JP5430438B2 - デジタルアンプ - Google Patents

デジタルアンプ Download PDF

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Publication number
JP5430438B2
JP5430438B2 JP2010033362A JP2010033362A JP5430438B2 JP 5430438 B2 JP5430438 B2 JP 5430438B2 JP 2010033362 A JP2010033362 A JP 2010033362A JP 2010033362 A JP2010033362 A JP 2010033362A JP 5430438 B2 JP5430438 B2 JP 5430438B2
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JP
Japan
Prior art keywords
output
circuit
signal
unit
current
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
JP2010033362A
Other languages
English (en)
Japanese (ja)
Other versions
JP2011171967A5 (enExample
JP2011171967A (ja
Inventor
宙 菅原
寿幸 佐々木
茂樹 庭山
佳樹 前田
智臣 ▲高▼野
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.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co 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
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP2010033362A priority Critical patent/JP5430438B2/ja
Priority to CN201180010215.6A priority patent/CN102859868B/zh
Priority to PCT/JP2011/000648 priority patent/WO2011102092A1/ja
Publication of JP2011171967A publication Critical patent/JP2011171967A/ja
Publication of JP2011171967A5 publication Critical patent/JP2011171967A5/ja
Application granted granted Critical
Publication of JP5430438B2 publication Critical patent/JP5430438B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H03F2200/351—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
JP2010033362A 2010-02-18 2010-02-18 デジタルアンプ Active JP5430438B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2010033362A JP5430438B2 (ja) 2010-02-18 2010-02-18 デジタルアンプ
CN201180010215.6A CN102859868B (zh) 2010-02-18 2011-02-04 数字放大器
PCT/JP2011/000648 WO2011102092A1 (ja) 2010-02-18 2011-02-04 デジタルアンプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010033362A JP5430438B2 (ja) 2010-02-18 2010-02-18 デジタルアンプ

Publications (3)

Publication Number Publication Date
JP2011171967A JP2011171967A (ja) 2011-09-01
JP2011171967A5 JP2011171967A5 (enExample) 2013-02-07
JP5430438B2 true JP5430438B2 (ja) 2014-02-26

Family

ID=44482700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010033362A Active JP5430438B2 (ja) 2010-02-18 2010-02-18 デジタルアンプ

Country Status (3)

Country Link
JP (1) JP5430438B2 (enExample)
CN (1) CN102859868B (enExample)
WO (1) WO2011102092A1 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103296982B (zh) * 2012-02-27 2016-10-05 无锡华润矽科微电子有限公司 D类音频功率放大电路中实现自适应功能的电路结构
JP5638597B2 (ja) * 2012-12-27 2014-12-10 株式会社東芝 デジタル振幅変調装置及びデジタル振幅変調制御方法
GB2510396A (en) * 2013-02-01 2014-08-06 Nujira Ltd Controlling resonance in an envelope tracking power supply
US9647612B2 (en) 2014-09-30 2017-05-09 JVC Kenwood Corporation Power amplifying apparatus and power amplifying method
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
KR102081971B1 (ko) * 2018-11-13 2020-02-26 한국항공우주연구원 음향시험용 가진소스 보호 장치 및 방법
KR101992293B1 (ko) * 2019-01-02 2019-06-26 (주)하이텍영상 실시간 검출이 가능한 디지털앰프장치 및 이를 이용한 자동전환 방송시스템
KR102214729B1 (ko) * 2019-01-11 2021-02-10 박창길 비상 방송 제어 시스템
TWI724980B (zh) * 2020-10-14 2021-04-11 立積電子股份有限公司 放大電路

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07146722A (ja) * 1993-10-01 1995-06-06 Fuji Electric Co Ltd トランジスタ用過電流保護装置
JP3774385B2 (ja) * 2001-07-26 2006-05-10 株式会社デノン 増幅器の保護回路
JP2004254021A (ja) * 2003-02-19 2004-09-09 Rohm Co Ltd 増幅器の保護方法及び、増幅器を備えた半導体装置
JP2005203968A (ja) * 2004-01-14 2005-07-28 Denon Ltd デジタルアンプの保護装置
JP4792308B2 (ja) * 2006-03-22 2011-10-12 ティーオーエー株式会社 デジタルアンプの保護装置
JP4929208B2 (ja) * 2008-02-29 2012-05-09 三菱重工業株式会社 磁気軸受装置
JP2009260834A (ja) * 2008-04-18 2009-11-05 Sony Corp 過電流保護回路及びｄ級アンプ

Also Published As

Publication number Publication date
CN102859868B (zh) 2015-05-20
JP2011171967A (ja) 2011-09-01
WO2011102092A1 (ja) 2011-08-25
CN102859868A (zh) 2013-01-02

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