FR2447629A1 - Circuit de protection contre les surintensites pour transistors de puissance - Google Patents

Circuit de protection contre les surintensites pour transistors de puissance

Info

Publication number
FR2447629A1
FR2447629A1 FR8001871A FR8001871A FR2447629A1 FR 2447629 A1 FR2447629 A1 FR 2447629A1 FR 8001871 A FR8001871 A FR 8001871A FR 8001871 A FR8001871 A FR 8001871A FR 2447629 A1 FR2447629 A1 FR 2447629A1
Authority
FR
France
Prior art keywords
transistor
protected
protection circuit
overcurrent protection
power transistors
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.)
Granted
Application number
FR8001871A
Other languages
English (en)
Other versions
FR2447629B1 (fr
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of FR2447629A1 publication Critical patent/FR2447629A1/fr
Application granted granted Critical
Publication of FR2447629B1 publication Critical patent/FR2447629B1/fr
Expired legal-status Critical Current

Links

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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'INVENTION CONCERNE UN CIRCUIT DE PROTECTION CONTRE LES SURINTENSITES POUR TRANSISTORS DE PUISSANCE. UN TRANSISTOR DE PUISSANCE Q2, Q4 EST PROTEGE PAR UN CIRCUIT COMPRENANT UN TRANSISTOR DE REFERENCE Q7, Q5 QUI EST THERMIQUEMENT COUPLE AU TRANSISTOR A PROTEGER, UN MOYEN IS1, Q8 RELIANT LE TRANSISTOR DE REFERENCE DE FACON QU'IL CONDUISE A UN NIVEAU PREDETERMINE DE COURANT DANS SON TRAJET COLLECTEUR-EMETTEUR, UN COMPARATEUR DIFFERENTIEL Q10, Q11; Q12, Q13 QUI COMPARE LA TENSION EMETTEUR-BASE DU TRANSISTOR A PROTEGER A CELLE DU TRANSISTOR DE REFERENCE ET PRODUIT UNE INDICATION D'UNE SITUATION DE SURINTENSITE A CHAQUE FOIS QU'IL EXISTE UNE DIFFERENCE SPECIFIEE ENTRE LES TENSIONS EMETTEUR-BASE DU TRANSISTOR A PROTEGER ET DU TRANSISTOR DE REFERENCE, ET UN MOYEN Q1, Q3 REPONDANT A CETTE INDICATION EN LIMITANT LE COURANT DE BASE DU TRANSISTOR A PROTEGER. LE CIRCUIT PROTECTEUR SELON L'INVENTION EVITE L'EMPLOI D'UNE RESISTANCE DETECTRICE DE COURANT DANS LE TRAJET COLLECTEUR-EMETTEUR DU TRANSISTOR A PROTEGER, COMME C'ETAIT LE CAS DANS LA TECHNIQUE ANTERIEURE.
FR8001871A 1979-01-29 1980-01-29 Circuit de protection contre les surintensites pour transistors de puissance Expired FR2447629B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/007,499 US4225897A (en) 1979-01-29 1979-01-29 Overcurrent protection circuit for power transistor

Publications (2)

Publication Number Publication Date
FR2447629A1 true FR2447629A1 (fr) 1980-08-22
FR2447629B1 FR2447629B1 (fr) 1985-10-04

Family

ID=21726554

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8001871A Expired FR2447629B1 (fr) 1979-01-29 1980-01-29 Circuit de protection contre les surintensites pour transistors de puissance

Country Status (13)

