JPS55141973A - Control system of switching power supply device - Google Patents

Control system of switching power supply device

Info

Publication number
JPS55141973A
JPS55141973A JP4871579A JP4871579A JPS55141973A JP S55141973 A JPS55141973 A JP S55141973A JP 4871579 A JP4871579 A JP 4871579A JP 4871579 A JP4871579 A JP 4871579A JP S55141973 A JPS55141973 A JP S55141973A
Authority
JP
Japan
Prior art keywords
output
pulse length
control
load
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.)
Pending
Application number
JP4871579A
Other languages
Japanese (ja)
Inventor
Kazuyuki Arai
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.)
Shindengen Electric Manufacturing Co Ltd
Original Assignee
Shindengen Electric Manufacturing 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 Shindengen Electric Manufacturing Co Ltd filed Critical Shindengen Electric Manufacturing Co Ltd
Priority to JP4871579A priority Critical patent/JPS55141973A/en
Publication of JPS55141973A publication Critical patent/JPS55141973A/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

Landscapes

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

Abstract

PURPOSE:To gain stabilized output in the range from complete no load to a full load by a method wherein pulse length control is performed at the current fluctuating time in the stationary state, while in the state of choke cut-off or overcurrent, pulse length is kept constant to perform frequency control. CONSTITUTION:The conversion main circuit (not illustrated), wherein two transistors, which alternately turn on-off, are connected with the primary winding of a transformer to gain DC output by rectifying the secondary winding output, is on- off controlled by the output of the AND circuits 2, 3 of the control section of said transistors. At the time of stationary operation of the main circuit, the fluctuation is met with pulse length control by the output voltage detection and comparison amplifier AMP 1, the load current detection and comparison amplifier AMP 2 as well as by the oscillator. When the output of AMP 1 or of AMP 2 exceeds the prescribed value fluctuating value, the oscillation frequency of OSC fluctuates to shift to the frequency control of the fixed pulse length.
JP4871579A 1979-04-20 1979-04-20 Control system of switching power supply device Pending JPS55141973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4871579A JPS55141973A (en) 1979-04-20 1979-04-20 Control system of switching power supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4871579A JPS55141973A (en) 1979-04-20 1979-04-20 Control system of switching power supply device

Publications (1)

Publication Number Publication Date
JPS55141973A true JPS55141973A (en) 1980-11-06

Family

ID=12810989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4871579A Pending JPS55141973A (en) 1979-04-20 1979-04-20 Control system of switching power supply device

Country Status (1)

Country Link
JP (1) JPS55141973A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634186U (en) * 1986-06-25 1988-01-12
JPH04150763A (en) * 1990-10-11 1992-05-25 Toyo Electric Mfg Co Ltd Overcurrent limiting circuit for dc-dc converter
JP2016063710A (en) * 2014-09-22 2016-04-25 コーセル株式会社 Switching power supply

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634186U (en) * 1986-06-25 1988-01-12
JPH04150763A (en) * 1990-10-11 1992-05-25 Toyo Electric Mfg Co Ltd Overcurrent limiting circuit for dc-dc converter
JP2016063710A (en) * 2014-09-22 2016-04-25 コーセル株式会社 Switching power supply

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