KR970008830B1 - Flyback converter of zero voltage at low strees of voltage - Google Patents

Flyback converter of zero voltage at low strees of voltage Download PDF

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Publication number
KR970008830B1
KR970008830B1 KR94020225A KR19940020225A KR970008830B1 KR 970008830 B1 KR970008830 B1 KR 970008830B1 KR 94020225 A KR94020225 A KR 94020225A KR 19940020225 A KR19940020225 A KR 19940020225A KR 970008830 B1 KR970008830 B1 KR 970008830B1
Authority
KR
South Korea
Prior art keywords
voltage
switching
transistor
flyback converter
zero
Prior art date
Application number
KR94020225A
Other languages
Korean (ko)
Other versions
KR960009353A (en
Inventor
Dong-Young Hu
Original Assignee
Daewoo Electronics 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 Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Priority to KR94020225A priority Critical patent/KR970008830B1/en
Publication of KR960009353A publication Critical patent/KR960009353A/en
Application granted granted Critical
Publication of KR970008830B1 publication Critical patent/KR970008830B1/en

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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
    • H02M1/40—Means for preventing magnetic saturation
    • 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
    • H02M1/083—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the ignition at the zero crossing of the voltage or the current
    • 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
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

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

Abstract

This invention provides a zero voltage switching dummy resonance flyback converter with low voltage stress that can minimize the switching loss by completely dropping the voltage to zero when switching. In this converter, power supply magnetizing current of a transformer, increased while a switching transistor is being turned on, is applied to a condenser via the transformer's second diode as the switching transistor is turned off, the condenser is connected to the transistor in parallel, and the transistor is connected to the diode.
KR94020225A 1994-08-17 1994-08-17 Flyback converter of zero voltage at low strees of voltage KR970008830B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94020225A KR970008830B1 (en) 1994-08-17 1994-08-17 Flyback converter of zero voltage at low strees of voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94020225A KR970008830B1 (en) 1994-08-17 1994-08-17 Flyback converter of zero voltage at low strees of voltage

Publications (2)

Publication Number Publication Date
KR960009353A KR960009353A (en) 1996-03-22
KR970008830B1 true KR970008830B1 (en) 1997-05-29

Family

ID=19390489

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94020225A KR970008830B1 (en) 1994-08-17 1994-08-17 Flyback converter of zero voltage at low strees of voltage

Country Status (1)

Country Link
KR (1) KR970008830B1 (en)

Also Published As

Publication number Publication date
KR960009353A (en) 1996-03-22

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