JPS57132764A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPS57132764A
JPS57132764A JP1616181A JP1616181A JPS57132764A JP S57132764 A JPS57132764 A JP S57132764A JP 1616181 A JP1616181 A JP 1616181A JP 1616181 A JP1616181 A JP 1616181A JP S57132764 A JPS57132764 A JP S57132764A
Authority
JP
Japan
Prior art keywords
voltage
capacitor
transistor
transformer
switching regulator
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
JP1616181A
Other languages
Japanese (ja)
Inventor
Yasuto Osada
Kenjun Nishida
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1616181A priority Critical patent/JPS57132764A/en
Publication of JPS57132764A publication Critical patent/JPS57132764A/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
    • H02M3/338—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 in a self-oscillating arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To protect a switching regulator at the time of shortcircuiting a load by connecting a rectifier and a capacitor to the base coil of a transistor, comparing the voltage of the capacitor with the preset voltage to control the current of the base coil. CONSTITUTION:The output of a rectifier DS2 is controlled ON or OFF by a switching circuit which is composed of a transistor Q2 and primary coils L1, L2 of a transformer T2, thereby obtaining an output at the secondary side of the transformer. A diode D9 and a capacitor C11 are connected to the base coil L2 of the transformer T2 so that, when the voltage of the condenser C11 is higher than the voltage of a zener diode ZD1, a current flows from the coil L2 to the transistor Q3. Accordingly, the output voltage is lowered at the time of shortcircuiting a load, and after the transistor Q2 is interrupted, it is restarted when the voltage of the capacitor C11 is sufficiently reduced. Therefore, the quantity of heat can be reduced, thereby completely protecting a switching regulator.
JP1616181A 1981-02-04 1981-02-04 Switching regulator Pending JPS57132764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1616181A JPS57132764A (en) 1981-02-04 1981-02-04 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1616181A JPS57132764A (en) 1981-02-04 1981-02-04 Switching regulator

Publications (1)

Publication Number Publication Date
JPS57132764A true JPS57132764A (en) 1982-08-17

Family

ID=11908778

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1616181A Pending JPS57132764A (en) 1981-02-04 1981-02-04 Switching regulator

Country Status (1)

Country Link
JP (1) JPS57132764A (en)

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