WO2009010802A3 - Forward power converters - Google Patents
Forward power converters Download PDFInfo
- 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
Links
- 238000004804 winding Methods 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 3
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
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.
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)
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 |
US9137866B2 (en) | 2011-12-12 | 2015-09-15 | Cree, Inc. | Emergency lighting conversion for LED strings |
US9871404B2 (en) | 2011-12-12 | 2018-01-16 | Cree, Inc. | Emergency lighting devices with LED strings |
KR102188491B1 (en) | 2012-09-24 | 2020-12-08 | 삼성전자주식회사 | Illuminating apparatus |
GB2506993B (en) * | 2012-09-24 | 2016-03-23 | Samsung Electronics Co Ltd | 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 |
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 |
US10104723B2 (en) | 2013-01-24 | 2018-10-16 | Cree, Inc. | Solid-state lighting apparatus with filament imitation for use with florescent ballasts |
US10693384B1 (en) | 2019-06-26 | 2020-06-23 | Cypress Semiconductor Corporation | Accurate feed-forward sensing in flyback-transformer based secondary controller |
US10651753B1 (en) | 2019-06-26 | 2020-05-12 | Cypress Semiconductor Corporation | Accurate valley detection for secondary controlled flyback converter |
US10554140B1 (en) | 2019-06-26 | 2020-02-04 | Cypress Semiconductor Corporation | AC-DC converter with secondary side-control and synchronous rectifier sense architecture |
US10651754B1 (en) | 2019-06-26 | 2020-05-12 | Cypress Semiconductor Corporation | Accurate peak detection architecture for secondary controlled AC-DC converter |
Citations (6)
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)
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 |
US7474543B2 (en) * | 2005-01-31 | 2009-01-06 | Murata Manufacturing Co., Ltd. | Isolated DC-DC converter |
-
2007
- 2007-07-17 GB GB0713850A patent/GB2451088A/en not_active Withdrawn
-
2008
- 2008-07-17 WO PCT/GB2008/050583 patent/WO2009010802A2/en active Application Filing
Patent Citations (6)
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 |
WO2009010802A2 (en) | 2009-01-22 |
GB2451088A (en) | 2009-01-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009010802A3 (en) | Forward power converters | |
WO2008120012A3 (en) | Forward power converter controllers | |
CN111869079B (en) | Switch type power supply controller with multi-mode starting function | |
GB2490918B (en) | A switched mode power supply | |
GB2482424B (en) | Switched power regulator | |
WO2009101300A3 (en) | Ac/dc converter with galvanic insulation | |
EP2209195A3 (en) | Flyback power supply with forced primary regulation | |
EP2432298A3 (en) | Switching power supply device and adjustable power supply system including the same | |
TW200721652A (en) | A switching regulator, and a circuit and method for controlling the switching regulator | |
WO2013090777A3 (en) | Isolation of secondary transformer winding current during auxiliary power supply generation | |
WO2006067522A3 (en) | Power supply control system | |
ATE494657T1 (en) | SYNCHRONOUS FLYFLY CONVERTER WITH MULTIPLE OUTPUTS | |
WO2013130836A3 (en) | Control circuit and method for controlling a flyback converter operating in both dcm and ccm | |
WO2008120014A3 (en) | Forward power converter controllers | |
GB2447874B (en) | Forward power converter controllers | |
WO2011117646A3 (en) | Regulating controller for controlled self-oscillating converters using bipolar junction transistors | |
JP2010226807A5 (en) | Power supply | |
WO2009158186A3 (en) | Load condition controlled power circuit | |
ATE486810T1 (en) | RESCUE PROCEDURE CONTROL SYSTEM FOR ELEVATOR | |
EP2418762A3 (en) | Switching mode power supply and method of controlling the same | |
WO2009025154A1 (en) | Ac power supply apparatus | |
WO2003003552A3 (en) | Bidirectional flyback switch mode power supply (smps) | |
EP1330016A3 (en) | Power supply start up circuit | |
PH12017500477B1 (en) | Constant on-time (cot) control in isolated converter | |
WO2008015626A3 (en) | Electrical dc-dc power converter with magnetically coupled switch control circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08776218 Country of ref document: EP Kind code of ref document: A2 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08776218 Country of ref document: EP Kind code of ref document: A2 |