WO2010025450A3 - Led lighting system with accurate current control - Google Patents

Led lighting system with accurate current control Download PDF

Info

Publication number
WO2010025450A3
WO2010025450A3 PCT/US2009/055515 US2009055515W WO2010025450A3 WO 2010025450 A3 WO2010025450 A3 WO 2010025450A3 US 2009055515 W US2009055515 W US 2009055515W WO 2010025450 A3 WO2010025450 A3 WO 2010025450A3
Authority
WO
WIPO (PCT)
Prior art keywords
led
charge amount
time period
current
lighting system
Prior art date
Application number
PCT/US2009/055515
Other languages
French (fr)
Other versions
WO2010025450A2 (en
Inventor
John Laurence Melanson
Original Assignee
Cirrus Logic, Inc
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 Cirrus Logic, Inc filed Critical Cirrus Logic, Inc
Priority to GB1102839.6A priority Critical patent/GB2474994B/en
Priority to CN200980143361.9A priority patent/CN102282912B/en
Publication of WO2010025450A2 publication Critical patent/WO2010025450A2/en
Publication of WO2010025450A3 publication Critical patent/WO2010025450A3/en

Links

Classifications

    • 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]
    • 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]
    • 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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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]
    • H05B45/20—Controlling the colour of the light
    • 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
    • H05B45/32—Pulse-control circuits
    • H05B45/327—Burst dimming
    • 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
    • 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]

Abstract

A light emitting diode (LED) lighting system and method are disclosed. The LED lighting system and method include an LED controller to accurately control a current in an LED system The LED controller includes components to calculate, based on the current and an active time period of an LED current time period, an actual charge amount delivered to the LED system wherein the LED current time period is duty cycle modulated at a rate of greater than fifty (50) Hz and to utilize the actual charge amount to modify and provide a desired target charge amount to be delivered during a future active time period of the LED current tune period The LED system and method further involve components to compare the actual charge amount to a desired charge amount for the active time period and compensate for a difference between the actual charge amount and the desired charge amount during the future active time period.
PCT/US2009/055515 2008-08-29 2009-08-31 Led lighting system with accurate current control WO2010025450A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1102839.6A GB2474994B (en) 2008-08-29 2009-08-31 LED lighting system with accurate current control
CN200980143361.9A CN102282912B (en) 2008-08-29 2009-08-31 There is the LED illumination System that precision current controls

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US9284208P 2008-08-29 2008-08-29
US61/092,842 2008-08-29
US12/339,651 US8487546B2 (en) 2008-08-29 2008-12-19 LED lighting system with accurate current control
US12/339,651 2008-12-19

Publications (2)

Publication Number Publication Date
WO2010025450A2 WO2010025450A2 (en) 2010-03-04
WO2010025450A3 true WO2010025450A3 (en) 2010-05-20

Family

ID=41346698

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/055515 WO2010025450A2 (en) 2008-08-29 2009-08-31 Led lighting system with accurate current control

Country Status (4)

Country Link
US (2) US8487546B2 (en)
CN (3) CN104955235B (en)
GB (1) GB2474994B (en)
WO (1) WO2010025450A2 (en)

