JP5386665B2 - アンプ故障検出回路 - Google Patents

アンプ故障検出回路 Download PDF

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Publication number
JP5386665B2
JP5386665B2 JP2005370660A JP2005370660A JP5386665B2 JP 5386665 B2 JP5386665 B2 JP 5386665B2 JP 2005370660 A JP2005370660 A JP 2005370660A JP 2005370660 A JP2005370660 A JP 2005370660A JP 5386665 B2 JP5386665 B2 JP 5386665B2
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JP
Japan
Prior art keywords
signal
output
amplifier
digital error
error signal
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Expired - Fee Related
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JP2005370660A
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English (en)
Japanese (ja)
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JP2006187002A5 (enExample
JP2006187002A (ja
Inventor
ワッツ ロバート
Original Assignee
ケンブリッジ シリコン ラジオ リミテッド
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Publication of JP2006187002A publication Critical patent/JP2006187002A/ja
Publication of JP2006187002A5 publication Critical patent/JP2006187002A5/ja
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    • 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
    • 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • 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
    • H03F3/2175—Class D power amplifiers; Switching amplifiers using analogue-digital or digital-analogue conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/426—Indexing scheme relating to amplifiers the amplifier comprising circuitry for protection against overload

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
JP2005370660A 2004-12-23 2005-12-22 アンプ故障検出回路 Expired - Fee Related JP5386665B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0428211A GB2421648B (en) 2004-12-23 2004-12-23 Amplifier fault detection circuit
GB0428211.7 2004-12-23

Publications (3)

Publication Number Publication Date
JP2006187002A JP2006187002A (ja) 2006-07-13
JP2006187002A5 JP2006187002A5 (enExample) 2009-02-12
JP5386665B2 true JP5386665B2 (ja) 2014-01-15

Family

ID=34113149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005370660A Expired - Fee Related JP5386665B2 (ja) 2004-12-23 2005-12-22 アンプ故障検出回路

Country Status (3)

Country Link
US (1) US7484139B2 (enExample)
JP (1) JP5386665B2 (enExample)
GB (1) GB2421648B (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101379698B (zh) * 2006-02-07 2012-04-18 D2音频有限公司 用于提高数字放大器中的反馈和/或前馈子系统的稳定性的系统和方法
US8456169B2 (en) * 2010-01-13 2013-06-04 International Business Machines Corporation High speed measurement of random variation/yield in integrated circuit device testing
KR101041714B1 (ko) * 2011-01-25 2011-06-14 한국수력원자력 주식회사 프로그래머블 논리 소자에 기반한 독립형 제어 모듈
WO2012158938A1 (en) * 2011-05-18 2012-11-22 Petra Solar, Inc. Method and system for managing feedback signal acquisition in a power controller
GB2550243B (en) 2014-08-29 2018-03-21 Cirrus Logic Int Semiconductor Ltd Class D amplifier circuit
US9306508B1 (en) * 2015-02-19 2016-04-05 King Fahd University Of Petroleum And Minerals Reconfigurable intergrator/differentiator circuit based on current follower
US10636285B2 (en) * 2017-06-14 2020-04-28 Allegro Microsystems, Llc Sensor integrated circuits and methods for safety critical applications
US10692362B2 (en) * 2017-06-14 2020-06-23 Allegro Microsystems, Llc Systems and methods for comparing signal channels having different common mode transient immunity
US10380879B2 (en) * 2017-06-14 2019-08-13 Allegro Microsystems, Llc Sensor integrated circuits and methods for safety critical applications
JP7199834B2 (ja) * 2018-05-24 2023-01-06 ラピスセミコンダクタ株式会社 半導体装置
JP7173800B2 (ja) * 2018-09-12 2022-11-16 ラピスセミコンダクタ株式会社 半導体装置および音出力装置
JP7189033B2 (ja) * 2019-01-23 2022-12-13 ラピスセミコンダクタ株式会社 半導体装置及び音出力装置
KR102665443B1 (ko) * 2019-05-30 2024-05-09 삼성전자주식회사 반도체 장치
US11750992B2 (en) * 2020-09-17 2023-09-05 Texas Instruments Incorporated Integrated circuit with switching amplifier output fault detection
US12203822B2 (en) 2022-04-14 2025-01-21 Allegro Microsystems, Llc Heterogeneous magnetic and inductive sensors
US11719769B1 (en) 2022-06-14 2023-08-08 Allegro Microsystems, Llc Method and apparatus for sensor signal path diagnostics
KR102785189B1 (ko) * 2022-11-29 2025-03-21 주식회사 현대케피코 일체형 모터 제어기의 모터 사양식별 및 고장진단 장치와 방법
US12455178B2 (en) 2023-12-22 2025-10-28 Allegro Microsystems, Llc Inductive linear stroke sensor using dual tracks with different periodicity

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6128208A (ja) * 1984-07-18 1986-02-07 Iwatsu Electric Co Ltd レベル補償回路
JPH0637653A (ja) * 1992-07-15 1994-02-10 Nec Corp 送信機
US5974089A (en) 1997-07-22 1999-10-26 Tripath Technology, Inc. Method and apparatus for performance improvement by qualifying pulses in an oversampled noise-shaping signal processor
EP0968565A2 (en) 1998-01-22 2000-01-05 Koninklijke Philips Electronics N.V. Pwm amplifier
US20030122605A1 (en) * 1999-08-15 2003-07-03 Ulrick John W. Current limiting circuit
JP4223194B2 (ja) * 2001-01-31 2009-02-12 富士通株式会社 故障判定機能を備えた非線形歪補償送信装置
US6683494B2 (en) * 2001-03-26 2004-01-27 Harman International Industries, Incorporated Digital signal processor enhanced pulse width modulation amplifier
DE60234724D1 (de) * 2002-05-31 2010-01-21 Fujitsu Ltd Verzerrungskompensator
US6646501B1 (en) * 2002-06-25 2003-11-11 Nortel Networks Limited Power amplifier configuration
DE602004013940D1 (de) * 2003-03-21 2008-07-03 D2Audio Corp Systeme und verfahren zum schutz von audioverstärkerschaltungen
KR100498497B1 (ko) * 2003-05-10 2005-07-01 삼성전자주식회사 이상 상태에서 정상 상태로의 복귀 시에 발생되는 과도응답 현상을 방지하는 ｄ급 파워 증폭기 및 그 방법
US6987417B2 (en) * 2003-06-24 2006-01-17 Northrop Grumman Corpoation Polar and linear amplifier system
US7157969B2 (en) 2004-02-27 2007-01-02 Bhc Consulting Pty., Ltd. Low distortion class D amplifier using a controlled delay
GB2429351B (en) 2005-08-17 2009-07-08 Wolfson Microelectronics Plc Feedback controller for PWM amplifier

Also Published As

Publication number Publication date
GB2421648A (en) 2006-06-28
US20060195720A1 (en) 2006-08-31
US7484139B2 (en) 2009-01-27
GB0428211D0 (en) 2005-01-26
GB2421648B (en) 2009-01-07
JP2006187002A (ja) 2006-07-13

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