CN109565261A - 一种供电电路及音频播放设备 - Google Patents

一种供电电路及音频播放设备 Download PDF

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Publication number
CN109565261A
CN109565261A CN201780047735.1A CN201780047735A CN109565261A CN 109565261 A CN109565261 A CN 109565261A CN 201780047735 A CN201780047735 A CN 201780047735A CN 109565261 A CN109565261 A CN 109565261A
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China
Prior art keywords
voltage
power
power supply
circuit
stablizer
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CN201780047735.1A
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CN109565261B (zh
Inventor
张洵
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • 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
    • H03F1/0216—Continuous control
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0045—Converters combining the concepts of switch-mode regulation and linear regulation, e.g. linear pre-regulator to switching converter, linear and switching converter in parallel, same converter or same transistor operating either in linear or switching mode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)

Abstract

一种供电电路及音频播放设备。该电路用于为音频播放设备中的数模转换器(DAC)和功率放大器(PA)供电，包括：电源转换电路、电压选择电路以及稳压器。其中，稳压器一端用于连接数模转换器(DAC)；另一端连接电压选择电路，用于输出稳定电压为数模转换器(DAC)供电；电源转换电路一端用于连接功率放大器(PA)，另一端用于连接第一供电电源(V1)，用于根据功率放大器(PA)的输出功率，将第一供电电源(V1)的电压转换为能够提供该输出功率的输出电压为功率放大器(PA)供电；电压选择电路的第一输入端用于与第二供电电源(V2)连接，第二输入端与电源转换电路的输出端连接，输出端与稳压器连接，用于根据电源转换电路的输出电压、数模转换器(DAC)所需工作电压及稳压器的输入和输出之间的压差，选择第二供电电源(V2)或电源转换电路为稳压器供电。

Description

PCT国内申请，说明书已公开。

Claims (8)

  1. PCT国内申请，权利要求书已公开。
CN201780047735.1A 2016-11-22 2017-03-09 一种供电电路及音频播放设备 Active CN109565261B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201611048663 2016-11-22
CN2016110486636 2016-11-22
PCT/CN2017/076191 WO2018094910A1 (zh) 2016-11-22 2017-03-09 一种供电电路及音频播放设备

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CN109565261A true CN109565261A (zh) 2019-04-02
CN109565261B CN109565261B (zh) 2021-02-23

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US (1) US10998858B2 (zh)
CN (1) CN109565261B (zh)
WO (1) WO2018094910A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102300544B1 (ko) * 2017-04-07 2021-09-09 (주)드림어스컴퍼니 모듈형 신호 변환 장치 및 방법

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CN201039005Y (zh) * 2007-05-31 2008-03-19 杭州华三通信技术有限公司 一种电源转换电路
CN102299620A (zh) * 2010-06-24 2011-12-28 安凯(广州)微电子技术有限公司 一种电压转换电路及手持设备
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US20130148439A1 (en) * 2009-02-10 2013-06-13 Taiwan Semiconductor Manufacturing Company, Ltd. Memory circuits, systems, and operating methods thereof
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EP2744103A1 (en) * 2012-12-13 2014-06-18 Dialog Semiconductor GmbH Boosted differential Class H Amplifier
EP2840694A1 (en) * 2013-08-20 2015-02-25 St Microelectronics S.A. Multiple level charge pump generating four voltages with four distinctive levels, and method for the same
CN104518743A (zh) * 2013-09-27 2015-04-15 亚德诺半导体集团 Hd类功率放大器
CN104754484A (zh) * 2013-12-27 2015-07-01 Gn瑞声达A/S 具有可切换电源电压的听力设备
CN105528051A (zh) * 2014-10-20 2016-04-27 三星电子株式会社 包括电力路径控制器的片上系统和电子装置
CN105955439A (zh) * 2016-05-31 2016-09-21 浪潮电子信息产业股份有限公司 一种供电的装置及方法

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EP2744103A1 (en) * 2012-12-13 2014-06-18 Dialog Semiconductor GmbH Boosted differential Class H Amplifier
EP2840694A1 (en) * 2013-08-20 2015-02-25 St Microelectronics S.A. Multiple level charge pump generating four voltages with four distinctive levels, and method for the same
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CN104518743A (zh) * 2013-09-27 2015-04-15 亚德诺半导体集团 Hd类功率放大器
CN104754484A (zh) * 2013-12-27 2015-07-01 Gn瑞声达A/S 具有可切换电源电压的听力设备
CN105528051A (zh) * 2014-10-20 2016-04-27 三星电子株式会社 包括电力路径控制器的片上系统和电子装置
CN105955439A (zh) * 2016-05-31 2016-09-21 浪潮电子信息产业股份有限公司 一种供电的装置及方法

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Also Published As

Publication number Publication date
CN109565261B (zh) 2021-02-23
WO2018094910A1 (zh) 2018-05-31
US20200076371A1 (en) 2020-03-05
US10998858B2 (en) 2021-05-04

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