Families Citing this family (145)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7667408B2 (en) 2007-03-12 2010-02-23 Cirrus Logic, Inc. Lighting system with lighting dimmer output mapping
US7288902B1 (en) 2007-03-12 2007-10-30 Cirrus Logic, Inc. Color variations in a dimmable lighting device with stable color temperature light sources
US8957601B2 (en) 2008-09-18 2015-02-17 Lumastream Canada Ulc Configurable LED driver/dimmer for solid state lighting applications
US8330381B2 (en) * 2009-05-14 2012-12-11 Ilumisys, Inc. Electronic circuit for DC conversion of fluorescent lighting ballast
US8390214B2 (en) * 2009-08-19 2013-03-05 Albeo Technologies, Inc. LED-based lighting power supplies with power factor correction and dimming control
US9066394B2 (en) * 2009-09-28 2015-06-23 Koninklijke Philips N.V. Method and apparatus providing deep dimming of solid state lighting systems
US9155174B2 (en) 2009-09-30 2015-10-06 Cirrus Logic, Inc. Phase control dimming compatible lighting systems
DE102009050651A1 (en) * 2009-10-26 2011-04-28 Infineon Technologies Austria Ag Method and device for controlling the brightness of light-emitting diodes
US20110133659A1 (en) * 2009-12-06 2011-06-09 Jian-Shen Li Power Source Control Method for a Multi-module LED Circuit and Related Control Device and LED Circuit
DE102010015125A1 (en) * 2010-04-16 2011-10-20 Hella Kgaa Hueck & Co. Method for controlling a luminous flux of a lighting device with a number of semiconductor illuminants, which is set up for the identification and marking of traffic areas of airports
CN102238773A (en) * 2010-04-30 2011-11-09 奥斯兰姆有限公司 LED (light-emitting diode) drive method and system
US9089024B2 (en) 2010-05-11 2015-07-21 Arkalumen Inc. Methods and apparatus for changing a DC supply voltage applied to a lighting circuit
US9086435B2 (en) 2011-05-10 2015-07-21 Arkalumen Inc. Circuits for sensing current levels within a lighting apparatus incorporating a voltage converter
FR2962877B1 (en) * 2010-07-13 2014-03-21 Valeo Vision METHOD FOR CONTROLLING LIGHT EMITTING DIODES
US8941316B2 (en) 2010-08-17 2015-01-27 Cirrus Logic, Inc. Duty factor probing of a triac-based dimmer
US8536799B1 (en) 2010-07-30 2013-09-17 Cirrus Logic, Inc. Dimmer detection
US8729811B2 (en) 2010-07-30 2014-05-20 Cirrus Logic, Inc. Dimming multiple lighting devices by alternating energy transfer from a magnetic storage element
US8847515B2 (en) 2010-08-24 2014-09-30 Cirrus Logic, Inc. Multi-mode dimmer interfacing including attach state control
US9307601B2 (en) 2010-08-17 2016-04-05 Koninklijke Philips N.V. Input voltage sensing for a switching power converter and a triac-based dimmer
JP5079855B2 (en) * 2010-08-24 2012-11-21 シャープ株式会社 LED drive circuit and LED illumination lamp using the same
CN102387627B (en) * 2010-09-03 2015-07-29 奥斯兰姆有限公司 The method and apparatus of light-emitting diode driving and light modulation and illuminator
WO2012051376A1 (en) 2010-10-13 2012-04-19 Marvell World Trade Ltd Dimming control for electronic lamp
US20120104964A1 (en) * 2010-10-27 2012-05-03 Brent Hughes Led driver with pwm dimming and method thereof
US9491845B2 (en) 2010-11-04 2016-11-08 Koninklijke Philips N.V. Controlled power dissipation in a link path in a lighting system
WO2012061769A2 (en) 2010-11-04 2012-05-10 Cirrus Logic, Inc. Controlled power dissipation in a switch path in a lighting system
ES2718100T3 (en) 2010-11-16 2019-06-27 Signify Holding Bv Compatibility of final phase light attenuator with high resistance prediction of light attenuator
KR101883001B1 (en) * 2010-12-09 2018-07-27 로무 가부시키가이샤 Driving circuit of light emitting element, light emitting device using the same, and electronic device
EP2653014B1 (en) 2010-12-16 2016-10-19 Philips Lighting Holding B.V. Switching parameter based discontinuous mode-critical conduction mode transition
US8941308B2 (en) 2011-03-16 2015-01-27 Arkalumen Inc. Lighting apparatus and methods for controlling lighting apparatus using ambient light levels
US8939604B2 (en) 2011-03-25 2015-01-27 Arkalumen Inc. Modular LED strip lighting apparatus
CN103428953B (en) 2012-05-17 2016-03-16 昂宝电子（上海）有限公司 For the system and method utilizing system controller to carry out brightness adjustment control
US9351356B2 (en) 2011-06-03 2016-05-24 Koninklijke Philips N.V. Primary-side control of a switching power converter with feed forward delay compensation
EP2715924A1 (en) 2011-06-03 2014-04-09 Cirrus Logic, Inc. Control data determination from primary-side sensing of a secondary-side voltage in a switching power converter
US9060400B2 (en) * 2011-07-12 2015-06-16 Arkalumen Inc. Control apparatus incorporating a voltage converter for controlling lighting apparatus
US8866392B2 (en) * 2011-08-31 2014-10-21 Chia-Teh Chen Two-level LED security light with motion sensor
BR112014008524A2 (en) * 2011-10-14 2017-04-18 Koninklijke Philips Nv method of determining the amount of light generation from a solid state lighting unit, and, solid state lighting unit configured to connect to a dimmer in a dimmer circuit
CN103947289B (en) * 2011-11-14 2017-03-01 皇家飞利浦有限公司 System and method for being controlled to the maximum output driving voltage of solid state illumination device
EP2600694B1 (en) * 2011-11-30 2013-11-20 Vossloh-Schwabe Deutschland GmbH LED driver circuit with constant power safe operating area
JP5884050B2 (en) * 2011-12-05 2016-03-15 パナソニックＩｐマネジメント株式会社 Lighting device and lighting apparatus provided with the same
TWI465151B (en) * 2011-12-07 2014-12-11 Richtek Technology Corp Dimming controller and method for controlling a brightness of leds
JP2013122846A (en) * 2011-12-09 2013-06-20 Panasonic Corp Lighting device
WO2013090852A2 (en) * 2011-12-14 2013-06-20 Cirrus Logic, Inc. Adaptive current control timing and responsive current control for interfacing with a dimmer
WO2013110027A1 (en) * 2012-01-20 2013-07-25 Osram Sylvania Inc. Techniques for assessing condition of leds and power supply
US9167662B2 (en) 2012-02-29 2015-10-20 Cirrus Logic, Inc. Mixed load current compensation for LED lighting
JP5547849B2 (en) * 2012-03-02 2014-07-16 パナソニック株式会社 DC power supply circuit
JP2013186944A (en) * 2012-03-05 2013-09-19 Toshiba Lighting & Technology Corp Power supply for illumination, and illuminating fixture
EP2829157B1 (en) 2012-03-21 2016-06-15 Tridonic GmbH & Co KG Operating circuit for leds, having dimming signal comprising high-frequency modulated pulse packet signal with harmonised frequencies
KR20130110410A (en) * 2012-03-29 2013-10-10 엘지전자 주식회사 Lighting apparatus using light emitting diode having function of power compensation
TWI519199B (en) * 2012-06-21 2016-01-21 立錡科技股份有限公司 Led driver with pwm dimming and driving method thereof
JP5999326B2 (en) * 2012-07-05 2016-09-28 パナソニックＩｐマネジメント株式会社 LED lighting device and lighting apparatus
US9232574B2 (en) 2012-07-06 2016-01-05 Lutron Electronics Co., Inc. Forward converter having a primary-side current sense circuit
US9520794B2 (en) * 2012-07-25 2016-12-13 Philips Lighting Holding B.V Acceleration of output energy provision for a load during start-up of a switching power converter
JP6048725B2 (en) * 2012-07-27 2016-12-21 東芝ライテック株式会社 Detection circuit
EP2701461A1 (en) * 2012-08-24 2014-02-26 Dialog Semiconductor GmbH Solid state lightening driver with mixed control of power switch
US9184661B2 (en) 2012-08-27 2015-11-10 Cirrus Logic, Inc. Power conversion with controlled capacitance charging including attach state control
JP5988207B2 (en) * 2012-09-07 2016-09-07 パナソニックＩｐマネジメント株式会社 Solid-state light-emitting element driving device, lighting device, and lighting fixture
US8928250B2 (en) * 2012-09-19 2015-01-06 Universal Lighting Technologies Method and circuit for LED load managment
CN103024994B (en) 2012-11-12 2016-06-01 昂宝电子（上海）有限公司 Use dimming control system and the method for TRIAC dimmer
JP6037164B2 (en) * 2012-12-07 2016-11-30 東芝ライテック株式会社 Power supply circuit and lighting device
WO2014099681A2 (en) 2012-12-17 2014-06-26 Ecosense Lighting Inc. Systems and methods for dimming of a light source
EP2949185B1 (en) * 2013-01-23 2017-06-21 Tridonic GmbH & Co. KG Led module, lamp and method for operating a led module
US9496844B1 (en) 2013-01-25 2016-11-15 Koninklijke Philips N.V. Variable bandwidth filter for dimmer phase angle measurements
US9565782B2 (en) 2013-02-15 2017-02-07 Ecosense Lighting Inc. Field replaceable power supply cartridge
US9166485B2 (en) 2013-03-11 2015-10-20 Cirrus Logic, Inc. Quantization error reduction in constant output current control drivers
US9024533B2 (en) * 2013-03-12 2015-05-05 Atmel Corporation Controlling switching current regulators
EP2974545A1 (en) 2013-03-14 2016-01-20 Koninklijke Philips N.V. Controlled electronic system power dissipation via an auxiliary-power dissipation circuit
US9338838B2 (en) 2013-03-14 2016-05-10 4382412 Canada Inc. Half- or quarter-cycle current regulator for non-isolated, line voltage L.E.D. ballast circuits
US9282598B2 (en) 2013-03-15 2016-03-08 Koninklijke Philips N.V. System and method for learning dimmer characteristics
DE102013205859B4 (en) * 2013-04-03 2021-12-09 Tridonic Gmbh & Co Kg Method and operating circuit for operating light sources, in particular light-emitting diodes (LEDs)
DE102013215963A1 (en) * 2013-04-26 2014-10-30 Tridonic Gmbh & Co Kg Operating circuit and method for operating at least one light emitting diode depending on a dimming level
AT13981U1 (en) * 2013-04-30 2015-02-15 Tridonic Gmbh & Co Kg Operating circuit for LEDs
