KR900004193B1 - Pwm signal amplification circuit - Google Patents

Pwm signal amplification circuit

Info

Publication number
KR900004193B1
KR900004193B1 KR8201607A KR820001607A KR900004193B1 KR 900004193 B1 KR900004193 B1 KR 900004193B1 KR 8201607 A KR8201607 A KR 8201607A KR 820001607 A KR820001607 A KR 820001607A KR 900004193 B1 KR900004193 B1 KR 900004193B1
Authority
KR
South Korea
Prior art keywords
integrator
output
amplifier
pwm signal
amplification circuit
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
Application number
KR8201607A
Other languages
English (en)
Korean (ko)
Other versions
KR840000112A (ko
Inventor
Miki Abe
Original Assignee
Sony Co Ltd
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 Sony Co Ltd filed Critical Sony Co Ltd
Publication of KR840000112A publication Critical patent/KR840000112A/ko
Application granted granted Critical
Publication of KR900004193B1 publication Critical patent/KR900004193B1/ko
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • 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
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
KR8201607A 1981-04-10 1982-04-10 Pwm signal amplification circuit Expired KR900004193B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP56054680A JPS57170606A (en) 1981-04-10 1981-04-10 Amplifying circuit for pulse-width-modulated signal
JP56-54680 1981-04-10

Publications (2)

Publication Number Publication Date
KR840000112A KR840000112A (ko) 1984-01-30
KR900004193B1 true KR900004193B1 (en) 1990-06-18

Family

ID=12977495

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8201607A Expired KR900004193B1 (en) 1981-04-10 1982-04-10 Pwm signal amplification circuit

Country Status (9)

Country Link
US (1) US4458208A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS57170606A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR900004193B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU550765B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1173524A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3213269A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2503961B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2096850B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL8201546A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1215247B (it) * 1985-03-13 1990-01-31 Ates Componenti Elettron Dispositivo e procedimento per azzerare un segnale di uscita in un amplificatore a commutazione.
JPS62145906A (ja) * 1985-12-20 1987-06-30 Nec Corp 増幅回路
JPH04281606A (ja) * 1991-03-11 1992-10-07 Matsushita Electric Ind Co Ltd パルス幅変調増幅器
US5451900A (en) * 1993-03-17 1995-09-19 Kabushiki Kaisha Toshiba Pulse width modulation circuit
DE19512383A1 (de) * 1995-04-01 1996-10-10 Nokia Deutschland Gmbh Klasse-D-Leistungsverstärker
US5672998A (en) * 1995-08-09 1997-09-30 Harris Corporation Class D amplifier and method
DE19620693C1 (de) * 1996-05-22 1997-06-26 Becker Gmbh Verstärkerschaltung
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
US5767740A (en) * 1996-09-27 1998-06-16 Harris Corporation Switching amplifier closed loop dual comparator modulation technique
WO1999038255A2 (en) * 1998-01-22 1999-07-29 Koninklijke Philips Electronics N.V. Pwm amplifier
US6118336A (en) * 1998-10-30 2000-09-12 Intersil Corporation Start-up circuit for self oscillating class D modulator
EP1001526B1 (en) * 1998-11-13 2005-04-20 STMicroelectronics S.r.l. PWM bridge amplifier with input network configurable for analog or digital input not needing a triangular wave generator
US6249182B1 (en) * 1998-11-18 2001-06-19 Intersil Corporation Class D amplifier with bandwidth independent of load impedance
US6246283B1 (en) * 1999-03-09 2001-06-12 Tripath Technology, Inc. Power efficient line driver
DE69926479D1 (de) 1999-04-27 2005-09-08 St Microelectronics Srl Klasse D Verstärker mit hoher Bandbreite
JP2003534693A (ja) * 2000-05-25 2003-11-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ カルーセル・ハンドシェイク
ATE381808T1 (de) * 2000-05-25 2008-01-15 Nxp Bv Störfreie einschaltung
WO2002058229A1 (en) * 2001-01-18 2002-07-25 Dlogix Co., Ltd. Digital power amplifier
GB0110340D0 (en) * 2001-04-27 2001-06-20 Watts Robert D A signal processing circuit
JP2003110441A (ja) * 2001-09-26 2003-04-11 Toshiba Microelectronics Corp ポップ音低減回路及び音声出力増幅装置
US20070139109A1 (en) * 2005-12-21 2007-06-21 Jun Honda Class d amplifier with start-up click noise elimination
US8013678B2 (en) 2006-03-03 2011-09-06 Bang & Olufsen Icepower A/S, Gi. Hybrid feedback controlled oscillation modulator and switching power amplifier system
US8022756B2 (en) 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
US8046192B2 (en) * 2008-02-29 2011-10-25 Smurfit-Stone Container Enterprises, Inc. Baler machine monitoring and performance interfaces, systems and methods
US8957726B2 (en) * 2012-10-04 2015-02-17 Semiconductor Components Industries, Llc Amplification circuit and method therefor
US10164581B2 (en) 2014-12-08 2018-12-25 Icepower A/S Self-oscillating amplifier with high order loop filter
WO2019131162A1 (ja) * 2017-12-27 2019-07-04 ソニーセミコンダクタソリューションズ株式会社 増幅器および信号処理回路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239922A (en) * 1967-04-27 1971-07-21 K D G Instr Ltd Modulated pulse computing circuits
JPS5323419Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-11-20 1978-06-16
US4061930A (en) * 1976-06-11 1977-12-06 Rohr Industries, Incorporated Base drive inhibit circuit
JPS5947486B2 (ja) * 1976-12-06 1984-11-19 ソニー株式会社 パルス幅変調増巾回路
DE2854196A1 (de) * 1978-12-15 1980-06-26 Bosch Gmbh Robert Schaltungsanordnung zur einschaltverzoegerung bei einer verstaerkerschaltung

Also Published As

Publication number Publication date
JPS57170606A (en) 1982-10-20
DE3213269C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-04-02
KR840000112A (ko) 1984-01-30
AU8237382A (en) 1982-10-14
FR2503961B1 (fr) 1986-03-28
US4458208A (en) 1984-07-03
CA1173524A (en) 1984-08-28
DE3213269A1 (de) 1982-11-04
GB2096850A (en) 1982-10-20
GB2096850B (en) 1984-10-17
AU550765B2 (en) 1986-04-10
FR2503961A1 (fr) 1982-10-15
NL8201546A (nl) 1982-11-01

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St.27 status event code: A-0-1-A10-A12-nap-PA0109

R17-X000 Change to representative recorded

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PG1501 Laying open of application

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PG1605 Publication of application before grant of patent

St.27 status event code: A-2-2-Q10-Q13-nap-PG1605

PE0701 Decision of registration

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PC1903 Unpaid annual fee

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Not in force date: 19930619

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

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Not in force date: 19930619

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PN2301 Change of applicant

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St.27 status event code: A-5-5-R10-R11-asn-PN2301

PN2301 Change of applicant

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