GB2598995B - Common-mode insensitive current-sensing topology in full-bridge driver - Google Patents

Common-mode insensitive current-sensing topology in full-bridge driver Download PDF

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Publication number
GB2598995B
GB2598995B GB2110933.5A GB202110933A GB2598995B GB 2598995 B GB2598995 B GB 2598995B GB 202110933 A GB202110933 A GB 202110933A GB 2598995 B GB2598995 B GB 2598995B
Authority
GB
United Kingdom
Prior art keywords
full
common
bridge driver
insensitive current
sensing topology
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
GB2110933.5A
Other versions
GB202110933D0 (en
GB2598995A (en
Inventor
Zanbaghi Ramin
J Peterson Cory
Ilango Anand
Kimball Eric
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 US17/003,564 external-priority patent/US11290071B2/en
Application filed by Cirrus Logic International Semiconductor Ltd filed Critical Cirrus Logic International Semiconductor Ltd
Publication of GB202110933D0 publication Critical patent/GB202110933D0/en
Publication of GB2598995A publication Critical patent/GB2598995A/en
Application granted granted Critical
Publication of GB2598995B publication Critical patent/GB2598995B/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
    • H03F3/2173—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
    • H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/187—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
    • 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
    • H03F2200/33—Bridge form coupled amplifiers; H-form coupled amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45151—At least one resistor being added at the input of a dif amp
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45528—Indexing scheme relating to differential amplifiers the FBC comprising one or more passive resistors and being coupled between the LC and the IC
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
GB2110933.5A 2020-08-26 2021-07-29 Common-mode insensitive current-sensing topology in full-bridge driver Active GB2598995B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17/003,564 US11290071B2 (en) 2020-05-01 2020-08-26 Common-mode insensitive current-sensing topology in full-bridge driver

Publications (3)

Publication Number Publication Date
GB202110933D0 GB202110933D0 (en) 2021-09-15
GB2598995A GB2598995A (en) 2022-03-23
GB2598995B true GB2598995B (en) 2022-12-28

Family

ID=77651159

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2110933.5A Active GB2598995B (en) 2020-08-26 2021-07-29 Common-mode insensitive current-sensing topology in full-bridge driver

Country Status (1)

Country Link
GB (1) GB2598995B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2284992A1 (en) * 2009-07-15 2011-02-16 Nxp B.V. Current sensing
US20130223649A1 (en) * 2012-02-28 2013-08-29 Qualcomm Incorporated Load current sensing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2284992A1 (en) * 2009-07-15 2011-02-16 Nxp B.V. Current sensing
US20130223649A1 (en) * 2012-02-28 2013-08-29 Qualcomm Incorporated Load current sensing

Also Published As

Publication number Publication date
GB202110933D0 (en) 2021-09-15
GB2598995A (en) 2022-03-23

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