WO2009136369A3 - Frequency controlled capacitive power converter - Google Patents

Frequency controlled capacitive power converter Download PDF

Info

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
Application number
PCT/IB2009/051855
Other languages
French (fr)
Other versions
WO2009136369A2 (en
Inventor
Robert Jan Fronen
Original Assignee
Nxp B.V.
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 Nxp B.V. filed Critical Nxp B.V.
Publication of WO2009136369A2 publication Critical patent/WO2009136369A2/en
Publication of WO2009136369A3 publication Critical patent/WO2009136369A3/en

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
    • H02M3/02—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.
PCT/IB2009/051855 2008-05-09 2009-05-06 Frequency controlled capacitive power converter WO2009136369A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08156020 2008-05-09
EP08156020.3 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8933665B2 (en) 2009-08-05 2015-01-13 Apple Inc. Balancing voltages between battery banks
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
US8085103B2 (en) 2009-08-05 2011-12-27 Apple Inc. Resonant oscillator circuit with reduced startup transients
US8710936B2 (en) 2009-08-05 2014-04-29 Apple Inc. Resonant oscillator with start up and shut down circuitry
US8541999B2 (en) 2009-08-05 2013-09-24 Apple Inc. Controlling power loss in a switched-capacitor power converter
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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