JPS5568880A - Multi-output switching regulator - Google Patents

Multi-output switching regulator

Info

Publication number
JPS5568880A
JPS5568880A JP14230778A JP14230778A JPS5568880A JP S5568880 A JPS5568880 A JP S5568880A JP 14230778 A JP14230778 A JP 14230778A JP 14230778 A JP14230778 A JP 14230778A JP S5568880 A JPS5568880 A JP S5568880A
Authority
JP
Japan
Prior art keywords
output
transistor
period
switching regulator
equation
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
JP14230778A
Other languages
Japanese (ja)
Inventor
Motoyoshi Fujita
Kozo Hirayama
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP14230778A priority Critical patent/JPS5568880A/en
Publication of JPS5568880A publication Critical patent/JPS5568880A/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
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs

Landscapes

  • Dc-Dc Converters (AREA)

Abstract

PURPOSE: To take out a plurality of stable outputs from one pulse-driving power supply transformer by tightly coupling inductances in two output circuits each other, and by constituting a particular relationship between the output winding and the output circuits.
CONSTITUTION: Let the induced voltage per one turn of the winding of a transformer T1 be ep. Then, an equation e1=N1ep, e2=N2ep is obtained. The voltage equation of an output circuit during the period a transistor Q1 is on is e1=ED11+ EL1+E01, e2=ED21+EL2+E02, and e1-EL1=N1ep-EL1= E01+ED11, e2-EL2=N2ep -EL2=E02+ED21 is obtained. Since inductances L1 and L2 are tightly coupled, EL2= EL1NL2/NL1 is obtained, thus NL2/NL1=(E02+ED21)/(E01+ED11). During the period the transistor Q1 is off, NL2/NL1=(E02+ED22)/(E01+ED12) is likewise obtained. If the voltage drops at individual diodes are equal, N2/N1≈NL2/NL1≈(E02+ED2)/(E01+ ED1) is obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP14230778A 1978-11-20 1978-11-20 Multi-output switching regulator Pending JPS5568880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14230778A JPS5568880A (en) 1978-11-20 1978-11-20 Multi-output switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14230778A JPS5568880A (en) 1978-11-20 1978-11-20 Multi-output switching regulator

Publications (1)

Publication Number Publication Date
JPS5568880A true JPS5568880A (en) 1980-05-23

Family

ID=15312314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14230778A Pending JPS5568880A (en) 1978-11-20 1978-11-20 Multi-output switching regulator

Country Status (1)

Country Link
JP (1) JPS5568880A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422139A (en) * 1982-03-29 1983-12-20 Rockwell International Corporation Transformer coupled up-down converter
US5008794A (en) * 1989-12-21 1991-04-16 Power Integrations, Inc. Regulated flyback converter with spike suppressing coupled inductors
WO2003023945A2 (en) * 2001-09-07 2003-03-20 Power-One, Inc. Power converter having regulated dual outputs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422139A (en) * 1982-03-29 1983-12-20 Rockwell International Corporation Transformer coupled up-down converter
US5008794A (en) * 1989-12-21 1991-04-16 Power Integrations, Inc. Regulated flyback converter with spike suppressing coupled inductors
WO2003023945A2 (en) * 2001-09-07 2003-03-20 Power-One, Inc. Power converter having regulated dual outputs
WO2003023945A3 (en) * 2001-09-07 2003-10-09 Power One Inc Power converter having regulated dual outputs

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