JPS56101221A - Circuit system of power supply conversion - Google Patents

Circuit system of power supply conversion

Info

Publication number
JPS56101221A
JPS56101221A JP427180A JP427180A JPS56101221A JP S56101221 A JPS56101221 A JP S56101221A JP 427180 A JP427180 A JP 427180A JP 427180 A JP427180 A JP 427180A JP S56101221 A JPS56101221 A JP S56101221A
Authority
JP
Japan
Prior art keywords
output
power supply
supply conversion
output voltage
switch
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
JP427180A
Other languages
Japanese (ja)
Inventor
Kazuo Hamasato
Shogo Usuda
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP427180A priority Critical patent/JPS56101221A/en
Publication of JPS56101221A publication Critical patent/JPS56101221A/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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To obtain an output voltage broader to the input voltage with the same circuit, by combining the operation of a step-up type power supply conversion circuit with that of a step-down type power supply conversion circuit. CONSTITUTION:The output of a comparator CP is at low level when the output voltage Vout is lower than the input voltage Vin, and the output of a comparison controller CCP is fed to the 1st switch S1 via an OR gate G1 for on/off operation, the duty ratio is changed with the change in the referece voltage Vr, and the duty ratio is determined when in agreement. Further, when the output voltage Vout determined when in agreement. Further, when the output voltage Vout is higher than the input voltage Vin, the output of a comparator CP is at high level, this is given to the 1st switch S1 to turn on it. The AND gate G2 is on, the output of the comparison controller CCP is fed to the 2nd switch S2 for on/off operation, and when the reference voltage Vr and the output voltage Vout are in coincidence, the duty ratio is determined.
JP427180A 1980-01-18 1980-01-18 Circuit system of power supply conversion Pending JPS56101221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP427180A JPS56101221A (en) 1980-01-18 1980-01-18 Circuit system of power supply conversion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP427180A JPS56101221A (en) 1980-01-18 1980-01-18 Circuit system of power supply conversion

Publications (1)

Publication Number Publication Date
JPS56101221A true JPS56101221A (en) 1981-08-13

Family

ID=11579872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP427180A Pending JPS56101221A (en) 1980-01-18 1980-01-18 Circuit system of power supply conversion

Country Status (1)

Country Link
JP (1) JPS56101221A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515444A1 (en) * 1981-10-22 1983-04-29 Western Electric Co REGULATOR WITH CUTTING OVERFLOW-DEVOLTOR WITHOUT TRANSFORMER
JP2005045943A (en) * 2003-07-23 2005-02-17 Matsushita Electric Ind Co Ltd Step-up/step-down dc-dc converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515444A1 (en) * 1981-10-22 1983-04-29 Western Electric Co REGULATOR WITH CUTTING OVERFLOW-DEVOLTOR WITHOUT TRANSFORMER
JP2005045943A (en) * 2003-07-23 2005-02-17 Matsushita Electric Ind Co Ltd Step-up/step-down dc-dc converter

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