Country Link
US (1) US4225897A (fr)
JP (1) JPS55102911A (fr)
KR (1) KR830001456B1 (fr)
AT (1) AT392375B (fr)
AU (1) AU527758B2 (fr)
DE (1) DE3003123A1 (fr)
ES (1) ES8204565A1 (fr)
FI (1) FI73548C (fr)
FR (1) FR2447629B1 (fr)
GB (1) GB2042297B (fr)
IT (1) IT1130234B (fr)
NZ (1) NZ192727A (fr)
SE (1) SE441881B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57124909A (en) * 1981-01-27 1982-08-04 Toshiba Corp Output transistor protection circuit
US4321648A (en) * 1981-02-25 1982-03-23 Rca Corporation Over-current protection circuits for power transistors
US4481553A (en) * 1982-04-05 1984-11-06 General Electric Company Protection circuit
DE3238880A1 (de) * 1982-10-21 1984-04-26 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung
JPH0630543B2 (ja) * 1987-01-13 1994-04-20 株式会社東芝 出力回路の異常検出報知回路
JPS63268432A (ja) * 1987-04-27 1988-11-07 Mitsubishi Electric Corp 短絡保護回路
US5061902A (en) * 1990-10-03 1991-10-29 International Business Machines Corp. Linear amplifier
IT1244209B (it) * 1990-12-20 1994-07-08 Sgs Thomson Microelectronics Circuito di controllo di caratteristiche tensione/corrente particolarmente per la protezione di transistori di potenza
US5485341A (en) * 1992-09-21 1996-01-16 Kabushiki Kaisha Toshiba Power transistor overcurrent protection circuit
EP0782236A1 (fr) * 1995-12-29 1997-07-02 Co.Ri.M.Me. Consorzio Per La Ricerca Sulla Microelettronica Nel Mezzogiorno Circuit de protection contre les surintensités dans des dispositifs électroniques de puissance et méthode correspondante
DE10128772B4 (de) * 2001-06-13 2009-10-15 Infineon Technologies Ag Verfahren und Vorrichtung zur Einschaltstrombegrenzung in Gegentaktverstärkerendstufen
WO2015080599A1 (fr) * 2013-11-26 2015-06-04 Powerbyproxi Limited Circuit de protection contre les surintensités
CN113273079B (zh) * 2019-01-10 2024-03-22 瑞典爱立信有限公司 偏置电路和功率放大器电路

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924159A (en) * 1974-10-04 1975-12-02 Rca Corp Amplifier protection system
FR2301861A1 (fr) * 1975-02-24 1976-09-17 Rca Corp Circuit de regulation de courant
FR2301862A1 (fr) * 1975-02-24 1976-09-17 Rca Corp Diviseur de courant
US4021701A (en) * 1975-12-08 1977-05-03 Motorola, Inc. Transistor protection circuit
US4122401A (en) * 1977-07-14 1978-10-24 National Semiconductor Corporation High efficiency power amplifier circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1265157A (fr) * 1968-09-27 1972-03-01
GB1467057A (en) * 1973-05-24 1977-03-16 Rca Corp Amplifier with over-current protection
US3938008A (en) * 1974-09-18 1976-02-10 International Business Machines Corporation Common bus driver complementary protect circuit
GB1537484A (en) * 1976-01-27 1978-12-29 Rca Corp Transistor amplifier with over-current prevention circuitry
US4078207A (en) * 1977-01-07 1978-03-07 Rca Corporation Push-pull transistor amplifier with driver circuitry providing over-current protection

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924159A (en) * 1974-10-04 1975-12-02 Rca Corp Amplifier protection system
FR2301861A1 (fr) * 1975-02-24 1976-09-17 Rca Corp Circuit de regulation de courant
FR2301862A1 (fr) * 1975-02-24 1976-09-17 Rca Corp Diviseur de courant
US4063149A (en) * 1975-02-24 1977-12-13 Rca Corporation Current regulating circuits
US4021701A (en) * 1975-12-08 1977-05-03 Motorola, Inc. Transistor protection circuit
US4122401A (en) * 1977-07-14 1978-10-24 National Semiconductor Corporation High efficiency power amplifier circuit

Also Published As

Publication number Publication date
DE3003123A1 (de) 1980-08-07
GB2042297A (en) 1980-09-17
FI73548C (fi) 1987-10-09
DE3003123C2 (fr) 1987-07-09
ES488056A0 (es) 1982-04-01
NZ192727A (en) 1983-03-15
FI800176A (fi) 1980-07-30
AT392375B (de) 1991-03-25
AU5481480A (en) 1980-08-07
IT1130234B (it) 1986-06-11
US4225897A (en) 1980-09-30
SE8000492L (sv) 1980-07-30
IT8019490A0 (it) 1980-01-25
AU527758B2 (en) 1983-03-24
JPS6260847B2 (fr) 1987-12-18
KR830002446A (ko) 1983-05-28
SE441881B (sv) 1985-11-11
ES8204565A1 (es) 1982-04-01
KR830001456B1 (ko) 1983-07-29
ATA44580A (de) 1990-08-15
JPS55102911A (en) 1980-08-06
GB2042297B (en) 1983-03-23
FI73548B (fi) 1987-06-30
FR2447629B1 (fr) 1985-10-04

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Legal Events

Date Code Title Description
ST Notification of lapse