WO2009136369A3 - Frequency controlled capacitive power converter - Google Patents
Frequency controlled capacitive power converter Download PDFInfo
- Publication number
- WO2009136369A3 WO2009136369A3 PCT/IB2009/051855 IB2009051855W WO2009136369A3 WO 2009136369 A3 WO2009136369 A3 WO 2009136369A3 IB 2009051855 W IB2009051855 W IB 2009051855W WO 2009136369 A3 WO2009136369 A3 WO 2009136369A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power converter
- capacitive power
- power
- capacitive
- iout
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000020169 heat generation Effects 0.000 abstract 1
- 230000001131 transforming effect Effects 0.000 abstract 1
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
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- 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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a capacitive power converter for transforming an electric input power (Uo) into an electric output power (Iout). The capacitive power converter (310) includes at least one flying capacitor (311), at least one switching element (312) for periodically charging and discharging the at least one flying capacitor (311) based on a switching frequency (ff) and adjustment means (313, 314) for setting the switching frequency (ff) based on the output power (Iout) of the capacitive power converter (310). Since the adjustment means (313, 314) always set the switching frequency (ff) based on the output power (Iout) of the capacitive power converter (310), electric power losses occurred in the capacitive power converter (310) can be reduced. This leads to reduced heat generation and longer life time of an overall power source.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08156020.3 | 2008-05-09 | ||
EP08156020 | 2008-05-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009136369A2 WO2009136369A2 (en) | 2009-11-12 |
WO2009136369A3 true WO2009136369A3 (en) | 2009-12-30 |
Family
ID=41171116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2009/051855 WO2009136369A2 (en) | 2008-05-09 | 2009-05-06 | Frequency controlled capacitive power converter |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2009136369A2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8710936B2 (en) | 2009-08-05 | 2014-04-29 | Apple Inc. | Resonant oscillator with start up and shut down circuitry |
US8085103B2 (en) | 2009-08-05 | 2011-12-27 | Apple Inc. | Resonant oscillator circuit with reduced startup transients |
US8320141B2 (en) | 2009-08-05 | 2012-11-27 | Apple Inc. | High-efficiency, switched-capacitor power conversion using a resonant clocking circuit to produce gate drive signals for switching capacitors |
US8541999B2 (en) * | 2009-08-05 | 2013-09-24 | Apple Inc. | Controlling power loss in a switched-capacitor power converter |
US8933665B2 (en) | 2009-08-05 | 2015-01-13 | Apple Inc. | Balancing voltages between battery banks |
DE102011117761B4 (en) * | 2011-11-07 | 2017-06-14 | Hans-Wolfgang Diesing | Multi-level capacitive-electromechanical installation dimmer and method for dimming with such a dimmer |
ITBA20120075A1 (en) * | 2012-11-30 | 2014-05-31 | Haisenlux Srl | POWER SUPPLY AND DRIVER FOR ROAD LED ILLUMINATOR WITH VARIABLE CAPACITIVE REACTANCE |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007094194A1 (en) * | 2006-02-17 | 2007-08-23 | Rohm Co., Ltd. | Power supply device, emission control device and display device |
-
2009
- 2009-05-06 WO PCT/IB2009/051855 patent/WO2009136369A2/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007094194A1 (en) * | 2006-02-17 | 2007-08-23 | Rohm Co., Ltd. | Power supply device, emission control device and display device |
Non-Patent Citations (1)
Title |
---|
DONGSHENG MA ET AL: "Design and optimization on dynamic power system for self-powered integrated wireless sensing nodes", LOW POWER ELECTRONICS AND DESIGN, 2005. ISLPED '05. PROCEEDINGS OF THE 2005 INTERNATIONAL SYMPOSIUM ON SAN DIEGO, CA, USA AUG. 8-10, 2005, PISCATAWAY, NJ, USA,IEEE, 8 August 2005 (2005-08-08), pages 303 - 306, XP010844324, ISBN: 978-1-59593-137-5 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009136369A2 (en) | 2009-11-12 |
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