US9113521B2 (en) 2013-05-29 2015-08-18 Lutron Electronics Co., Inc. Load control device for a light-emitting diode light source
JP6176567B2 (en) * 2013-07-09 2017-08-09 パナソニックＩｐマネジメント株式会社 Lighting device
US9131578B2 (en) 2013-07-16 2015-09-08 General Electric Company Programmable light emitting diode (LED) driver technique based upon an input voltage signal
US9179527B2 (en) * 2013-07-16 2015-11-03 General Electric Company Programmable light emitting diode (LED) driver technique based upon a prefix signal
EP3066892B1 (en) 2013-11-08 2020-08-05 Lutron Technology Company LLC Load control device for a light-emitting diode light source
CN104661384B (en) * 2013-11-22 2018-01-30 台达电子企业管理（上海）有限公司 The drive device and method of light emitting semiconductor device group
WO2015080467A1 (en) * 2013-11-26 2015-06-04 엘지이노텍 주식회사 Power apparatus for led lighting
DE102013113972B4 (en) * 2013-12-12 2021-02-04 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Adaptive lighting device for high-speed image recordings and method for calibrating such a lighting device
CN106105392B (en) * 2014-02-14 2018-11-09 飞利浦灯具控股公司 Circuit and method for the pulse width modulation for controlling the electric current supply for being used for load
US9621062B2 (en) 2014-03-07 2017-04-11 Philips Lighting Holding B.V. Dimmer output emulation with non-zero glue voltage
US9788379B2 (en) * 2014-03-28 2017-10-10 Xicato, Inc. Deep dimming of an LED-based illumination device
US9215772B2 (en) 2014-04-17 2015-12-15 Philips International B.V. Systems and methods for minimizing power dissipation in a low-power lamp coupled to a trailing-edge dimmer
CN103957634B (en) 2014-04-25 2017-07-07 广州昂宝电子有限公司 Illuminator and its control method
FR3021837A1 (en) * 2014-06-03 2015-12-04 Valeo Vision SYSTEM FOR CONTROLLING THE ELECTRIC POWER SUPPLY AND THERMAL MANAGEMENT OF AT LEAST ONE LIGHT SOURCE
FR3023427B1 (en) * 2014-07-04 2016-07-15 Valeo Vision POWER SUPPLY-VOLTAGE LOWERING CONVERTER WITH PROTECTION CIRCUIT
CN104066254B (en) 2014-07-08 2017-01-04 昂宝电子（上海）有限公司 TRIAC dimmer is used to carry out the system and method for intelligent dimming control
EP2975767B1 (en) * 2014-07-17 2020-01-22 Nxp B.V. A switched mode power supply and lighting circuit
US9973077B2 (en) 2014-08-27 2018-05-15 Schneider Electric It Corporation Delta conversion rectifier
TWI597998B (en) * 2014-10-03 2017-09-01 捷盛生醫光電股份有限公司 Pulsed light adjustment circuit
US10477636B1 (en) 2014-10-28 2019-11-12 Ecosense Lighting Inc. Lighting systems having multiple light sources
WO2016093534A1 (en) * 2014-12-12 2016-06-16 서울반도체 주식회사 Led drive circuit with improved flicker performance, and led lighting device comprising same
TWI548187B (en) * 2015-01-23 2016-09-01 Dynamic drive capability adjustment of the power control device
US11306897B2 (en) 2015-02-09 2022-04-19 Ecosense Lighting Inc. Lighting systems generating partially-collimated light emissions
US9869450B2 (en) 2015-02-09 2018-01-16 Ecosense Lighting Inc. Lighting systems having a truncated parabolic- or hyperbolic-conical light reflector, or a total internal reflection lens; and having another light reflector
US9651216B2 (en) 2015-03-03 2017-05-16 Ecosense Lighting Inc. Lighting systems including asymmetric lens modules for selectable light distribution
US9746159B1 (en) 2015-03-03 2017-08-29 Ecosense Lighting Inc. Lighting system having a sealing system
US9568665B2 (en) 2015-03-03 2017-02-14 Ecosense Lighting Inc. Lighting systems including lens modules for selectable light distribution
US9651227B2 (en) 2015-03-03 2017-05-16 Ecosense Lighting Inc. Low-profile lighting system having pivotable lighting enclosure
US9991791B2 (en) 2015-03-30 2018-06-05 Infineon Technologies Austria Ag System and method for a switched-mode power supply
US9565731B2 (en) 2015-05-01 2017-02-07 Lutron Electronics Co., Inc. Load control device for a light-emitting diode light source
US9655179B2 (en) * 2015-05-04 2017-05-16 Terralux, Inc. LED driver with advanced dimming
US9775211B2 (en) 2015-05-05 2017-09-26 Arkalumen Inc. Circuit and apparatus for controlling a constant current DC driver output
US9992829B2 (en) 2015-05-05 2018-06-05 Arkalumen Inc. Control apparatus and system for coupling a lighting module to a constant current DC driver
US9992836B2 (en) 2015-05-05 2018-06-05 Arkawmen Inc. Method, system and apparatus for activating a lighting module using a buffer load module
US10568180B2 (en) 2015-05-05 2020-02-18 Arkalumen Inc. Method and apparatus for controlling a lighting module having a plurality of LED groups
US10225904B2 (en) 2015-05-05 2019-03-05 Arkalumen, Inc. Method and apparatus for controlling a lighting module based on a constant current level from a power source
US9685881B2 (en) * 2015-06-04 2017-06-20 Schneider Electric It Corporation AC-DC rectifier system
EP3311633A1 (en) 2015-06-19 2018-04-25 Lutron Electrics Co., Inc. Load control device for a light-emitting diode light source
USD785218S1 (en) 2015-07-06 2017-04-25 Ecosense Lighting Inc. LED luminaire having a mounting system
USD782094S1 (en) 2015-07-20 2017-03-21 Ecosense Lighting Inc. LED luminaire having a mounting system
USD782093S1 (en) 2015-07-20 2017-03-21 Ecosense Lighting Inc. LED luminaire having a mounting system
CN105034221B (en) * 2015-07-30 2017-10-24 重庆铸豪机械有限责任公司 Using the system of automatic management technique productions rain shaving electrical machine end cap
US9651232B1 (en) 2015-08-03 2017-05-16 Ecosense Lighting Inc. Lighting system having a mounting device
CN106488621B (en) 2015-08-25 2021-02-12 西门子瑞士有限公司 Notification device
US20180255614A1 (en) * 2015-09-28 2018-09-06 Kelsey-Hayes Company Programmable led driver
CN106804081B (en) * 2015-11-26 2019-10-11 华硕电脑股份有限公司 Light adjusting circuit and dimming controlling method
US9867245B2 (en) * 2015-12-31 2018-01-09 Stmicroelectronics S.R.L. Electronic circuit for driving LED strings so as to reduce the light flicker
US9750102B1 (en) * 2016-04-06 2017-08-29 Power Integrations, Inc. Switch current control to shape input current
RU2643526C2 (en) * 2016-05-17 2018-02-02 Юрий Борисович Соколов Led source of lighting with power supply from unstable tree-phase ac network
CN107529242B (en) * 2016-06-22 2019-06-21 华润矽威科技（上海）有限公司 A kind of LED drive circuit and method of equalization efficiency and power factor
US10056828B2 (en) * 2016-07-11 2018-08-21 Infineon Technologies Austria Ag System and method for controlling current in a switching regulator
CN110383947B (en) 2016-09-16 2022-04-01 路创技术有限责任公司 Load control device for light emitting diode light sources with different operating modes
CN107889321B (en) * 2016-09-29 2020-06-16 卡任特照明解决方案有限公司 Driving circuit
CN106413189B (en) 2016-10-17 2018-12-28 广州昂宝电子有限公司 Use the intelligence control system relevant to TRIAC light modulator and method of modulated signal
RU2633966C1 (en) 2016-11-30 2017-10-20 Юрий Борисович Соколов Power supply from multi-phase alternating current network with correction of harmonic oscillations
EP3563641A4 (en) * 2016-12-29 2019-12-11 Texas Instruments Incorporated Adaptive turn-off delay time compensation for led controller
WO2018132110A1 (en) 2017-01-15 2018-07-19 Ecosense Lighting Inc. Lighting systems, and systems for determining periodic values of a phase angle of a waveform power input
WO2018184920A1 (en) * 2017-04-05 2018-10-11 Tridonic Gmbh & Co Kg Dimming of lamps
DE102017205779A1 (en) * 2017-04-05 2018-10-11 Tridonic Gmbh & Co Kg Dimming of bulbs by means of pulse width modulation and additional fine regulation of the output power
CN107645804A (en) 2017-07-10 2018-01-30 昂宝电子（上海）有限公司 System for LED switch control
CN107682953A (en) 2017-09-14 2018-02-09 昂宝电子（上海）有限公司 LED illumination System and its control method
US10483850B1 (en) 2017-09-18 2019-11-19 Ecosense Lighting Inc. Universal input-voltage-compatible switched-mode power supply
CN107995730B (en) 2017-11-30 2020-01-07 昂宝电子（上海）有限公司 System and method for phase-based control in connection with TRIAC dimmers
CN108200685B (en) 2017-12-28 2020-01-07 昂宝电子（上海）有限公司 LED lighting system for silicon controlled switch control
CN109922564B (en) 2019-02-19 2023-08-29 昂宝电子（上海）有限公司 Voltage conversion system and method for TRIAC drive
CN109818673B (en) * 2019-03-25 2023-09-12 浙江大学城市学院 Signal transmitting module circuit of visible light communication wireless broadcasting system
CN110493913B (en) 2019-08-06 2022-02-01 昂宝电子（上海）有限公司 Control system and method for silicon controlled dimming LED lighting system
CN110461066A (en) * 2019-08-27 2019-11-15 杭州必易微电子有限公司 For controlling control circuit, driving circuit and the control method of transistor
CN110831295B (en) 2019-11-20 2022-02-25 昂宝电子（上海）有限公司 Dimming control method and system for dimmable LED lighting system
CN110831289B (en) 2019-12-19 2022-02-15 昂宝电子（上海）有限公司 LED drive circuit, operation method thereof and power supply control module
CN111031635B (en) 2019-12-27 2021-11-30 昂宝电子（上海）有限公司 Dimming system and method for LED lighting system
US11229097B2 (en) * 2020-02-27 2022-01-18 Dicon Fiberoptics, Inc. Method and apparatus for adjusting the rate of change of the brightness of a light emitting diode (LED) light fixture
CN211606885U (en) * 2020-02-28 2020-09-29 广州市浩洋电子股份有限公司 LED dimming device for accelerating constant current source inductance energy discharge
CN111432526B (en) 2020-04-13 2023-02-21 昂宝电子（上海）有限公司 Control system and method for power factor optimization of LED lighting systems

