GB2636498A (en) 2025-06-18
GB2636498B GB2636498B (en) 2025-10-22

Family

ID=77274519

Family Applications (4)

Application Number Title Priority Date Filing Date
GB2109569.0A Active GB2598038B (en) 2020-08-13 2021-07-02 Driver circuits
GB2418671.0A Active GB2636498B (en) 2020-08-13 2021-08-10 Driver circuitry and operation
GB2418672.8A Active GB2636930B (en) 2020-08-13 2021-08-10 Driver circuitry and operation
GB2300338.7A Active GB2612473B (en) 2020-08-13 2021-08-10 Driver circuitry and operation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2109569.0A Active GB2598038B (en) 2020-08-13 2021-07-02 Driver circuits

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB2418672.8A Active GB2636930B (en) 2020-08-13 2021-08-10 Driver circuitry and operation
GB2300338.7A Active GB2612473B (en) 2020-08-13 2021-08-10 Driver circuitry and operation

Country Status (3)

Country Link
CN (2) CN116097560A (en)
GB (4) GB2598038B (en)
WO (2) WO2022034288A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130099859A1 (en) * 2011-03-01 2013-04-25 Maxim Integrated Products, Inc. Multilevel Class-D Amplifier
US20130223651A1 (en) * 2010-10-27 2013-08-29 Merus Audio Aps Audio amplifier using multi-level pulse width modulation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9059668B2 (en) * 2012-08-23 2015-06-16 Blackberry Limited Switching mode amplifier operation
CN205725503U (en) * 2016-05-10 2016-11-23 浙江大学 A Master-Slave Hybrid Cascaded Multilevel Converter
WO2018013183A1 (en) * 2016-07-15 2018-01-18 Linear Technology Corporation Balancing charge pump circuits
EP3402070B1 (en) * 2017-05-11 2020-02-12 Infineon Technologies Austria AG Class d audio amplifier with adjustable gate drive

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130223651A1 (en) * 2010-10-27 2013-08-29 Merus Audio Aps Audio amplifier using multi-level pulse width modulation
US20130099859A1 (en) * 2011-03-01 2013-04-25 Maxim Integrated Products, Inc. Multilevel Class-D Amplifier

Also Published As

Publication number Publication date
GB2612473A (en) 2023-05-03
GB2636498B (en) 2025-10-22
GB2636930B (en) 2025-09-24
GB202109569D0 (en) 2021-08-18
GB2598038A (en) 2022-02-16
GB2612473B (en) 2025-05-14
GB202418671D0 (en) 2025-02-05
GB2598038B (en) 2022-12-07
GB2636930A (en) 2025-07-02
WO2022034306A1 (en) 2022-02-17
GB202418672D0 (en) 2025-02-05
CN116097559A (en) 2023-05-09
WO2022034288A1 (en) 2022-02-17
GB2636930A8 (en) 2025-07-16
CN116097560A (en) 2023-05-09

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