JPS5717037A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPS5717037A
JPS5717037A JP9103680A JP9103680A JPS5717037A JP S5717037 A JPS5717037 A JP S5717037A JP 9103680 A JP9103680 A JP 9103680A JP 9103680 A JP9103680 A JP 9103680A JP S5717037 A JPS5717037 A JP S5717037A
Authority
JP
Japan
Prior art keywords
voltage
output
amplifier
transformer
flyback
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
JP9103680A
Other languages
Japanese (ja)
Other versions
JPS631028B2 (en
Inventor
Yoshikatsu Sakai
Atsuhiro Kitami
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP9103680A priority Critical patent/JPS5717037A/en
Publication of JPS5717037A publication Critical patent/JPS5717037A/en
Publication of JPS631028B2 publication Critical patent/JPS631028B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

PURPOSE:To protect the overvoltage and overcurrent for a switching regulator having a transformer, by monitoring the mean value of the flyback voltage for limitation and at the same time monitoring the primary current of the transformer to change the limit value of the flyback voltage. CONSTITUTION:The input voltage Ei is applied to the primary winding n1 of a transformer 1, and the output voltage EO is supplied to a load RL from the induced voltage of the secondary winding n2 by turning on and off a transistor TR2. At the same time, the voltage Ef is supplied to an error amplifier 5 through the secondary winding n3, and the TR2 is turned on and off by the output Ea and via a driving circuit 8. Thus control is given to obtain a coincidence between the voltage Ef and the reference voltage Es to secure a constant voltage EO. In case the flyback voltage Efl increases owing to a fault of the feedback circuit of the amplifier 5, the output Eb of a differential amplifier 10 is selected 11 to limit the output voltage. When the primary current increases due to a short circuit of the load RL, the output voltage is limited by the amplifier 10 and the voltage drop EC of the resistance 12 via the TR1.
JP9103680A 1980-07-03 1980-07-03 Switching regulator Granted JPS5717037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9103680A JPS5717037A (en) 1980-07-03 1980-07-03 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9103680A JPS5717037A (en) 1980-07-03 1980-07-03 Switching regulator

Publications (2)

Publication Number Publication Date
JPS5717037A true JPS5717037A (en) 1982-01-28
JPS631028B2 JPS631028B2 (en) 1988-01-11

Family

ID=14015268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9103680A Granted JPS5717037A (en) 1980-07-03 1980-07-03 Switching regulator

Country Status (1)

Country Link
JP (1) JPS5717037A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460713A (en) * 1992-10-02 1995-10-24 Mitsubishi Oil Co., Ltd. Process for producing low viscosity lubricating base oil having high viscosity index
US5462650A (en) * 1992-10-02 1995-10-31 Mitsubishi Oil Co., Ltd Process for producing low viscosity lubricating base oil having high viscosity index
EP0991170A1 (en) * 1998-09-28 2000-04-05 STMicroelectronics S.r.l. Integrated protection from the effects of a short circuit of the output of a flyback converter
EP2480049A3 (en) * 2011-01-20 2013-07-03 OSRAM GmbH Power supply device for light sources

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460713A (en) * 1992-10-02 1995-10-24 Mitsubishi Oil Co., Ltd. Process for producing low viscosity lubricating base oil having high viscosity index
US5462650A (en) * 1992-10-02 1995-10-31 Mitsubishi Oil Co., Ltd Process for producing low viscosity lubricating base oil having high viscosity index
EP0991170A1 (en) * 1998-09-28 2000-04-05 STMicroelectronics S.r.l. Integrated protection from the effects of a short circuit of the output of a flyback converter
US6061257A (en) * 1998-09-28 2000-05-09 Stmicroelectronics S.R.L. Wholly integrated protection from the effects of a short circuit of the output of a flyback converter
EP2480049A3 (en) * 2011-01-20 2013-07-03 OSRAM GmbH Power supply device for light sources

Also Published As

Publication number Publication date
JPS631028B2 (en) 1988-01-11

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