CA2154490C - Closed loop power controller - Google Patents

Closed loop power controller Download PDF

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Publication number
CA2154490C
CA2154490C CA002154490A CA2154490A CA2154490C CA 2154490 C CA2154490 C CA 2154490C CA 002154490 A CA002154490 A CA 002154490A CA 2154490 A CA2154490 A CA 2154490A CA 2154490 C CA2154490 C CA 2154490C
Authority
CA
Canada
Prior art keywords
signal
closed
loop system
set forth
input
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
Application number
CA002154490A
Other languages
English (en)
French (fr)
Other versions
CA2154490A1 (en
Inventor
Onkar S. Modgil
Robert G. Nelson
Margaret S. Reif
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2154490A1 publication Critical patent/CA2154490A1/en
Application granted granted Critical
Publication of CA2154490C publication Critical patent/CA2154490C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • H03M3/432—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one the quantiser being a pulse width modulation type analogue/digital converter, i.e. differential pulse width modulation
    • 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/083—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements in transistor 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Amplifiers (AREA)
CA002154490A 1993-01-22 1994-01-13 Closed loop power controller Expired - Fee Related CA2154490C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/007,521 US5352986A (en) 1993-01-22 1993-01-22 Closed loop power controller
US08/007,521 1993-01-22
PCT/US1994/000512 WO1994017588A1 (en) 1993-01-22 1994-01-13 Closed loop power controller

Publications (2)

Publication Number Publication Date
CA2154490A1 CA2154490A1 (en) 1994-08-04
CA2154490C true CA2154490C (en) 2003-03-25

Family

ID=21726692

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002154490A Expired - Fee Related CA2154490C (en) 1993-01-22 1994-01-13 Closed loop power controller

Country Status (5)

Country Link
US (2) US5352986A (en:Method)
AU (1) AU6266894A (en:Method)
CA (1) CA2154490C (en:Method)
TW (1) TW246754B (en:Method)
WO (1) WO1994017588A1 (en:Method)

Families Citing this family (44)