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040046680A1 (en) * 2001-09-28 2004-03-11 Toshihiko Masuda Delta-sigma modulation apparatus and signal amplification apparatus
US20050218838A1 (en) * 2004-03-15 2005-10-06 Color Kinetics Incorporated LED-based lighting network power control methods and apparatus
US20060261754A1 (en) * 2005-05-18 2006-11-23 Samsung Electro-Mechanics Co., Ltd. LED driving circuit having dimming circuit
US20070024213A1 (en) * 2005-07-28 2007-02-01 Synditec, Inc. Pulsed current averaging controller with amplitude modulation and time division multiplexing for arrays of independent pluralities of light emitting diodes
WO2007139975A1 (en) * 2006-05-26 2007-12-06 Lumificient Technologies, Llc Current regulator apparatus and methods
WO2008068682A1 (en) * 2006-12-04 2008-06-12 Nxp B.V. Electronic device for driving light emitting diodes
US20080224914A1 (en) * 2007-03-14 2008-09-18 Sanyo Electric Co., Ltd. Integrated Circuit for Analog-to-Digital Conversion

Family Cites Families (213)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316495A (en) * 1964-07-06 1967-04-25 Cons Systems Corp Low-level commutator with means for providing common mode rejection
US3423689A (en) * 1965-08-19 1969-01-21 Hewlett Packard Co Direct current amplifier
US3586988A (en) * 1967-12-01 1971-06-22 Newport Lab Direct coupled differential amplifier
US3725804A (en) * 1971-11-26 1973-04-03 Avco Corp Capacitance compensation circuit for differential amplifier
US3790878A (en) 1971-12-22 1974-02-05 Keithley Instruments Switching regulator having improved control circuiting
US3881167A (en) 1973-07-05 1975-04-29 Pelton Company Inc Method and apparatus to maintain constant phase between reference and output signals
US4075701A (en) 1975-02-12 1978-02-21 Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung Method and circuit arrangement for adapting the measuring range of a measuring device operating with delta modulation in a navigation system
US4334250A (en) 1978-03-16 1982-06-08 Tektronix, Inc. MFM data encoder with write precompensation
US4337441A (en) 1980-02-11 1982-06-29 Tektronix, Inc. Supply-voltage driver for a differential amplifier
US4414493A (en) * 1981-10-06 1983-11-08 Thomas Industries Inc. Light dimmer for solid state ballast
US4476706A (en) 1982-01-18 1984-10-16 Delphian Partners Remote calibration system
US4700188A (en) 1985-01-29 1987-10-13 Micronic Interface Technologies Electric power measurement system and hall effect based electric power meter for use therein
DE3528046A1 (en) * 1985-08-05 1987-02-05 Bbc Brown Boveri & Cie RADIO CONTROL RECEIVER
US4677366A (en) * 1986-05-12 1987-06-30 Pioneer Research, Inc. Unity power factor power supply
US4683529A (en) 1986-11-12 1987-07-28 Zytec Corporation Switching power supply with automatic power factor correction
US4797633A (en) * 1987-03-20 1989-01-10 Video Sound, Inc. Audio amplifier
US4994952A (en) 1988-02-10 1991-02-19 Electronics Research Group, Inc. Low-noise switching power supply having variable reluctance transformer
GB8817684D0 (en) * 1988-07-25 1988-09-01 Astec Int Ltd Power factor improvement
GB8821130D0 (en) 1988-09-09 1988-10-12 Ml Aviation Co Ltd Inductive coupler
US4937727A (en) * 1989-03-07 1990-06-26 Rca Licensing Corporation Switch-mode power supply with transformer-coupled feedback
US4973919A (en) * 1989-03-23 1990-11-27 Doble Engineering Company Amplifying with directly coupled, cascaded amplifiers
US4940929A (en) * 1989-06-23 1990-07-10 Apollo Computer, Inc. AC to DC converter with unity power factor
US4980898A (en) * 1989-08-08 1990-12-25 Siemens-Pacesetter, Inc. Self-oscillating burst mode transmitter with integral number of periods
US5109185A (en) * 1989-09-29 1992-04-28 Ball Newton E Phase-controlled reversible power converter presenting a controllable counter emf to a source of an impressed voltage
US4992919A (en) 1989-12-29 1991-02-12 Lee Chu Quon Parallel resonant converter with zero voltage switching
US5278490A (en) * 1990-09-04 1994-01-11 California Institute Of Technology One-cycle controlled switching circuit
US5121079A (en) * 1991-02-12 1992-06-09 Dargatz Marvin R Driven-common electronic amplifier
US5477481A (en) * 1991-02-15 1995-12-19 Crystal Semiconductor Corporation Switched-capacitor integrator with chopper stabilization performed at the sampling rate
US5206540A (en) 1991-05-09 1993-04-27 Unitrode Corporation Transformer isolated drive circuit
EP0580923B1 (en) * 1992-07-30 1997-10-15 STMicroelectronics S.r.l. Device comprising an error amplifier, a control portion and a circuit for detecting voltage variations in relation to a set value
US5264780A (en) * 1992-08-10 1993-11-23 International Business Machines Corporation On time control and gain circuit
JPH0676961A (en) * 1992-08-26 1994-03-18 Matsushita Electric Works Ltd Variable color lighting system
US5313381A (en) 1992-09-01 1994-05-17 Power Integrations, Inc. Three-terminal switched mode power supply integrated circuit
US5359180A (en) * 1992-10-02 1994-10-25 General Electric Company Power supply system for arcjet thrusters
JPH06209569A (en) * 1993-01-05 1994-07-26 Yokogawa Electric Corp Switching power supply
US5323157A (en) * 1993-01-15 1994-06-21 Motorola, Inc. Sigma-delta digital-to-analog converter with reduced noise
US5481178A (en) * 1993-03-23 1996-01-02 Linear Technology Corporation Control circuit and method for maintaining high efficiency over broad current ranges in a switching regulator circuit
US5638265A (en) 1993-08-24 1997-06-10 Gabor; George Low line harmonic AC to DC power supply
US5383109A (en) 1993-12-10 1995-01-17 University Of Colorado High power factor boost rectifier apparatus
US5479333A (en) * 1994-04-25 1995-12-26 Chrysler Corporation Power supply start up booster circuit
US5565761A (en) * 1994-09-02 1996-10-15 Micro Linear Corp Synchronous switching cascade connected offline PFC-PWM combination power converter controller
US5747977A (en) * 1995-03-30 1998-05-05 Micro Linear Corporation Switching regulator having low power mode responsive to load power consumption
JPH09140145A (en) * 1995-11-15 1997-05-27 Samsung Electron Co Ltd Boosting converter provided with power-factor compensating circuit
GB2307802B (en) 1995-12-01 2000-06-07 Ibm Power supply with power factor correction circuit
KR0154776B1 (en) * 1995-12-28 1998-12-15 김광호 Power factor compensation circuit
US5677618A (en) * 1996-02-26 1997-10-14 The Boeing Company DC-to-DC switching power supply utilizing a delta-sigma converter in a closed loop controller
US6072969A (en) * 1996-03-05 2000-06-06 Canon Kabushiki Kaisha Developing cartridge
US5798635A (en) * 1996-06-20 1998-08-25 Micro Linear Corporation One pin error amplifier and switched soft-start for an eight pin PFC-PWM combination integrated circuit converter controller
US5781040A (en) 1996-10-31 1998-07-14 Hewlett-Packard Company Transformer isolated driver for power transistor using frequency switching as the control signal
US5783909A (en) * 1997-01-10 1998-07-21 Relume Corporation Maintaining LED luminous intensity
