CN104518743A - Hd类功率放大器 - Google Patents
Hd类功率放大器 Download PDFInfo
- Publication number
- CN104518743A CN104518743A CN201410502553.7A CN201410502553A CN104518743A CN 104518743 A CN104518743 A CN 104518743A CN 201410502553 A CN201410502553 A CN 201410502553A CN 104518743 A CN104518743 A CN 104518743A
- Authority
- CN
- China
- Prior art keywords
- analog
- casacade multi
- digital converter
- amplifier
- power stage
- 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.)
- Granted
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
- H03F3/2175—Class D power amplifiers; Switching amplifiers using analogue-digital or digital-analogue conversion
-
- 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
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0244—Stepped control
- H03F1/025—Stepped control by using a signal derived from the input signal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (22)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/039,208 US9136805B2 (en) | 2013-09-27 | 2013-09-27 | Class HD power amplifier |
US14/039,208 | 2013-09-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104518743A true CN104518743A (zh) | 2015-04-15 |
CN104518743B CN104518743B (zh) | 2018-04-13 |
Family
ID=52739529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410502553.7A Active CN104518743B (zh) | 2013-09-27 | 2014-09-26 | Hd类功率放大器 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9136805B2 (zh) |
CN (1) | CN104518743B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018094910A1 (zh) * | 2016-11-22 | 2018-05-31 | 华为技术有限公司 | 一种供电电路及音频播放设备 |
CN111049481A (zh) * | 2018-10-15 | 2020-04-21 | 半导体元件工业有限责任公司 | 具有多个σ-δ调制器以驱动输出负载的音频放大器 |
CN111049481B (zh) * | 2018-10-15 | 2024-05-10 | 半导体元件工业有限责任公司 | 具有多个σ-δ调制器以驱动输出负载的音频放大器 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9806682B1 (en) * | 2015-02-24 | 2017-10-31 | Marvell International Ltd. | Multilevel class-D amplifiers |
WO2017075448A1 (en) * | 2015-10-28 | 2017-05-04 | Analog Devices Global | Power inverter control |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101136616A (zh) * | 2006-08-30 | 2008-03-05 | 凌浩科技股份有限公司 | 西格玛-德尔塔型功率放大器及其调变方法 |
CN101136590A (zh) * | 2006-08-31 | 2008-03-05 | 沃福森微电子有限公司 | Dc-dc变换器电路以及包括该电路的方法和设备 |
CN202135100U (zh) * | 2011-06-22 | 2012-02-01 | 无锡闻德科技有限公司 | 三电平d类音频功率放大器 |
CN102638229A (zh) * | 2012-04-18 | 2012-08-15 | 上海艾为电子技术有限公司 | 音频放大电路 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3932259B2 (ja) * | 2001-12-12 | 2007-06-20 | 株式会社ルネサステクノロジ | 高周波電力増幅回路および無線通信用電子部品 |
US7130415B2 (en) * | 2002-06-28 | 2006-10-31 | Texas Instruments Incorporated | Line Driver apparatus |
US7132891B1 (en) * | 2004-08-17 | 2006-11-07 | Rf Micro Devices, Inc. | Power amplifier control using a switching power supply |
US7474157B2 (en) * | 2006-07-07 | 2009-01-06 | Sonavox Canada Inc. | Power amplifier |
US7852150B1 (en) * | 2007-12-20 | 2010-12-14 | The Tc Group A/S | Switching amplifier driven by a controlled power supply |
GB2465552B (en) * | 2008-11-18 | 2015-12-09 | Nujira Ltd | Power supply arrangement for multi-stage amplifier |
US8884702B2 (en) * | 2012-09-14 | 2014-11-11 | Broadcom Corporation | Power amplifier with supply switching |
US8829993B2 (en) * | 2012-10-30 | 2014-09-09 | Eta Devices, Inc. | Linearization circuits and methods for multilevel power amplifier systems |
-
2013
- 2013-09-27 US US14/039,208 patent/US9136805B2/en active Active
-
2014
- 2014-09-26 CN CN201410502553.7A patent/CN104518743B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101136616A (zh) * | 2006-08-30 | 2008-03-05 | 凌浩科技股份有限公司 | 西格玛-德尔塔型功率放大器及其调变方法 |
CN101136590A (zh) * | 2006-08-31 | 2008-03-05 | 沃福森微电子有限公司 | Dc-dc变换器电路以及包括该电路的方法和设备 |
CN202135100U (zh) * | 2011-06-22 | 2012-02-01 | 无锡闻德科技有限公司 | 三电平d类音频功率放大器 |
CN102638229A (zh) * | 2012-04-18 | 2012-08-15 | 上海艾为电子技术有限公司 | 音频放大电路 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018094910A1 (zh) * | 2016-11-22 | 2018-05-31 | 华为技术有限公司 | 一种供电电路及音频播放设备 |
CN109565261A (zh) * | 2016-11-22 | 2019-04-02 | 华为技术有限公司 | 一种供电电路及音频播放设备 |
US10998858B2 (en) | 2016-11-22 | 2021-05-04 | Huawei Technologies Co., Ltd. | Power supply circuit and audio play device |
CN111049481A (zh) * | 2018-10-15 | 2020-04-21 | 半导体元件工业有限责任公司 | 具有多个σ-δ调制器以驱动输出负载的音频放大器 |
CN111049481B (zh) * | 2018-10-15 | 2024-05-10 | 半导体元件工业有限责任公司 | 具有多个σ-δ调制器以驱动输出负载的音频放大器 |
Also Published As
Publication number | Publication date |
---|---|
US9136805B2 (en) | 2015-09-15 |
US20150091644A1 (en) | 2015-04-02 |
CN104518743B (zh) | 2018-04-13 |
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GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder | ||
CP01 | Change in the name or title of a patent holder |
Address after: Limerick Patentee after: Analog Devices Global Unlimited Co. Address before: Limerick Patentee before: Analog Devices Global |
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CP02 | Change in the address of a patent holder | ||
CP02 | Change in the address of a patent holder |
Address after: Limerick Patentee after: Analog Devices Global Address before: Bermuda (UK) Hamilton Patentee before: Analog Devices Global |
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TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210629 Address after: Limerick Patentee after: ANALOG DEVICES INTERNATIONAL UNLIMITED Co. Address before: Limerick Patentee before: Analog Devices Global Unlimited Co. |