WO2002025809A3 - Switching power amplifier - Google Patents

Switching power amplifier Download PDF

Info

Publication number
WO2002025809A3
WO2002025809A3 PCT/EP2001/010317 EP0110317W WO0225809A3 WO 2002025809 A3 WO2002025809 A3 WO 2002025809A3 EP 0110317 W EP0110317 W EP 0110317W WO 0225809 A3 WO0225809 A3 WO 0225809A3
Authority
WO
WIPO (PCT)
Prior art keywords
switching power
power amplifier
amplifier
emi
deteriorating
Prior art date
Application number
PCT/EP2001/010317
Other languages
French (fr)
Other versions
WO2002025809A2 (en
Inventor
Bruno J G Putzeys
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Priority to EP01960725A priority Critical patent/EP1323230B1/en
Priority to JP2002528907A priority patent/JP2004509548A/en
Priority to DE60128117T priority patent/DE60128117T2/en
Priority to KR1020027006424A priority patent/KR20020067522A/en
Publication of WO2002025809A2 publication Critical patent/WO2002025809A2/en
Publication of WO2002025809A3 publication Critical patent/WO2002025809A3/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
    • 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
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several 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
    • 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
    • H03F3/2178—Class D power amplifiers; Switching amplifiers using more than one switch or switching amplifier in parallel or in series
    • 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
    • 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
    • H03F2200/372—Noise reduction and elimination in amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/537—A transformer being used as coupling element between two amplifying stages

Abstract

Switching power amplifiers are used for example in audio applications. Using Class D technology is used to obtain efficient performance. To improve the switching power amplifier further it is proposed to combine a plurality of low-power switching power stages into a larger amplifier. The precision and efficiency of a switching power amplifier is improved without deteriorating the noise and EMI.
PCT/EP2001/010317 2000-09-21 2001-09-06 Switching power amplifier WO2002025809A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP01960725A EP1323230B1 (en) 2000-09-21 2001-09-06 Switching power amplifier
JP2002528907A JP2004509548A (en) 2000-09-21 2001-09-06 Switching power amplifier
DE60128117T DE60128117T2 (en) 2000-09-21 2001-09-06 SWITCHING POWER BOOST
KR1020027006424A KR20020067522A (en) 2000-09-21 2001-09-06 Switching power amplifier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP00203269 2000-09-21
EP00203269.6 2000-09-21

Publications (2)

Publication Number Publication Date
WO2002025809A2 WO2002025809A2 (en) 2002-03-28
WO2002025809A3 true WO2002025809A3 (en) 2002-06-06

Family

ID=8172042

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/010317 WO2002025809A2 (en) 2000-09-21 2001-09-06 Switching power amplifier

Country Status (8)

Country Link
US (1) US6803816B2 (en)
EP (1) EP1323230B1 (en)
JP (1) JP2004509548A (en)
KR (1) KR20020067522A (en)
CN (1) CN1319269C (en)
AT (1) ATE360916T1 (en)
DE (1) DE60128117T2 (en)
WO (1) WO2002025809A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7116956B2 (en) * 2001-02-16 2006-10-03 Cubic Corporation Power oscillator for control of waveshape and amplitude
US7200187B2 (en) * 2001-07-26 2007-04-03 O'brien Thomas J Modulator for digital amplifier
US6982662B2 (en) * 2003-03-06 2006-01-03 Texas Instruments Incorporated Method and apparatus for efficient conversion of signals using look-up table
US7053700B2 (en) * 2003-06-02 2006-05-30 Nortel Networks Limited High-efficiency amplifier and method
JP4817890B2 (en) * 2005-03-17 2011-11-16 パナソニック株式会社 Amplifying device, polar modulation transmitting device, and wireless communication device
JP4710870B2 (en) * 2007-05-10 2011-06-29 ヤマハ株式会社 Digital amplifier device and speaker device
US7629840B2 (en) * 2007-10-22 2009-12-08 Freescale Semiconductor, Inc. Digital pulse width modulated feedback system for a switching amplifier and method therefor
US7847433B2 (en) * 2007-11-27 2010-12-07 Rain Bird Corporation Universal irrigation controller power supply
KR20100008749A (en) * 2008-07-16 2010-01-26 삼성전자주식회사 Switching power amplifier and control method thereof
US8174333B1 (en) * 2011-01-04 2012-05-08 Nxp B.V. Power-efficient spectrum shaping for a magnetic link
EP2770634B1 (en) * 2013-02-25 2018-09-19 Telefonaktiebolaget LM Ericsson (publ) Distributed power amplifier circuit
FR3023089B1 (en) * 2014-06-30 2016-07-22 Devialet AUDIO AMPLIFIER VERY HIGH FIDELITY