US6084450A (en) * 1997-01-14 2000-07-04 The Regents Of The University Of California PWM controller with one cycle response
US5960207A (en) * 1997-01-21 1999-09-28 Dell Usa, L.P. System and method for reducing power losses by gating an active power factor conversion process
US5793625A (en) 1997-01-24 1998-08-11 Baker Hughes Incorporated Boost converter regulated alternator
JP3644615B2 (en) * 1997-02-17 2005-05-11 Ｔｄｋ株式会社 Switching power supply
US5952849A (en) 1997-02-21 1999-09-14 Analog Devices, Inc. Logic isolator with high transient immunity
US6442213B1 (en) 1997-04-22 2002-08-27 Silicon Laboratories Inc. Digital isolation system with hybrid circuit in ADC calibration loop
US5901176A (en) 1997-04-29 1999-05-04 Hewlett-Packard Company Delta-sigma pulse width modulator control circuit
US6211627B1 (en) * 1997-07-29 2001-04-03 Michael Callahan Lighting systems
US5963086A (en) * 1997-08-08 1999-10-05 Velodyne Acoustics, Inc. Class D amplifier with switching control
US6211626B1 (en) * 1997-08-26 2001-04-03 Color Kinetics, Incorporated Illumination components
US6806659B1 (en) * 1997-08-26 2004-10-19 Color Kinetics, Incorporated Multicolored LED lighting method and apparatus
US6016038A (en) * 1997-08-26 2000-01-18 Color Kinetics, Inc. Multicolored LED lighting method and apparatus
US7064498B2 (en) 1997-08-26 2006-06-20 Color Kinetics Incorporated Light-emitting diode based products
US6888322B2 (en) * 1997-08-26 2005-05-03 Color Kinetics Incorporated Systems and methods for color changing device and enclosure
US6975079B2 (en) 1997-08-26 2005-12-13 Color Kinetics Incorporated Systems and methods for controlling illumination sources
US7014336B1 (en) 1999-11-18 2006-03-21 Color Kinetics Incorporated Systems and methods for generating and modulating illumination conditions
US6967448B2 (en) 1997-08-26 2005-11-22 Color Kinetics, Incorporated Methods and apparatus for controlling illumination
JPH1172515A (en) 1997-08-28 1999-03-16 Iwatsu Electric Co Ltd Broad-band analog insulation circuit
US6873065B2 (en) 1997-10-23 2005-03-29 Analog Devices, Inc. Non-optical signal isolator
US5929400A (en) 1997-12-22 1999-07-27 Otis Elevator Company Self commissioning controller for field-oriented elevator motor/drive system
US5900683A (en) 1997-12-23 1999-05-04 Ford Global Technologies, Inc. Isolated gate driver for power switching device and method for carrying out same
US6509913B2 (en) * 1998-04-30 2003-01-21 Openwave Systems Inc. Configurable man-machine interface
US6043633A (en) * 1998-06-05 2000-03-28 Systel Development & Industries Power factor correction method and apparatus
US6083276A (en) * 1998-06-11 2000-07-04 Corel, Inc. Creating and configuring component-based applications using a text-based descriptive attribute grammar
DE19827755A1 (en) 1998-06-23 2000-03-02 Siemens Ag Hybrid filter for an AC network
IL125328A0 (en) * 1998-07-13 1999-03-12 Univ Ben Gurion Modular apparatus for regulating the harmonics of current drawn from power lines
US6140777A (en) * 1998-07-29 2000-10-31 Philips Electronics North America Corporation Preconditioner having a digital power factor controller
EP1014563B1 (en) 1998-12-14 2006-03-01 Alcatel Amplifier arrangement with voltage gain and reduced power consumption
US6495964B1 (en) * 1998-12-18 2002-12-17 Koninklijke Philips Electronics N.V. LED luminaire with electrically adjusted color balance using photodetector
US6064187A (en) * 1999-02-12 2000-05-16 Analog Devices, Inc. Voltage regulator compensation circuit and method
US6344811B1 (en) * 1999-03-16 2002-02-05 Audio Logic, Inc. Power supply compensation for noise shaped, digital amplifiers
DE10032846A1 (en) * 1999-07-12 2001-01-25 Int Rectifier Corp Power factor correction circuit for a.c.-d.c. power converter varies switch-off time as function of the peak inductance current during each switching period
US6317068B1 (en) 1999-08-23 2001-11-13 Level One Communications, Inc. Method and apparatus for matching common mode output voltage at a switched-capacitor to continuous-time interface
US6181114B1 (en) * 1999-10-26 2001-01-30 International Business Machines Corporation Boost circuit which includes an additional winding for providing an auxiliary output voltage
US7158633B1 (en) 1999-11-16 2007-01-02 Silicon Laboratories, Inc. Method and apparatus for monitoring subscriber loop interface circuitry power dissipation
US6229271B1 (en) * 2000-02-24 2001-05-08 Osram Sylvania Inc. Low distortion line dimmer and dimming ballast
US6246183B1 (en) * 2000-02-28 2001-06-12 Litton Systems, Inc. Dimmable electrodeless light source
US6636107B2 (en) 2000-03-28 2003-10-21 International Rectifier Corporation Active filter for reduction of common mode current
US6970503B1 (en) 2000-04-21 2005-11-29 National Semiconductor Corporation Apparatus and method for converting analog signal to pulse-width-modulated signal
US6693571B2 (en) * 2000-05-10 2004-02-17 Cirrus Logic, Inc. Modulation of a digital input signal using a digital signal modulator and signal splitting
US6304473B1 (en) * 2000-06-02 2001-10-16 Iwatt Operating a power converter at optimal efficiency
US6882552B2 (en) * 2000-06-02 2005-04-19 Iwatt, Inc. Power converter driven by power pulse and sense pulse
DE60101978T2 (en) 2000-06-15 2004-12-23 City University Of Hong Kong Dimmable ECG
US6373340B1 (en) 2000-08-14 2002-04-16 K. S. Waves, Ltd. High-efficiency audio power amplifier
US6636003B2 (en) * 2000-09-06 2003-10-21 Spectrum Kinetics Apparatus and method for adjusting the color temperature of white semiconduct or light emitters
US6407691B1 (en) 2000-10-18 2002-06-18 Cirrus Logic, Inc. Providing power, clock, and control signals as a single combined signal across an isolation barrier in an ADC
US6583550B2 (en) * 2000-10-24 2003-06-24 Toyoda Gosei Co., Ltd. Fluorescent tube with light emitting diodes
FR2815790B1 (en) * 2000-10-24 2003-02-07 St Microelectronics Sa VOLTAGE CONVERTER WITH SELF-SWITCHING CONTROL CIRCUIT
US6343026B1 (en) * 2000-11-09 2002-01-29 Artesyn Technologies, Inc. Current limit circuit for interleaved converters
JP3371962B2 (en) 2000-12-04 2003-01-27 サンケン電気株式会社 DC-DC converter
DE10061563B4 (en) * 2000-12-06 2005-12-08 RUBITEC Gesellschaft für Innovation und Technologie der Ruhr-Universität Bochum mbH Method and apparatus for switching on and off of power semiconductors, in particular for a variable-speed operation of an asynchronous machine, operating an ignition circuit for gasoline engines, and switching power supply
US6441558B1 (en) * 2000-12-07 2002-08-27 Koninklijke Philips Electronics N.V. White LED luminary light control system
EP1215808B1 (en) * 2000-12-13 2011-05-11 Semiconductor Components Industries, LLC A power supply circuit and method thereof to detect demagnitization of the power supply
DE60210217T2 (en) * 2001-01-31 2006-11-16 Matsushita Electric Industrial Co., Ltd., Kadoma SMPS device
KR20020091173A (en) * 2001-02-02 2002-12-05 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Integrated light source
US6653960B2 (en) 2001-03-08 2003-11-25 Shindengen Electric Manufacturing Co., Ltd. Stabilized power supply using delta sigma modulator