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US5352986A (en) * 1993-01-22 1994-10-04 Digital Fidelity, Inc. Closed loop power controller
DE19541832A1 (de) * 1995-11-10 1997-05-15 Thomson Brandt Gmbh Motorsteuerung für elektronisch kommutierende Gleichstrommotoren zur Kompensation von Drehmomenteinbrüchen
US5777512A (en) * 1996-06-20 1998-07-07 Tripath Technology, Inc. Method and apparatus for oversampled, noise-shaping, mixed-signal processing
ATE255784T1 (de) * 1996-10-31 2003-12-15 Bang & Olufsen As Pulsmodulierterkeistungsverstärker mit verbessertem kaskadiertem steuerungsverfahren
US5898340A (en) * 1996-11-20 1999-04-27 Chatterjee; Manjirnath A. High power efficiency audio amplifier with digital audio and volume inputs
DE69627043T2 (de) 1996-12-11 2004-01-15 Gn Netcom As Ballerup Klasse-d-verstärker
US5847602A (en) * 1997-03-03 1998-12-08 Hewlett-Packard Company Method and apparatus for linearizing an efficient class D/E power amplifier using delta modulation
CA2285355C (en) 1997-04-02 2004-06-08 Karsten Nielsen Pulse referenced control method for enhanced power amplification of a pulse modulated signal
US5974089A (en) * 1997-07-22 1999-10-26 Tripath Technology, Inc. Method and apparatus for performance improvement by qualifying pulses in an oversampled noise-shaping signal processor
US5905407A (en) * 1997-07-30 1999-05-18 Motorola, Inc. High efficiency power amplifier using combined linear and switching techniques with novel feedback system
WO1999008378A2 (en) * 1997-08-12 1999-02-18 Koninklijke Philips Electronics N.V. Device for amplifying digital signals
US5909153A (en) * 1998-02-05 1999-06-01 Tripath Technology, Inc. Method and apparatus for compensating for delays in modulator loops
US6229390B1 (en) * 1999-03-09 2001-05-08 Tripath Technology, Inc. Methods and apparatus for noise shaping a mixed signal power output
EP1247328B1 (en) * 2000-01-03 2005-08-31 Harman International Industries, Incorporated Power converter with remote and local sensing feedback signals combined in a high-order constant-sum filter
US6753729B2 (en) * 2000-01-06 2004-06-22 Mitek Corporation Self-oscillating variable frequency closed loop Class D amplifier
US6414560B2 (en) 2000-03-03 2002-07-02 Tripath Technology, Inc. Loop delay compensation for a digital power amplifier
US6970503B1 (en) 2000-04-21 2005-11-29 National Semiconductor Corporation Apparatus and method for converting analog signal to pulse-width-modulated signal
AU2001280695A1 (en) * 2000-07-20 2002-02-05 Tripath Technology, Inc. Schemes for maximizing efficiency of power amplifier under power backoff conditions and reducing transmit-band noise floor and adjacent channel power
US6577189B2 (en) 2000-07-20 2003-06-10 Tripath Technology, Inc. Scheme for reducing transmit-band noise floor and adjacent channel power with power backoff
US6630899B2 (en) 2000-07-20 2003-10-07 Tripath Technology, Inc. Scheme for maximizing efficiency of power amplifier under power backoff conditions
CA2362104A1 (en) * 2000-10-30 2002-04-30 Simon Fraser University High efficiency power amplifier systems and methods
GB0110340D0 (en) * 2001-04-27 2001-06-20 Watts Robert D A signal processing circuit
US7200187B2 (en) * 2001-07-26 2007-04-03 O'brien Thomas J Modulator for digital amplifier
SE0203403D0 (sv) * 2002-11-15 2002-11-15 Bang & Olufsen Icepower As Pulse modulated power converter
US7038535B2 (en) * 2003-03-29 2006-05-02 Wai Laing Lee PWM digital amplifier with high-order loop filter
US7940033B2 (en) * 2003-04-22 2011-05-10 Aivaka, Inc. Control loop for switching power converters
WO2004100356A2 (en) * 2003-05-09 2004-11-18 Danmarks Tekniske Universitet Global loop integrating modulator
US20040232978A1 (en) * 2003-05-23 2004-11-25 Easson Craig Alexander Filterless class D amplifiers using spread spectrum PWM modulation
DE10358306B8 (de) 2003-12-08 2005-03-03 Coty B.V. Kosmetisches und dermatologisches Sauerstoff-Trägersystem, Verfahren zu dessen Herstellung sowie seine Verwendung
US7023267B2 (en) * 2004-02-17 2006-04-04 Prophesi Technologies, Inc. Switching power amplifier using a frequency translating delta sigma modulator
EP1759454A1 (en) * 2004-06-04 2007-03-07 Silocon Power Devices APS Power amplifier and pulse-width modulated amplifier
DE102004039459B4 (de) 2004-08-10 2011-06-16 Lancaster Group Gmbh Kosmetischer Wirkstoffkomplex zur Hautregenerierung
DE102004039631A1 (de) 2004-08-11 2006-03-02 Lancaster Group Gmbh Pigmenthaltiges kosmetisches Mittel mit Anti-Alterungswirkung für die Haut
US20060044057A1 (en) * 2004-08-26 2006-03-02 Rahmi Hezar Class-D amplifier having high order loop filtering
US7142047B2 (en) * 2004-11-29 2006-11-28 Tripath Technology, Inc. Offset cancellation in a switching amplifier
US7352237B2 (en) * 2005-03-25 2008-04-01 Pulsewave Rf, Inc. Radio frequency power amplifier and corresponding method
WO2006109245A1 (en) * 2005-04-15 2006-10-19 Koninklijke Philips Electronics N.V. Class-d amplifier
CN101512910A (zh) * 2005-04-28 2009-08-19 脉波Rf公司 射频功率放大器及采用多个反馈系统的方法
DE102005041052B3 (de) 2005-08-30 2007-03-29 Infineon Technologies Ag Verfahren zur Stabilitätskontrolle einer selbstschwingenden Treiberschaltung und selbstschwingende Treiberschaltung
DE102006013000A1 (de) * 2006-03-22 2007-09-27 Conti Temic Microelectronic Gmbh Verfahren und Anordnung zum digitalen Übermitteln eines analogen Messsignals
WO2007149346A2 (en) * 2006-06-16 2007-12-27 Pulsewave Rf, Inc. Radio frequency power amplifier and method using a controlled supply
DE102006058394B3 (de) 2006-12-07 2008-06-26 Coty Prestige Lancaster Group Gmbh Hautbräunungs-Basisformulierung mit DHA
JP5192050B2 (ja) * 2007-11-29 2013-05-08 ハインス イノベーションズ ビー．ブイ． 静電型スピーカシステム
US9509261B2 (en) * 2013-12-02 2016-11-29 Crestron Electronics Inc. Reduced crosstalk and matched output power audio amplifier

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59814Y2 (ja) * 1977-04-22 1984-01-11 ブライアン・ア−ネスト・アトウツド Ｄ級増幅器
JPS5967719A (ja) * 1982-10-09 1984-04-17 Nippon Gakki Seizo Kk パルス幅変調回路
US4724396A (en) * 1984-08-21 1988-02-09 Peavey Electronics Corporation Digital audio amplifier
US5218315A (en) * 1992-01-06 1993-06-08 Infinity Systems, Inc. Switching amplifier
US5352986A (en) * 1993-01-22 1994-10-04 Digital Fidelity, Inc. Closed loop power controller

Also Published As

Publication number Publication date
CA2154490A1 (en) 1994-08-04
WO1994017588A1 (en) 1994-08-04
AU6266894A (en) 1994-08-15
TW246754B (en:Method) 1995-05-01
US5352986A (en) 1994-10-04
US5521549A (en) 1996-05-28

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