CN1866728B - 数字放大器、脉冲宽度调制器以及减小其突发噪声的方法 - Google Patents
数字放大器、脉冲宽度调制器以及减小其突发噪声的方法 Download PDFInfo
- Publication number
- CN1866728B CN1866728B CN2005100995966A CN200510099596A CN1866728B CN 1866728 B CN1866728 B CN 1866728B CN 2005100995966 A CN2005100995966 A CN 2005100995966A CN 200510099596 A CN200510099596 A CN 200510099596A CN 1866728 B CN1866728 B CN 1866728B
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- Prior art keywords
- pulse
- pwm
- width modulator
- signal
- width
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- Expired - Fee Related
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- 238000000034 method Methods 0.000 title claims description 25
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000005236 sound signal Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- 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
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/342—Pulse code 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
Abstract
Description
寄存器名称 | 宽度(ns) | 相位 | 寄存器名称 | 宽度(ns) | 相位 |
PWM加法寄存器0 | 640 | 0 | PWM减法寄存器0 | 640 | 0 |
PWM加法寄存器1 | 1320 | 1 | PWM减法寄存器1 | 1320 | 1 |
PWM加法寄存器2 | 975 | 0 | PWM减法寄存器2 | 655 | 0 |
PWM加法寄存器3 | 920 | 1 | PWM减法寄存器3 | 320 | 1 |
PWM加法寄存器4 | 1155 | 0 | PWM减法寄存器4 | 920 | 0 |
PWM加法寄存器5 | 1245 | 1 | PWM减法寄存器5 | 1155 | 1 |
PWM加法寄存器6 | 1160 | 0 | PWM减法寄存器6 | 1245 | 0 |
PWM加法寄存器7 | 1065 | 1 | PWM减法寄存器7 | 1160 | 1 |
PWM加法寄存器8 | 1090 | 0 | PWM减法寄存器8 | 1065 | 0 |
PWM加法寄存器9 | PWM减法寄存器9 | 1090 | 1 |
Claims (13)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050041101 | 2005-05-17 | ||
KR10-2005-0041101 | 2005-05-17 | ||
KR1020050041101A KR100618408B1 (ko) | 2005-05-17 | 2005-05-17 | 디지털 앰프용 펄스 폭 변조기, 디지털 앰프의 팝 노이즈감소 방법 및 디지털 앰프 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1866728A CN1866728A (zh) | 2006-11-22 |
CN1866728B true CN1866728B (zh) | 2011-06-01 |
Family
ID=37425631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2005100995966A Expired - Fee Related CN1866728B (zh) | 2005-05-17 | 2005-09-14 | 数字放大器、脉冲宽度调制器以及减小其突发噪声的方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7508873B2 (zh) |
KR (1) | KR100618408B1 (zh) |
CN (1) | CN1866728B (zh) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8036303B2 (en) * | 2005-12-27 | 2011-10-11 | Panasonic Corporation | Transmitter apparatus |
JP2007235409A (ja) * | 2006-02-28 | 2007-09-13 | Fujitsu Ten Ltd | 音響信号生成装置 |
TWI318495B (en) * | 2006-06-29 | 2009-12-11 | Realtek Semiconductor Corp | Switching audio power amplifier and method for pop noise suppression |
US7863956B2 (en) * | 2008-10-06 | 2011-01-04 | Telefonaktiebolaget L M Ericsson (Publ) | Pulse-elimination pulse-width modulation |
JP5026488B2 (ja) * | 2008-10-28 | 2012-09-12 | 旭化成エレクトロニクス株式会社 | Pwm信号生成回路、d級増幅器及びその駆動方法 |
US8265303B2 (en) * | 2009-03-11 | 2012-09-11 | Pacifictech Microelectronics, Inc. | Circuits and methods for reducing pop noise in class D amplifiers |
KR100945683B1 (ko) * | 2009-06-17 | 2010-03-05 | 주식회사 엠디아이 | 불요파 노이즈 감소회로를 구비한 오디오 앰프 |
CN102064715A (zh) * | 2009-11-17 | 2011-05-18 | 鸿富锦精密工业(深圳)有限公司 | Pwm控制器相位调节系统及调节方法 |
