GB2473407A - Self oscillating flyback circuit - Google Patents

Self oscillating flyback circuit Download PDF

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Publication number
GB2473407A
GB2473407A GB1100679A GB201100679A GB2473407A GB 2473407 A GB2473407 A GB 2473407A GB 1100679 A GB1100679 A GB 1100679A GB 201100679 A GB201100679 A GB 201100679A GB 2473407 A GB2473407 A GB 2473407A
Authority
GB
United Kingdom
Prior art keywords
circuit
self oscillating
signal
feedback
switching transistor
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.)
Granted
Application number
GB1100679A
Other versions
GB2473407B (en
GB201100679D0 (en
Inventor
Mark Wayne Huggins
Martin Wong
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.)
Xipower Ltd
Original Assignee
Xipower 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 Xipower Ltd filed Critical Xipower Ltd
Publication of GB201100679D0 publication Critical patent/GB201100679D0/en
Publication of GB2473407A publication Critical patent/GB2473407A/en
Application granted granted Critical
Publication of GB2473407B publication Critical patent/GB2473407B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H02M3/338—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 in a self-oscillating arrangement
    • H02M3/3381—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 in a self-oscillating arrangement using a single commutation path
    • 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
    • H02M3/338—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 in a self-oscillating arrangement
    • H02M3/3385—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 in a self-oscillating arrangement with automatic control of output voltage or current

Landscapes

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

Abstract

A self oscillating flyback circuit (101) suitable for use in switch mode power supplies. The circuit has an input (103), a switching transistor (117), a primary winding (109) for receiving energy from a primary power source, a feedback circuit comprising a feedback winding (111) for providing a feedback signal to the base of the switching transistor and an inductor winding (113) for transferring energy to an output (105). The input has an active component (115) which modulates the input signal and provides a controlled signal to the circuit. The feedback circuit also has a second active component (119) which modulates the signal to the base of the switching transistor. The self oscillating flyback converter can enhance and extend the primary switch device drive current and voltage control resulting in a significant increase in operational input voltage and can provide a wide operational input voltage range to the class of switch mode power converter known in the art as Self oscillating flyback power converters.
GB1100679.8A 2008-06-23 2009-06-19 Self oscillating flyback circuit Active GB2473407B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0811483.7A GB0811483D0 (en) 2008-06-23 2008-06-23 Improvements in and relating to self oscillating flyback circuits
PCT/GB2009/001555 WO2009156715A1 (en) 2008-06-23 2009-06-19 Self oscillating flyback circuit

Publications (3)

Publication Number Publication Date
GB201100679D0 GB201100679D0 (en) 2011-03-02
GB2473407A true GB2473407A (en) 2011-03-09
GB2473407B GB2473407B (en) 2012-08-01

Family

ID=39683003

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0811483.7A Ceased GB0811483D0 (en) 2008-06-23 2008-06-23 Improvements in and relating to self oscillating flyback circuits
GB1100679.8A Active GB2473407B (en) 2008-06-23 2009-06-19 Self oscillating flyback circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0811483.7A Ceased GB0811483D0 (en) 2008-06-23 2008-06-23 Improvements in and relating to self oscillating flyback circuits

Country Status (2)

Country Link
GB (2) GB0811483D0 (en)
WO (1) WO2009156715A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8947894B2 (en) * 2013-04-05 2015-02-03 Infineon Technologies Austria Ag Switched mode power supply including a flyback converter with primary side control

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3602801A (en) * 1970-04-27 1971-08-31 Us Navy Switching voltage and current regulator controller
EP0477596A2 (en) * 1990-09-26 1992-04-01 Siemens Aktiengesellschaft Österreich DC flyback converter circuit
EP0650112A2 (en) * 1993-10-20 1995-04-26 Daimler-Benz Aerospace Aktiengesellschaft Constant-current source
US5668704A (en) * 1994-08-09 1997-09-16 Funai Electric Co., Ltd. Self-exciting flyback converter
US20060133117A1 (en) * 2003-07-15 2006-06-22 Genannt Berghegger Ralf S Simple switched-mode power supply with current and voltage limitation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3602801A (en) * 1970-04-27 1971-08-31 Us Navy Switching voltage and current regulator controller
EP0477596A2 (en) * 1990-09-26 1992-04-01 Siemens Aktiengesellschaft Österreich DC flyback converter circuit
EP0650112A2 (en) * 1993-10-20 1995-04-26 Daimler-Benz Aerospace Aktiengesellschaft Constant-current source
US5668704A (en) * 1994-08-09 1997-09-16 Funai Electric Co., Ltd. Self-exciting flyback converter
US20060133117A1 (en) * 2003-07-15 2006-06-22 Genannt Berghegger Ralf S Simple switched-mode power supply with current and voltage limitation

Also Published As

Publication number Publication date
GB2473407B (en) 2012-08-01
WO2009156715A1 (en) 2009-12-30
GB201100679D0 (en) 2011-03-02
GB0811483D0 (en) 2008-07-30

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Legal Events

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20120719 AND 20120725

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20201001 AND 20201007