JPS5656173A - Stabilized switching power source circuit - Google Patents

Stabilized switching power source circuit

Info

Publication number
JPS5656173A
JPS5656173A JP13274979A JP13274979A JPS5656173A JP S5656173 A JPS5656173 A JP S5656173A JP 13274979 A JP13274979 A JP 13274979A JP 13274979 A JP13274979 A JP 13274979A JP S5656173 A JPS5656173 A JP S5656173A
Authority
JP
Japan
Prior art keywords
circuit
pulse width
input voltage
output
signal
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
JP13274979A
Other languages
Japanese (ja)
Other versions
JPS5924628B2 (en
Inventor
Akira Konno
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP13274979A priority Critical patent/JPS5924628B2/en
Publication of JPS5656173A publication Critical patent/JPS5656173A/en
Publication of JPS5924628B2 publication Critical patent/JPS5924628B2/en
Expired 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

Landscapes

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

Abstract

PURPOSE:To prevent damage of a switching element by an output signal from an input voltage detecting means and a pulse width from a pulse width modulation signal becoming higher than predetermined values. CONSTITUTION:A stable DC output is obtained by a pulse signal outputted from a pulse width modulator circuit 10 having a pulse width responsive to the output voltage at an output terminal 7 at normal time under the control of a switching element 4. A pulse signal from the output terminal 10c of the circuit 10 is controlled, when a malfunction such as short-circuit of a load occurs, by a voltage responsive to the input voltage supplied from input voltage detecting means having a detecting circuit 14, a zener diode 15 and a diode 16 to the modulation signal input terminal 10a of the circuit 10, and the pulse width is limited to operate the element 4 within safety operating range. Thus, since the conducting time of the element 4 is controlled in response to the input voltage, the element 4 cannot be broken.
JP13274979A 1979-10-15 1979-10-15 Switching stabilized power supply circuit Expired JPS5924628B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13274979A JPS5924628B2 (en) 1979-10-15 1979-10-15 Switching stabilized power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13274979A JPS5924628B2 (en) 1979-10-15 1979-10-15 Switching stabilized power supply circuit

Publications (2)

Publication Number Publication Date
JPS5656173A true JPS5656173A (en) 1981-05-18
JPS5924628B2 JPS5924628B2 (en) 1984-06-11

Family

ID=15088672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13274979A Expired JPS5924628B2 (en) 1979-10-15 1979-10-15 Switching stabilized power supply circuit

Country Status (1)

Country Link
JP (1) JPS5924628B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5844614U (en) * 1981-08-19 1983-03-25 サンケン電気株式会社 Current feedback transistor switching circuit
JPS6412863A (en) * 1987-07-06 1989-01-17 Fuji Xerox Co Ltd Switching system dc constant-voltage regulated power supply device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5844614U (en) * 1981-08-19 1983-03-25 サンケン電気株式会社 Current feedback transistor switching circuit
JPH0412792Y2 (en) * 1981-08-19 1992-03-26
JPS6412863A (en) * 1987-07-06 1989-01-17 Fuji Xerox Co Ltd Switching system dc constant-voltage regulated power supply device

Also Published As

Publication number Publication date
JPS5924628B2 (en) 1984-06-11

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