US6452521B1 (en) * 2001-03-14 2002-09-17 Rosemount Inc. Mapping a delta-sigma converter range to a sensor range
US6510995B2 (en) * 2001-03-16 2003-01-28 Koninklijke Philips Electronics N.V. RGB LED based light driver using microprocessor controlled AC distributed power system
US6917504B2 (en) * 2001-05-02 2005-07-12 Supertex, Inc. Apparatus and method for adaptively controlling power supplied to a hot-pluggable subsystem
EP1388276B1 (en) 2001-05-10 2011-08-10 Philips Solid-State Lighting Solutions, Inc. Systems and methods for synchronizing lighting effects
AU2002322418A1 (en) * 2001-06-21 2003-01-08 Champion Microelectronic Corp. Current inrush limiting and bleed resistor current inhibiting in a switching power converter
US6628106B1 (en) * 2001-07-30 2003-09-30 University Of Central Florida Control method and circuit to provide voltage and current regulation for multiphase DC/DC converters
IL147578A (en) * 2002-01-10 2006-06-11 Lightech Electronics Ind Ltd Lamp transformer for use with an electronic dimmer and method for use thereof for reducing acoustic noise
WO2003058797A1 (en) * 2002-01-11 2003-07-17 Precisionh2 Inc. Power factor controller
KR100597379B1 (en) 2002-02-08 2006-07-10 산켄덴키 가부시키가이샤 Method for starting power source apparatus, circuit for starting power source apparatus, power source apparatus
GB0204212D0 (en) * 2002-02-22 2002-04-10 Oxley Dev Co Ltd Led drive circuit
SE0201432D0 (en) 2002-04-29 2002-05-13 Emerson Energy Systems Ab A Power supply system and apparatus
US7358679B2 (en) 2002-05-09 2008-04-15 Philips Solid-State Lighting Solutions, Inc. Dimmable LED-based MR16 lighting apparatus and methods
JP4175027B2 (en) * 2002-05-28 2008-11-05 松下電工株式会社 Discharge lamp lighting device
WO2003101086A2 (en) * 2002-05-28 2003-12-04 Koninklijke Philips Electronics N.V. Motion blur decrease in varying duty cycle
US6728121B2 (en) * 2002-05-31 2004-04-27 Green Power Technologies Ltd. Method and apparatus for active power factor correction with minimum input current distortion
EP1367703A1 (en) 2002-05-31 2003-12-03 STMicroelectronics S.r.l. Method of regulation of the supply voltage of a load and relative voltage regulator
US6753661B2 (en) * 2002-06-17 2004-06-22 Koninklijke Philips Electronics N.V. LED-based white-light backlighting for electronic displays
US7339287B2 (en) 2002-06-23 2008-03-04 Powerlynx A/S Power converter
US6756772B2 (en) * 2002-07-08 2004-06-29 Cogency Semiconductor Inc. Dual-output direct current voltage converter
US6860628B2 (en) * 2002-07-17 2005-03-01 Jonas J. Robertson LED replacement for fluorescent lighting
US6781351B2 (en) * 2002-08-17 2004-08-24 Supertex Inc. AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics
US6940733B2 (en) 2002-08-22 2005-09-06 Supertex, Inc. Optimal control of wide conversion ratio switching converters
US6724174B1 (en) * 2002-09-12 2004-04-20 Linear Technology Corp. Adjustable minimum peak inductor current level for burst mode in current-mode DC-DC regulators
KR100470599B1 (en) 2002-10-16 2005-03-10 삼성전자주식회사 Power supply capable of protecting electric device circuit
US6744223B2 (en) * 2002-10-30 2004-06-01 Quebec, Inc. Multicolor lamp system
US6727832B1 (en) * 2002-11-27 2004-04-27 Cirrus Logic, Inc. Data converters with digitally filtered pulse width modulation output stages and methods and systems using the same
JP3830888B2 (en) * 2002-12-02 2006-10-11 オプトレックス株式会社 Driving method of organic EL display device
US6741123B1 (en) * 2002-12-26 2004-05-25 Cirrus Logic, Inc. Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same
US6768655B1 (en) * 2003-02-03 2004-07-27 System General Corp. Discontinuous mode PFC controller having a power saving modulator and operation method thereof
JP3947720B2 (en) * 2003-02-28 2007-07-25 日本放送協会 How to use dimming control lighting device for incandescent lamp
JP4082672B2 (en) 2003-03-06 2008-04-30 株式会社デンソー Electrically isolated switching element drive circuit
US7078963B1 (en) 2003-03-21 2006-07-18 D2Audio Corporation Integrated PULSHI mode with shutdown
US7075329B2 (en) 2003-04-30 2006-07-11 Analog Devices, Inc. Signal isolators using micro-transformers
US7126288B2 (en) 2003-05-05 2006-10-24 International Rectifier Corporation Digital electronic ballast control apparatus and method
JP4072765B2 (en) * 2003-05-12 2008-04-09 日本ビクター株式会社 Power amplifier circuit
US7001036B2 (en) * 2003-05-13 2006-02-21 Universal Plastics Products, Inc. Electroluminescent illumination for a magnetic compass
US6956750B1 (en) 2003-05-16 2005-10-18 Iwatt Inc. Power converter controller having event generator for detection of events and generation of digital error
US6944034B1 (en) 2003-06-30 2005-09-13 Iwatt Inc. System and method for input current shaping in a power converter
EP1876385B1 (en) 2003-07-02 2010-01-06 S.C.Johnson & Son, Inc Lamp and bulb for illumination and ambiance lighting
EP2806530B1 (en) 2003-07-07 2021-04-28 Nippon Telegraph And Telephone Corporation Booster
US6839247B1 (en) * 2003-07-10 2005-01-04 System General Corp. PFC-PWM controller having a power saving means
US6933706B2 (en) * 2003-09-15 2005-08-23 Semiconductor Components Industries, Llc Method and circuit for optimizing power efficiency in a DC-DC converter
JP4107209B2 (en) 2003-09-29 2008-06-25 株式会社村田製作所 Ripple converter
US6958920B2 (en) 2003-10-02 2005-10-25 Supertex, Inc. Switching power converter and method of controlling output voltage thereof using predictive sensing of magnetic flux
ITMI20031987A1 (en) 2003-10-14 2005-04-15 Archimede Elettronica S R L DEVICE AND METHOD FOR CHECKING THE COLOR OF A LIGHTING SOURCE
US7009543B2 (en) * 2004-01-16 2006-03-07 Cirrus Logic, Inc. Multiple non-monotonic quantizer regions for noise shaping
US7034611B2 (en) 2004-02-09 2006-04-25 Texas Instruments Inc. Multistage common mode feedback for improved linearity line drivers
US7142142B2 (en) * 2004-02-25 2006-11-28 Nelicor Puritan Bennett, Inc. Multi-bit ADC with sigma-delta modulation
CN100491810C (en) 2004-03-03 2009-05-27 约翰逊父子公司 LED light bulb for emitting active ingredient
US7266001B1 (en) 2004-03-19 2007-09-04 Marvell International Ltd. Method and apparatus for controlling power factor correction
US7569996B2 (en) 2004-03-19 2009-08-04 Fred H Holmes Omni voltage direct current power supply
US6977827B2 (en) 2004-03-22 2005-12-20 American Superconductor Corporation Power system having a phase locked loop with a notch filter
US7317625B2 (en) 2004-06-04 2008-01-08 Iwatt Inc. Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correction
US7259524B2 (en) 2004-06-10 2007-08-21 Lutron Electronics Co., Inc. Apparatus and methods for regulating delivery of electrical energy
DE602004022518D1 (en) 2004-06-14 2009-09-24 St Microelectronics Srl LED control units with light intensity change
US7109791B1 (en) 2004-07-09 2006-09-19 Rf Micro Devices, Inc. Tailored collector voltage to minimize variation in AM to PM distortion in a power amplifier
US7088059B2 (en) 2004-07-21 2006-08-08 Boca Flasher Modulated control circuit and method for current-limited dimming and color mixing of display and illumination systems
