WO2007124422A3 - Low power output stage - Google Patents

Low power output stage Download PDF

Info

Publication number
WO2007124422A3
WO2007124422A3 PCT/US2007/067085 US2007067085W WO2007124422A3 WO 2007124422 A3 WO2007124422 A3 WO 2007124422A3 US 2007067085 W US2007067085 W US 2007067085W WO 2007124422 A3 WO2007124422 A3 WO 2007124422A3
Authority
WO
WIPO (PCT)
Prior art keywords
output stage
power output
low power
control signals
output
Prior art date
Application number
PCT/US2007/067085
Other languages
French (fr)
Other versions
WO2007124422A2 (en
Inventor
Chong U Lee
David Jonathan Julian
Original Assignee
Qualcomm Inc
Chong U Lee
David Jonathan Julian
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc, Chong U Lee, David Jonathan Julian filed Critical Qualcomm Inc
Priority to AT07761014T priority Critical patent/ATE446607T1/en
Priority to JP2009506792A priority patent/JP5139419B2/en
Priority to DE602007002893T priority patent/DE602007002893D1/en
Priority to CN2007800137337A priority patent/CN101421917B/en
Priority to EP07761014A priority patent/EP2013967B1/en
Publication of WO2007124422A2 publication Critical patent/WO2007124422A2/en
Publication of WO2007124422A3 publication Critical patent/WO2007124422A3/en

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
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit

Abstract

Power consumption of an output stage such as a class-D output stage may depend on the amplitude and the activity of the signal being output. Here, control signals may be generated to independently control coupled switches of the output stage and to provide a tri-state control scheme for the output stage. These control signals may be generated based on durations of different levels of an input signal over one or more periods of time.
PCT/US2007/067085 2006-04-20 2007-04-20 Low power output stage WO2007124422A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT07761014T ATE446607T1 (en) 2006-04-20 2007-04-20 POWER AMP WITH LOW POWER CONSUMPTION
JP2009506792A JP5139419B2 (en) 2006-04-20 2007-04-20 Low power output stage
DE602007002893T DE602007002893D1 (en) 2006-04-20 2007-04-20 END LEVEL WITH LOW POWER CONSUMPTION
CN2007800137337A CN101421917B (en) 2006-04-20 2007-04-20 Method and device for controlling coupled a plurality of switch
EP07761014A EP2013967B1 (en) 2006-04-20 2007-04-20 Low power output stage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79403906P 2006-04-20 2006-04-20
US60/794,039 2006-04-20

Publications (2)

Publication Number Publication Date
WO2007124422A2 WO2007124422A2 (en) 2007-11-01
WO2007124422A3 true WO2007124422A3 (en) 2008-01-17

Family

ID=38610916

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/067085 WO2007124422A2 (en) 2006-04-20 2007-04-20 Low power output stage

Country Status (11)

Country Link
US (1) US7576605B2 (en)
EP (1) EP2013967B1 (en)
JP (1) JP5139419B2 (en)
KR (1) KR101151922B1 (en)
CN (1) CN101421917B (en)
AR (1) AR060571A1 (en)
AT (1) ATE446607T1 (en)
CL (1) CL2007001145A1 (en)
DE (1) DE602007002893D1 (en)
TW (1) TWI347082B (en)
WO (1) WO2007124422A2 (en)

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US8654868B2 (en) 2006-04-18 2014-02-18 Qualcomm Incorporated Offloaded processing for wireless applications
US8289159B2 (en) 2006-04-26 2012-10-16 Qualcomm Incorporated Wireless localization apparatus and method
KR101124785B1 (en) 2006-04-26 2012-03-23 콸콤 인코포레이티드 Dynamic distribution of device functionality and resource management
US8406794B2 (en) 2006-04-26 2013-03-26 Qualcomm Incorporated Methods and apparatuses of initiating communication in wireless networks
US7825724B2 (en) * 2007-12-18 2010-11-02 Motorola Mobility, Inc. Method and apparatus for direct digital to radio frequency conversion
US7969242B2 (en) * 2008-07-24 2011-06-28 Qualcomm Incorporated Switching power amplifier for quantized signals
JP6089974B2 (en) * 2013-05-30 2017-03-08 株式会社デンソー Power line communication system, master and slave
US10217472B2 (en) 2013-12-28 2019-02-26 Intel Corporation System and method for data transmission over an audio jack
US10230362B2 (en) 2016-12-23 2019-03-12 Microsoft Technology Licensing, Llc Enhanced resonant circuit amplifier
WO2018173295A1 (en) 2017-03-24 2018-09-27 ヤマハ株式会社 User interface device, user interface method, and sound operation system
US10756795B2 (en) 2018-12-18 2020-08-25 XCOM Labs, Inc. User equipment with cellular link and peer-to-peer link
US11063645B2 (en) 2018-12-18 2021-07-13 XCOM Labs, Inc. Methods of wirelessly communicating with a group of devices
US11330649B2 (en) 2019-01-25 2022-05-10 XCOM Labs, Inc. Methods and systems of multi-link peer-to-peer communications

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Also Published As

Publication number Publication date
EP2013967A2 (en) 2009-01-14
JP5139419B2 (en) 2013-02-06
KR101151922B1 (en) 2012-06-01
ATE446607T1 (en) 2009-11-15
JP2009534951A (en) 2009-09-24
TWI347082B (en) 2011-08-11
US20070257827A1 (en) 2007-11-08
CN101421917B (en) 2012-11-14
EP2013967B1 (en) 2009-10-21
WO2007124422A2 (en) 2007-11-01
US7576605B2 (en) 2009-08-18
AR060571A1 (en) 2008-06-25
TW200818697A (en) 2008-04-16
CL2007001145A1 (en) 2008-02-22
CN101421917A (en) 2009-04-29
DE602007002893D1 (en) 2009-12-03
KR20080111540A (en) 2008-12-23

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