JPS5631369A - Direct current to direct current converting type power source device - Google Patents

Direct current to direct current converting type power source device

Info

Publication number
JPS5631369A
JPS5631369A JP10696779A JP10696779A JPS5631369A JP S5631369 A JPS5631369 A JP S5631369A JP 10696779 A JP10696779 A JP 10696779A JP 10696779 A JP10696779 A JP 10696779A JP S5631369 A JPS5631369 A JP S5631369A
Authority
JP
Japan
Prior art keywords
output
direct current
circuit
output voltage
currents
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.)
Pending
Application number
JP10696779A
Other languages
Japanese (ja)
Inventor
Yoichi Ueki
Toshifumi Washio
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10696779A priority Critical patent/JPS5631369A/en
Publication of JPS5631369A publication Critical patent/JPS5631369A/en
Pending 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
    • H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—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 with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop

Abstract

PURPOSE:To enable the use of elements, which need not have allowance to a rated value, by a method wherein an overcurrent detecting circuit is formed which compares voltage corresponding to currents at the primary side of a transformer and a DC voltage level being proportional to output voltage. CONSTITUTION:Output from an oscillation circuit OSC controls a main switching element ST through a pulse width control circuit I and a driver circuit II, an output voltage is generated at the secondary side of the transformer TR while the pulse width control circuit I is controlled by output from an output voltage detecting circuit IV, and output voltage is stabilized. Output from the output voltage detecting circuit IV and currents at the primary side of the transformer TR are provided to a comparator COM2 of the overcurrent detecting circuit III to control the driver circuit II. Thus, since currents can instantaneously be reduced when the output from the OSC becomes to overload and the currents exceed a rated value, the elements having no allowance are used, and reliability can be maintained.
JP10696779A 1979-08-22 1979-08-22 Direct current to direct current converting type power source device Pending JPS5631369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10696779A JPS5631369A (en) 1979-08-22 1979-08-22 Direct current to direct current converting type power source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10696779A JPS5631369A (en) 1979-08-22 1979-08-22 Direct current to direct current converting type power source device

Publications (1)

Publication Number Publication Date
JPS5631369A true JPS5631369A (en) 1981-03-30

Family

ID=14447077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10696779A Pending JPS5631369A (en) 1979-08-22 1979-08-22 Direct current to direct current converting type power source device

Country Status (1)

Country Link
JP (1) JPS5631369A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001048A1 (en) * 1984-07-27 1986-02-13 Sms Advanced Power, Inc. Switch-mode power supply
JPS61244271A (en) * 1985-04-22 1986-10-30 Micron Kiki Kk Switching regulator
JPS6285671A (en) * 1985-10-11 1987-04-20 Fuji Xerox Co Ltd Switching type power unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001048A1 (en) * 1984-07-27 1986-02-13 Sms Advanced Power, Inc. Switch-mode power supply
US4713740A (en) * 1984-07-27 1987-12-15 Sms Advanced Power, Inc. Switch-mode power supply
JPS61244271A (en) * 1985-04-22 1986-10-30 Micron Kiki Kk Switching regulator
JPS6285671A (en) * 1985-10-11 1987-04-20 Fuji Xerox Co Ltd Switching type power unit

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