JP4081462B2 (en) 2004-08-02 2008-04-23 沖電気工業株式会社 Display panel color adjustment circuit
JP5078241B2 (en) * 2004-08-13 2012-11-21 株式会社半導体エネルギー研究所 LIGHT EMITTING DEVICE USING LIGHT EMITTING ELEMENT, METHOD FOR DRIVING LIGHT EMITTING ELEMENT AND LIGHTING APPARATUS
JP2006067730A (en) 2004-08-27 2006-03-09 Sanken Electric Co Ltd Power factor improving circuit
US7276861B1 (en) 2004-09-21 2007-10-02 Exclara, Inc. System and method for driving LED
US7292013B1 (en) 2004-09-24 2007-11-06 Marvell International Ltd. Circuits, systems, methods, and software for power factor correction and/or control
CA2521973C (en) 2004-09-29 2013-12-10 Tir Systems Ltd. System and method for controlling luminaires
US20060125420A1 (en) 2004-12-06 2006-06-15 Michael Boone Candle emulation device
GB2421367B (en) 2004-12-20 2008-09-03 Stephen Bryce Hayes Lighting apparatus and method
US7221130B2 (en) 2005-01-05 2007-05-22 Fyrestorm, Inc. Switching power converter employing pulse frequency modulation control
US7102902B1 (en) 2005-02-17 2006-09-05 Ledtronics, Inc. Dimmer circuit for LED
CA2637757A1 (en) 2005-03-03 2006-09-08 Tir Technology Lp Method and apparatus for controlling thermal stress in lighting devices
US7378805B2 (en) 2005-03-22 2008-05-27 Fairchild Semiconductor Corporation Single-stage digital power converter for driving LEDs
US7064531B1 (en) 2005-03-31 2006-06-20 Micrel, Inc. PWM buck regulator with LDO standby mode
US7375476B2 (en) 2005-04-08 2008-05-20 S.C. Johnson & Son, Inc. Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices
DE102006022845B4 (en) 2005-05-23 2016-01-07 Infineon Technologies Ag A drive circuit for a switch unit of a clocked power supply circuit and resonance converter
US7106603B1 (en) 2005-05-23 2006-09-12 Li Shin International Enterprise Corporation Switch-mode self-coupling auxiliary power device
US7336127B2 (en) 2005-06-10 2008-02-26 Rf Micro Devices, Inc. Doherty amplifier configuration for a collector controlled power amplifier
US7388764B2 (en) 2005-06-16 2008-06-17 Active-Semi International, Inc. Primary side constant output current controller
US7145295B1 (en) 2005-07-24 2006-12-05 Aimtron Technology Corp. Dimming control circuit for light-emitting diodes
TWI277225B (en) 2005-08-03 2007-03-21 Beyond Innovation Tech Co Ltd Apparatus of light source and adjustable control circuit for LEDs
CN101292574B (en) 2005-08-17 2012-12-26 皇家飞利浦电子股份有限公司 Digitally controlled luminaire system
WO2007026170A2 (en) 2005-09-03 2007-03-08 E-Light Limited Improvements to lighting systems
US7249865B2 (en) 2005-09-07 2007-07-31 Plastic Inventions And Patents Combination fluorescent and LED lighting system
EP1948356B1 (en) 2005-11-11 2014-01-15 L&L Engineering LLC Non-linear controller for a switching power supply
US7856566B2 (en) 2005-11-29 2010-12-21 Power Integrations, Inc. Standby arrangement for power supplies
US7183957B1 (en) 2005-12-30 2007-02-27 Cirrus Logic, Inc. Signal processing system with analog-to-digital converter using delta-sigma modulation having an internal stabilizer loop
US7656103B2 (en) 2006-01-20 2010-02-02 Exclara, Inc. Impedance matching circuit for current regulation of solid state lighting
US7310244B2 (en) 2006-01-25 2007-12-18 System General Corp. Primary side controlled switching regulator
KR100755624B1 (en) 2006-02-09 2007-09-04 삼성전기주식회사 Liquid crystal display of field sequential color mode
WO2007094810A2 (en) 2006-02-10 2007-08-23 Color Kinetics Incorporated Methods and apparatus for high power factor controlled power delivery using a single switching stage per load
CN101127495B (en) 2006-08-16 2010-04-21 昂宝电子（上海）有限公司 System and method for switch power supply control
US7733034B2 (en) 2006-09-01 2010-06-08 Broadcom Corporation Single inductor serial-parallel LED driver
DE602006010716D1 (en) 2006-10-11 2010-01-07 Mitsubishi Electric Corp Clock generator with distributed period
US7864546B2 (en) 2007-02-13 2011-01-04 Akros Silicon Inc. DC-DC converter with communication across an isolation pathway
US7675759B2 (en) 2006-12-01 2010-03-09 Flextronics International Usa, Inc. Power system with power converters having an adaptive controller
US7667986B2 (en) 2006-12-01 2010-02-23 Flextronics International Usa, Inc. Power system with power converters having an adaptive controller
KR101357006B1 (en) 2007-01-18 2014-01-29 페어차일드코리아반도체 주식회사 Converter and the driving method thereof
US8362838B2 (en) 2007-01-19 2013-01-29 Cirrus Logic, Inc. Multi-stage amplifier with multiple sets of fixed and variable voltage rails
JP5089193B2 (en) * 2007-02-22 2012-12-05 株式会社小糸製作所 Light emitting device
US7852017B1 (en) 2007-03-12 2010-12-14 Cirrus Logic, Inc. Ballast for light emitting diode light sources
US7288902B1 (en) 2007-03-12 2007-10-30 Cirrus Logic, Inc. Color variations in a dimmable lighting device with stable color temperature light sources
US7560677B2 (en) 2007-03-13 2009-07-14 Renaissance Lighting, Inc. Step-wise intensity control of a solid state lighting system
GB2447873B (en) 2007-03-30 2009-07-29 Cambridge Semiconductor Ltd Forward power converter controllers
US7480159B2 (en) 2007-04-19 2009-01-20 Leadtrend Technology Corp. Switching-mode power converter and pulse-width-modulation control circuit with primary-side feedback control
US7554473B2 (en) 2007-05-02 2009-06-30 Cirrus Logic, Inc. Control system using a nonlinear delta-sigma modulator with nonlinear process modeling
US7974109B2 (en) 2007-05-07 2011-07-05 Iwatt Inc. Digital compensation for cable drop in a primary side control power supply controller
US7656687B2 (en) 2007-12-11 2010-02-02 Cirrus Logic, Inc. Modulated transformer-coupled gate control signaling method and apparatus
US7821333B2 (en) 2008-01-04 2010-10-26 Texas Instruments Incorporated High-voltage differential amplifier and method using low voltage amplifier and dynamic voltage selection
US7750738B2 (en) 2008-11-20 2010-07-06 Infineon Technologies Ag Process, voltage and temperature control for high-speed, low-power fixed and variable gain amplifiers based on MOSFET resistors
US7994863B2 (en) 2008-12-31 2011-08-09 Cirrus Logic, Inc. Electronic system having common mode voltage range enhancement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040046680A1 (en) * 2001-09-28 2004-03-11 Toshihiko Masuda Delta-sigma modulation apparatus and signal amplification apparatus
US20050218838A1 (en) * 2004-03-15 2005-10-06 Color Kinetics Incorporated LED-based lighting network power control methods and apparatus
US20060261754A1 (en) * 2005-05-18 2006-11-23 Samsung Electro-Mechanics Co., Ltd. LED driving circuit having dimming circuit
US20070024213A1 (en) * 2005-07-28 2007-02-01 Synditec, Inc. Pulsed current averaging controller with amplitude modulation and time division multiplexing for arrays of independent pluralities of light emitting diodes
WO2007139975A1 (en) * 2006-05-26 2007-12-06 Lumificient Technologies, Llc Current regulator apparatus and methods
WO2008068682A1 (en) * 2006-12-04 2008-06-12 Nxp B.V. Electronic device for driving light emitting diodes
US20080224914A1 (en) * 2007-03-14 2008-09-18 Sanyo Electric Co., Ltd. Integrated Circuit for Analog-to-Digital Conversion

