JPS57156668A - Conversion of dc - Google Patents

Conversion of dc

Info

Publication number
JPS57156668A
JPS57156668A JP4099281A JP4099281A JPS57156668A JP S57156668 A JPS57156668 A JP S57156668A JP 4099281 A JP4099281 A JP 4099281A JP 4099281 A JP4099281 A JP 4099281A JP S57156668 A JPS57156668 A JP S57156668A
Authority
JP
Japan
Prior art keywords
state
state period
output voltage
voltage
transformer
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
JP4099281A
Other languages
Japanese (ja)
Inventor
Mamoru Tsuruya
Eiji Yokohara
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.)
Sanken Electric Co Ltd
Original Assignee
Sanken Electric 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 Sanken Electric Co Ltd filed Critical Sanken Electric Co Ltd
Priority to JP4099281A priority Critical patent/JPS57156668A/en
Publication of JPS57156668A publication Critical patent/JPS57156668A/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

Landscapes

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

Abstract

PURPOSE:To miniaturize a transformer by a method wherein the switching device ON-state period is roughly in inverse proportion to an input voltage and the OFF-state period is controlled in response to an output voltage or output current detected. CONSTITUTION:An ON-state width controlling circuit 13 detects an input voltage and yields an ON-state pulse signal the width thereof roughly in inverse proportion to the input voltage. An OFF-state width controlling circuit 14 detects an output voltage and adjust the switching device 4 base signal for a prolonged OFF-state period when the output voltage is too high and for a shortened OFF- state period when the output voltage is too low. Accordingly, control is effected so that the integrated quantity of the voltage applied to the primary winding 3 of a transformer 2 during an ON-state period is roughly constant, and the output voltage is also kept constant by controlling the length of the OFF-state period. This miniaturizes the transformer and enables the use of a low withstand voltage switching device.
JP4099281A 1981-03-20 1981-03-20 Conversion of dc Pending JPS57156668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4099281A JPS57156668A (en) 1981-03-20 1981-03-20 Conversion of dc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4099281A JPS57156668A (en) 1981-03-20 1981-03-20 Conversion of dc

Publications (1)

Publication Number Publication Date
JPS57156668A true JPS57156668A (en) 1982-09-28

Family

ID=12595922

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4099281A Pending JPS57156668A (en) 1981-03-20 1981-03-20 Conversion of dc

Country Status (1)

Country Link
JP (1) JPS57156668A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002035692A1 (en) * 2000-10-27 2002-05-02 Koninklijke Philips Electronics N.V. Converter control
KR100581042B1 (en) * 1998-02-18 2006-05-16 세이코 인스트루 가부시키가이샤 Switching regulator control circuit of pfm system and switching regulator thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5153220A (en) * 1974-11-05 1976-05-11 Sharp Kk SUITSUCHINGUHOSHI KITEIDENATSUDENGENSOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5153220A (en) * 1974-11-05 1976-05-11 Sharp Kk SUITSUCHINGUHOSHI KITEIDENATSUDENGENSOCHI

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100581042B1 (en) * 1998-02-18 2006-05-16 세이코 인스트루 가부시키가이샤 Switching regulator control circuit of pfm system and switching regulator thereof
WO2002035692A1 (en) * 2000-10-27 2002-05-02 Koninklijke Philips Electronics N.V. Converter control

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