WO2009010802A3 - Forward power converters - Google Patents

Forward power converters Download PDF

Info

Publication number
WO2009010802A3
WO2009010802A3 PCT/GB2008/050583 GB2008050583W WO2009010802A3 WO 2009010802 A3 WO2009010802 A3 WO 2009010802A3 GB 2008050583 W GB2008050583 W GB 2008050583W WO 2009010802 A3 WO2009010802 A3 WO 2009010802A3
Authority
WO
WIPO (PCT)
Prior art keywords
power
switch
output voltage
output
transformer
Prior art date
Application number
PCT/GB2008/050583
Other languages
French (fr)
Other versions
WO2009010802A2 (en
Inventor
Paul Ryan
Original Assignee
Cambridge Semiconductor Ltd
Paul Ryan
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 Cambridge Semiconductor Ltd, Paul Ryan filed Critical Cambridge Semiconductor Ltd
Publication of WO2009010802A2 publication Critical patent/WO2009010802A2/en
Publication of WO2009010802A3 publication Critical patent/WO2009010802A3/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/62—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using bucking or boosting dc sources
    • 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
    • H02M3/33538—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 of the forward type
    • H02M3/33546—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 of the forward type with automatic control of the output voltage or current
    • H02M3/33553—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 of the forward type with automatic control of the output voltage or current with galvanic isolation between input and output of both the power stage and the feedback loop
    • 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
    • H02M3/33569—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 having several active switching elements
    • H02M3/33576—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 having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • 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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Dc-Dc Converters (AREA)

Abstract

This invention relates to method s and apparatus for regulating the output voltage and/or current of switch mode power converter, in particular forward converters. A method of regulating the output voltage of a forward switch mode power converter, said power converter having a power input, a power output to provide said output voltage, a transformer with matched polarity primary and secondary windings coupled between said power input and said power output; and a switch to cyclically switch power from said power input on and off to said primary winding of said transformer to transfer power to said power output and a secondary side rectifier; the method comprising: sensing a voltage on said primary winding or on an auxiliary winding of said transformer during a period when said switch is of f and said secondary side rectifier is conducting; and controlling a proportion of time for which said switch is on, responsive to said sensing, to control said output voltage.
PCT/GB2008/050583 2007-07-17 2008-07-17 Forward power converters WO2009010802A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0713850.6 2007-07-17
GB0713850A GB2451088A (en) 2007-07-17 2007-07-17 Regulating the output of a forward power converter

Publications (2)

Publication Number Publication Date
WO2009010802A2 WO2009010802A2 (en) 2009-01-22
WO2009010802A3 true WO2009010802A3 (en) 2009-04-09

Family

ID=38476424

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/050583 WO2009010802A2 (en) 2007-07-17 2008-07-17 Forward power converters

Country Status (2)

Country Link
GB (1) GB2451088A (en)
WO (1) WO2009010802A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201007144D0 (en) 2010-04-29 2010-06-09 Texas Instr Cork Ltd Flyback converter switched magnetic sense for output regulation & line overvoltage protection
EP2461476B1 (en) * 2010-12-02 2013-02-13 ABB Technology AG Method for operating an inverter
US10117295B2 (en) 2013-01-24 2018-10-30 Cree, Inc. LED lighting apparatus for use with AC-output lighting ballasts
US9871404B2 (en) 2011-12-12 2018-01-16 Cree, Inc. Emergency lighting devices with LED strings
US9137866B2 (en) 2011-12-12 2015-09-15 Cree, Inc. Emergency lighting conversion for LED strings
GB2506993B (en) * 2012-09-24 2016-03-23 Samsung Electronics Co Ltd Illuminating apparatus
KR102188491B1 (en) 2012-09-24 2020-12-08 삼성전자주식회사 Illuminating apparatus
US9439250B2 (en) 2012-09-24 2016-09-06 Samsung Electronics Co., Ltd. Driving light emitting diode (LED) lamps using power received from ballast stabilizers
CN102983751B (en) * 2012-11-30 2016-08-24 余姚亿威电子科技有限公司 A kind of LLC resonant converter control circuit
US10104723B2 (en) 2013-01-24 2018-10-16 Cree, Inc. Solid-state lighting apparatus with filament imitation for use with florescent ballasts
US10045406B2 (en) 2013-01-24 2018-08-07 Cree, Inc. Solid-state lighting apparatus for use with fluorescent ballasts
US9439249B2 (en) * 2013-01-24 2016-09-06 Cree, Inc. LED lighting apparatus for use with AC-output lighting ballasts
US10651753B1 (en) 2019-06-26 2020-05-12 Cypress Semiconductor Corporation Accurate valley detection for secondary controlled flyback converter
US10651754B1 (en) 2019-06-26 2020-05-12 Cypress Semiconductor Corporation Accurate peak detection architecture for secondary controlled AC-DC converter
US10693384B1 (en) 2019-06-26 2020-06-23 Cypress Semiconductor Corporation Accurate feed-forward sensing in flyback-transformer based secondary controller
US10554140B1 (en) 2019-06-26 2020-02-04 Cypress Semiconductor Corporation AC-DC converter with secondary side-control and synchronous rectifier sense architecture

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688160A (en) * 1985-12-19 1987-08-18 American Telephone And Telegraph Co., At&T Bell Labs Single ended forward converter with resonant commutation of magnetizing current
JPH05244778A (en) * 1992-02-28 1993-09-21 Taiyo Yuden Co Ltd Forward converter type power source
JPH11289765A (en) * 1998-04-03 1999-10-19 Nec Corp Forward converter
US6249444B1 (en) * 1999-11-01 2001-06-19 Astec International Limited Offset resonant ZVS forward converter
JP2003235261A (en) * 2002-02-13 2003-08-22 Nichicon Corp Switching power source
US20050174811A1 (en) * 2004-02-10 2005-08-11 Bel-Fuse, Inc. Converter with integrated

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3365356B2 (en) * 1998-09-16 2003-01-08 株式会社村田製作所 DC-DC converter
JP3337009B2 (en) * 1999-07-02 2002-10-21 株式会社村田製作所 Switching power supply
JP3661666B2 (en) * 2001-08-10 2005-06-15 株式会社村田製作所 Isolated switching power supply
JP4155211B2 (en) * 2003-08-18 2008-09-24 株式会社村田製作所 Switching power supply
EP1845606A1 (en) * 2005-01-31 2007-10-17 Murata Manufacturing Co., Ltd. Isolation dc/dc converter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688160A (en) * 1985-12-19 1987-08-18 American Telephone And Telegraph Co., At&T Bell Labs Single ended forward converter with resonant commutation of magnetizing current
JPH05244778A (en) * 1992-02-28 1993-09-21 Taiyo Yuden Co Ltd Forward converter type power source
JPH11289765A (en) * 1998-04-03 1999-10-19 Nec Corp Forward converter
US6249444B1 (en) * 1999-11-01 2001-06-19 Astec International Limited Offset resonant ZVS forward converter
JP2003235261A (en) * 2002-02-13 2003-08-22 Nichicon Corp Switching power source
US20050174811A1 (en) * 2004-02-10 2005-08-11 Bel-Fuse, Inc. Converter with integrated

Also Published As

Publication number Publication date
GB0713850D0 (en) 2007-08-29
GB2451088A (en) 2009-01-21
WO2009010802A2 (en) 2009-01-22

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