CN102332876B - 高效放大器和在其中大幅降低电磁干扰的方法 - Google Patents
高效放大器和在其中大幅降低电磁干扰的方法 Download PDFInfo
- Publication number
- CN102332876B CN102332876B CN201110188061.1A CN201110188061A CN102332876B CN 102332876 B CN102332876 B CN 102332876B CN 201110188061 A CN201110188061 A CN 201110188061A CN 102332876 B CN102332876 B CN 102332876B
- Authority
- CN
- China
- Prior art keywords
- high efficiency
- efficiency amplifier
- power signal
- output stage
- signal
- 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.)
- Expired - Fee Related
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
-
- 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
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/16—Modifications for eliminating interference voltages or currents
- H03K17/161—Modifications for eliminating interference voltages or currents in field-effect transistor switches
- H03K17/162—Modifications for eliminating interference voltages or currents in field-effect transistor switches without feedback from the output circuit to the control circuit
- H03K17/163—Soft switching
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/114—Indexing scheme relating to amplifiers the amplifier comprising means for electro-magnetic interference [EMI] protection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/498—A resistor being added in the source circuit of a transistor amplifier stage as degenerating element
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/803,869 US8237495B2 (en) | 2010-07-07 | 2010-07-07 | High efficiency amplifier with reduced electromagnetic interference |
US12/803,869 | 2010-07-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102332876A CN102332876A (zh) | 2012-01-25 |
CN102332876B true CN102332876B (zh) | 2015-08-19 |
Family
ID=44677291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201110188061.1A Expired - Fee Related CN102332876B (zh) | 2010-07-07 | 2011-07-06 | 高效放大器和在其中大幅降低电磁干扰的方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8237495B2 (zh) |
EP (1) | EP2405572A1 (zh) |
KR (2) | KR20120004937A (zh) |
CN (1) | CN102332876B (zh) |
HK (1) | HK1166555A1 (zh) |
TW (1) | TWI555327B (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8731491B2 (en) * | 2011-08-25 | 2014-05-20 | Apple Inc. | Interference reduction systems and methods |
US8947163B2 (en) | 2012-05-02 | 2015-02-03 | Qualcomm Incorporated | Split capacitors scheme for suppressing overshoot voltage glitches in class D amplifier output stage |
TWI560712B (en) | 2012-08-03 | 2016-12-01 | Mstar Semiconductor Inc | Driving circuit and driving method |
CN103578520B (zh) * | 2012-08-09 | 2017-03-01 | 晨星软件研发(深圳)有限公司 | 驱动电路以及驱动方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6294954B1 (en) * | 1999-09-23 | 2001-09-25 | Audiologic, Incorporated | Adaptive dead time control for switching circuits |
CN101257305A (zh) * | 2007-02-26 | 2008-09-03 | 明基电通股份有限公司 | 用于降低电磁干扰的方法及装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5021684A (en) * | 1989-11-09 | 1991-06-04 | Intel Corporation | Process, supply, temperature compensating CMOS output buffer |
US5218239A (en) * | 1991-10-03 | 1993-06-08 | National Semiconductor Corporation | Selectable edge rate cmos output buffer circuit |
US6255867B1 (en) * | 2000-02-23 | 2001-07-03 | Pericom Semiconductor Corp. | CMOS output buffer with feedback control on sources of pre-driver stage |
ITVA20000027A1 (it) * | 2000-08-10 | 2002-02-10 | St Microelectronics Srl | Buffer di uscita e metodo di pilotaggio di un buffer di uscita. |
US6781416B1 (en) * | 2001-12-19 | 2004-08-24 | Rambus Inc. | Push-pull output driver |
KR100564586B1 (ko) * | 2003-11-17 | 2006-03-29 | 삼성전자주식회사 | 비트 구성에 따라 출력신호의 슬루율을 조절하는 데이터출력 드라이버 |
US7190225B2 (en) * | 2004-09-23 | 2007-03-13 | Maxim Integrated Products, Inc. | Efficient low EMI switching output stages and methods |
US7262637B2 (en) * | 2005-03-22 | 2007-08-28 | Micron Technology, Inc. | Output buffer and method having a supply voltage insensitive slew rate |
CN101167237B (zh) | 2005-07-11 | 2011-10-05 | 半导体元件工业有限责任公司 | 开关电容控制器及其方法 |
TWI307218B (en) * | 2006-03-15 | 2009-03-01 | Himax Display Inc | Low emi output driving circuit and method |
US8022756B2 (en) | 2007-05-15 | 2011-09-20 | Qualcomm, Incorporated | Output circuits with class D amplifier |
US7449913B1 (en) | 2007-06-20 | 2008-11-11 | Smartech Worldwide Limited | Pre-driver having slew-rate and crowbar-current controls for a CMOS output buffer |
-
2010
- 2010-07-07 US US12/803,869 patent/US8237495B2/en not_active Expired - Fee Related
-
2011
- 2011-06-30 EP EP11005354A patent/EP2405572A1/en not_active Withdrawn
- 2011-07-06 CN CN201110188061.1A patent/CN102332876B/zh not_active Expired - Fee Related
- 2011-07-06 KR KR1020110066889A patent/KR20120004937A/ko active Application Filing
- 2011-07-06 TW TW100123835A patent/TWI555327B/zh not_active IP Right Cessation
-
2012
- 2012-07-06 HK HK12106646.1A patent/HK1166555A1/zh not_active IP Right Cessation
-
2013
- 2013-05-27 KR KR1020130059569A patent/KR20130080824A/ko not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6294954B1 (en) * | 1999-09-23 | 2001-09-25 | Audiologic, Incorporated | Adaptive dead time control for switching circuits |
CN101257305A (zh) * | 2007-02-26 | 2008-09-03 | 明基电通股份有限公司 | 用于降低电磁干扰的方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
HK1166555A1 (zh) | 2012-11-02 |
KR20130080824A (ko) | 2013-07-15 |
TWI555327B (zh) | 2016-10-21 |
TW201223135A (en) | 2012-06-01 |
CN102332876A (zh) | 2012-01-25 |
EP2405572A1 (en) | 2012-01-11 |
US8237495B2 (en) | 2012-08-07 |
US20120008240A1 (en) | 2012-01-12 |
KR20120004937A (ko) | 2012-01-13 |
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