IT1401466B1 (it) | 2010-06-25 | 2013-07-26 | St Microelectronics Srl | Circuito elettronico per pilotare un amplificatore a commutazione |
US8428204B2 (en) * | 2010-08-20 | 2013-04-23 | Raytheon Company | Recovering distorted digital data |
WO2012033655A1 (en) | 2010-09-10 | 2012-03-15 | Marvell World Trade Ltd | Electro-magnetic interference reduction for switched signal systems |
JP5655733B2 (ja) * | 2011-07-21 | 2015-01-21 | サンケン電気株式会社 | 演算処理装置およびマイクロコンピュータ |
CN102324914B (zh) * | 2011-09-16 | 2013-09-18 | 广东欧珀移动通信有限公司 | 一种pwm输出控制方法 |
CN103379411A (zh) * | 2012-04-13 | 2013-10-30 | 立锜科技股份有限公司 | 降低音频系统启动或关闭时的瞬变信号的控制装置及方法 |
EP2658117B1 (en) * | 2012-04-27 | 2014-08-20 | Nxp B.V. | Pop-noise reducing method for adjusting switching frequency or phase in a class-D amplifier |
TWI479799B (zh) * | 2012-08-13 | 2015-04-01 | Richtek Technology Corp | 可降低零交叉失真的音訊信號處理電路及方法 |
CN102801390B (zh) * | 2012-09-07 | 2015-01-07 | 电子科技大学 | 用于d类音频放大器中的pop噪声抑制电路 |
US9323267B2 (en) * | 2013-03-14 | 2016-04-26 | Flextronics Ap, Llc | Method and implementation for eliminating random pulse during power up of digital signal controller |
JP6172580B2 (ja) * | 2014-12-25 | 2017-08-02 | ヤマハ株式会社 | 差動信号を利用したアナログ信号生成装置および方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004120405A (ja) * | 2002-09-26 | 2004-04-15 | Denon Ltd | デジタル増幅器 |
CN1607721A (zh) * | 2003-05-02 | 2005-04-20 | 三星电子株式会社 | 用于减少爆裂噪声的声音信号发生装置及方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5431625A (en) * | 1991-02-01 | 1995-07-11 | Empi, Inc. | Iontophoresis electronic device having a ramped output current |
JPH04281606A (ja) * | 1991-03-11 | 1992-10-07 | Matsushita Electric Ind Co Ltd | パルス幅変調増幅器 |
US5408150A (en) * | 1992-06-04 | 1995-04-18 | Linear Technology Corporation | Circuit for driving two power mosfets in a half-bridge configuration |
US6016075A (en) * | 1997-06-04 | 2000-01-18 | Lord Corporation | Class-D amplifier input structure |
US6487246B1 (en) * | 1999-04-08 | 2002-11-26 | National Semiconductor Corporation | Method and apparatus for programmable pulse width modulated signal generation with period and duty cycle values updated with controlled relative timing |
JP3916449B2 (ja) | 2001-11-20 | 2007-05-16 | 新日本無線株式会社 | 増幅装置 |
KR100604815B1 (ko) * | 2003-05-02 | 2006-07-26 | 삼성전자주식회사 | 신호 발생장치 및 신호 발생방법 |
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 |
KR100502843B1 (ko) * | 2003-05-16 | 2005-07-21 | 네오피델리티 주식회사 | 싱글 엔드 디지털앰프에서의 팝노이즈 제거방법 및 그시스템 |
-
2005
- 2005-05-17 KR KR1020050041101A patent/KR100618408B1/ko not_active IP Right Cessation
- 2005-07-28 US US11/192,293 patent/US7508873B2/en not_active Expired - Fee Related
- 2005-09-14 CN CN2005100995966A patent/CN1866728B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004120405A (ja) * | 2002-09-26 | 2004-04-15 | Denon Ltd | デジタル増幅器 |
CN1607721A (zh) * | 2003-05-02 | 2005-04-20 | 三星电子株式会社 | 用于减少爆裂噪声的声音信号发生装置及方法 |
Non-Patent Citations (1)
Title |
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全文. |
Also Published As
Publication number | Publication date |
---|---|
KR100618408B1 (ko) | 2006-08-31 |
CN1866728A (zh) | 2006-11-22 |
US20060262843A1 (en) | 2006-11-23 |
US7508873B2 (en) | 2009-03-24 |
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