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164714A (en) * 1977-09-26 1979-08-14 Harris Corporation Polyphase PDM amplifier
WO1992011699A1 (en) * 1990-12-19 1992-07-09 British Technology Group Ltd. Digital-to-analogue conversion
US5524171A (en) * 1992-06-05 1996-06-04 Thomson-Csf Device for the processing and pre-correction of an audio signal before it is amplified in an amplification system of a transmitter with amplitude modulation
US5617058A (en) * 1995-11-13 1997-04-01 Apogee Technology, Inc. Digital signal processing for linearization of small input signals to a tri-state power switch
US6107876A (en) * 1999-04-13 2000-08-22 Ravisent Technologies, Inc. Digital input switching audio power amplifier

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4614901A (en) * 1985-10-15 1986-09-30 Kennedy Company Servo power amplifier having load equalization
US5099203A (en) * 1990-06-05 1992-03-24 Continental Electronics Corporation Power amplifier having multiple switched stages and method of operating same
US5339041A (en) * 1993-07-06 1994-08-16 The Boeing Company High efficiency power amplifier
US5734565A (en) * 1996-08-16 1998-03-31 American Superconductor Corporation Reducing switching losses in series connected bridge inverters and amplifiers
JPH1141078A (en) * 1997-07-16 1999-02-12 Wako Giken:Kk Method and device for shortening dead time of semiconductor device and pwm inverter
US5959501A (en) 1998-01-14 1999-09-28 Harris Corporation Class D amplifier with scaled clock and related methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164714A (en) * 1977-09-26 1979-08-14 Harris Corporation Polyphase PDM amplifier
US4164714B1 (en) * 1977-09-26 1984-12-25
WO1992011699A1 (en) * 1990-12-19 1992-07-09 British Technology Group Ltd. Digital-to-analogue conversion
US5524171A (en) * 1992-06-05 1996-06-04 Thomson-Csf Device for the processing and pre-correction of an audio signal before it is amplified in an amplification system of a transmitter with amplitude modulation
US5617058A (en) * 1995-11-13 1997-04-01 Apogee Technology, Inc. Digital signal processing for linearization of small input signals to a tri-state power switch
US6107876A (en) * 1999-04-13 2000-08-22 Ravisent Technologies, Inc. Digital input switching audio power amplifier

Also Published As

Publication number Publication date
CN1561573A (en) 2005-01-05
ATE360916T1 (en) 2007-05-15
CN1319269C (en) 2007-05-30
US20020053945A1 (en) 2002-05-09
US6803816B2 (en) 2004-10-12
DE60128117T2 (en) 2007-12-27
JP2004509548A (en) 2004-03-25
WO2002025809A2 (en) 2002-03-28
EP1323230A2 (en) 2003-07-02
EP1323230B1 (en) 2007-04-25
KR20020067522A (en) 2002-08-22
DE60128117D1 (en) 2007-06-06

Similar Documents

Publication Publication Date Title
WO2004027982A3 (en) Linear power amplifier with multiple output power levels
ATE422108T1 (en) COMPOSITE AMPLIFIER STRUCTURE
WO2002025809A3 (en) Switching power amplifier
AU2001259408A1 (en) Rf power amplifier having high power-added efficiency
TWI347084B (en) N-way rf power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division
SE0004420D0 (en) Amplifier
AU2001296740A1 (en) Power control of switched-mode power amplifiers with one or more stages
EP1583227A4 (en) Doherty amplifier
WO2002031967A3 (en) Distributed circular geometry power amplifier architecture
AU2001280068A1 (en) High-efficiency audio power amplifier
EP1191683A3 (en) High frequency power amplifier module and wireless communication apparatus
AU2002332018A1 (en) Single output stage power amplification for multimode applications
EP1330021A3 (en) Switchable power amplifier
AU2002213461A1 (en) Linear power amplifier bias circuit
MY136501A (en) Method and apparatus to match output impedance of combined outphasing power amplifiers
EP1263096A3 (en) Improved wide band erbium-doped fiber amplfier (EDFA)
CA2257518A1 (en) Split-pumped dual stage optical fiber amplifier
TW200703884A (en) Miller-compensated amplifier
WO2001067602A3 (en) Electronic switch
ATE504109T1 (en) SWITCHED POWER SUPPLY FOR HF POWER AMPLIFIER
WO2006121650A8 (en) Power amplifier with an output matching network
SE0002148L (en) Composite amplifier
EP1768254A4 (en) High output amplifier
WO2002050994A3 (en) Linearized class c amplifier with dynamic biasing
SE0201908L (en) Efficient generation of radio frequency streams

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): CN JP KR

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

WWE Wipo information: entry into national phase

Ref document number: 2001960725

Country of ref document: EP

ENP Entry into the national phase

Ref country code: JP

Ref document number: 2002 528907

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 1020027006424

Country of ref document: KR

Ref document number: 018028098

Country of ref document: CN

AK Designated states

Kind code of ref document: A3

Designated state(s): CN JP KR

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

WWP Wipo information: published in national office

Ref document number: 1020027006424

Country of ref document: KR

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 2001960725

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 2001960725

Country of ref document: EP