KR20020056876A - 푸쉬풀 증폭기 및 싸일런트 개시 회로 - Google Patents
푸쉬풀 증폭기 및 싸일런트 개시 회로 Download PDFInfo
- Publication number
- KR20020056876A KR20020056876A KR1020027000999A KR20027000999A KR20020056876A KR 20020056876 A KR20020056876 A KR 20020056876A KR 1020027000999 A KR1020027000999 A KR 1020027000999A KR 20027000999 A KR20027000999 A KR 20027000999A KR 20020056876 A KR20020056876 A KR 20020056876A
- Authority
- KR
- South Korea
- Prior art keywords
- silent
- amplifier
- output
- push
- switching unit
- Prior art date
Links
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
- H03F1/30—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
- 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
- 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
- H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/26—Push-pull amplifiers; Phase-splitters therefor
-
- 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
- H03F2200/78—A comparator being used in a controlling circuit of an amplifier
-
- 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
- H03F2203/45138—Two or more differential amplifiers in IC-block form are combined, e.g. measuring amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Seal Device For Vehicle (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Transplanting Machines (AREA)
Abstract
Description
Claims (3)
- 입력 신호를 수신하는 입력과, 출력 신호를 공급하는 출력을 가지는 푸쉬풀 증폭기(push-pull amplifier)- 상기 푸쉬풀 증폭기는 적어도 2개의 적분기, 비교기 및 피드백 소자를 포함하는 펄스폭 변조기(a pulse width modulator)와, 상기 펄스폭 변조기의 출력에 결합되는 적어도 2개의 스위치를 가지는 스위칭 유닛(a switching unit)과, 상기 스위칭 유닛의 출력에 결합되는 복조 필터를 포함함 -에 있어서,상기 펄스폭 변조기는 개시 잡음(start-up noise)없이 증폭기의 개시(start-up)를 획득하는 싸일런트 개시 회로(a silent start circuit)- 상기 싸일런트 개시 회로는 개시 동안 상기 스위칭 유닛을 디스에이블링(disabling)하는 서든 루프(a sudden loop)를 가짐 -를 포함하는 푸쉬풀 증폭기.
- 제 1 항에 있어서,상기 푸쉬풀 증폭기는 클래스 D 증폭기(a class D amplifier)인 푸쉬풀 증폭기.
- 제 1 항의 푸쉬풀 증폭기에 이용되는 싸일런트 회로.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00201827 | 2000-05-25 | ||
EP00201827.3 | 2000-05-25 | ||
PCT/EP2001/004998 WO2001091285A1 (en) | 2000-05-25 | 2001-05-03 | Silent start |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020056876A true KR20020056876A (ko) | 2002-07-10 |
KR100809242B1 KR100809242B1 (ko) | 2008-02-29 |
Family
ID=8171535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020027000999A KR100809242B1 (ko) | 2000-05-25 | 2001-05-03 | 푸쉬풀 증폭기 및 불감 개시 회로 |
Country Status (8)
Country | Link |
---|---|
US (1) | US6384678B2 (ko) |
EP (1) | EP1293037B1 (ko) |
JP (1) | JP2003534692A (ko) |
KR (1) | KR100809242B1 (ko) |
AT (1) | ATE381808T1 (ko) |
DE (1) | DE60131972T2 (ko) |
ES (1) | ES2296756T3 (ko) |
WO (1) | WO2001091285A1 (ko) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6998911B2 (en) | 2003-12-18 | 2006-02-14 | International Rectifier Corporation | Gate control circuit with soft start/stop function |
CN100525083C (zh) * | 2004-01-07 | 2009-08-05 | 奥特蓝星技术股份有限公司 | 提供改进的脉宽调节放大器的电源拒斥的装置和方法 |
US20060140644A1 (en) * | 2004-12-23 | 2006-06-29 | Paolella Arthur C | High performance, high efficiency fiber optic link for analog and RF systems |
GB2440188B (en) * | 2006-07-14 | 2011-06-08 | Wolfson Ltd | Amplifier Circuits, Methods of Starting and Stopping Amplifier Circuits |
WO2008020384A1 (en) * | 2006-08-15 | 2008-02-21 | Nxp B.V. | Electronic device for self oscillating class d system |
US7872522B2 (en) | 2006-11-15 | 2011-01-18 | Analog Devices, Inc. | Noise reduction system and method for audio switching amplifier |
CN101663813B (zh) * | 2007-03-14 | 2012-09-26 | Nxp股份有限公司 | 用于限幅校正的数据处理系统 |
US7554391B1 (en) | 2008-01-11 | 2009-06-30 | Freescale Semiconductor, Inc. | Amplifier having a virtual ground and method thereof |
CN101939065A (zh) * | 2008-02-14 | 2011-01-05 | Mk合伙控股私人有限责任公司 | 滑板 |
CN102545800B (zh) * | 2010-12-29 | 2015-09-23 | 意法半导体研发(深圳)有限公司 | 放大信号的电路及其方法 |
US9673762B2 (en) * | 2014-10-24 | 2017-06-06 | Cirrus Logic, Inc. | Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57170606A (en) * | 1981-04-10 | 1982-10-20 | Sony Corp | Amplifying circuit for pulse-width-modulated signal |
US5160896A (en) * | 1992-02-18 | 1992-11-03 | Harman International Industries, Incorporated | Class D amplifier |
US5596648A (en) * | 1994-04-07 | 1997-01-21 | Fast; Lawrence R. | Infrared audio transmitter system |
US5805020A (en) | 1996-06-27 | 1998-09-08 | Harris Corporation | Silent start class D amplifier |
CN1258393A (zh) | 1998-01-22 | 2000-06-28 | 皇家菲利浦电子有限公司 | Pwm放大器 |
-
2001
- 2001-05-03 EP EP01938155A patent/EP1293037B1/en not_active Expired - Lifetime
- 2001-05-03 ES ES01938155T patent/ES2296756T3/es not_active Expired - Lifetime
- 2001-05-03 KR KR1020027000999A patent/KR100809242B1/ko active IP Right Grant
- 2001-05-03 DE DE60131972T patent/DE60131972T2/de not_active Expired - Lifetime
- 2001-05-03 WO PCT/EP2001/004998 patent/WO2001091285A1/en active IP Right Grant
- 2001-05-03 JP JP2001586770A patent/JP2003534692A/ja not_active Withdrawn
- 2001-05-03 AT AT01938155T patent/ATE381808T1/de not_active IP Right Cessation
- 2001-05-24 US US09/864,135 patent/US6384678B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2296756T3 (es) | 2008-05-01 |
DE60131972T2 (de) | 2008-12-04 |
DE60131972D1 (de) | 2008-01-31 |
ATE381808T1 (de) | 2008-01-15 |
US6384678B2 (en) | 2002-05-07 |
KR100809242B1 (ko) | 2008-02-29 |
EP1293037A1 (en) | 2003-03-19 |
US20020014916A1 (en) | 2002-02-07 |
JP2003534692A (ja) | 2003-11-18 |
WO2001091285A1 (en) | 2001-11-29 |
EP1293037B1 (en) | 2007-12-19 |
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