Also Published As

Publication number Publication date
WO2010025450A2 (en) 2010-03-04
GB2474994B (en) 2013-01-09
CN102282912A (en) 2011-12-14
CN104936355B (en) 2018-06-15
US20100156319A1 (en) 2010-06-24
GB201102839D0 (en) 2011-04-06
CN102282912B (en) 2015-07-29
CN104955235B (en) 2018-02-27
CN104955235A (en) 2015-09-30
US20130300309A1 (en) 2013-11-14
US8742684B2 (en) 2014-06-03
GB2474994A (en) 2011-05-04
US8487546B2 (en) 2013-07-16
CN104936355A (en) 2015-09-23

Similar Documents

Publication Publication Date Title
WO2010025450A3 (en) Led lighting system with accurate current control
WO2010022182A3 (en) Led backlight
WO2008022270A3 (en) Method and apparatus for controlling an input voltage to a light emitting diode
WO2010150119A3 (en) System and method for controlling led cluster
WO2009041438A1 (en) Dimming device and lighting device using same
EP2364064A3 (en) LED lighting device
WO2014008062A3 (en) Systems and methods for low-power lamp compatibility with a leading-edge dimmer and a magnetic transformer
TW200738061A (en) LED driving apparatus with temperature compensation function
TW200632825A (en) Backlight driving device, backlight driving method, and liquid crystal display device
WO2008112822A3 (en) Lighting system with power factor correction control data determined from a phase modulated signal
WO2014133349A3 (en) Control circuit of light-emitting diode lighting device
EP1986470A3 (en) Apparatus amd method to provide a hybrid linear/switching current source, such as for high-efficiency, wide dimming range light emitting diode (LED) backlighting
WO2010083171A3 (en) Method and device for remote sensing and control of led lights
WO2010035155A3 (en) Driver for providing variable power to a led array
WO2014022351A3 (en) Dimming control method and apparatus for led light source
ATE495569T1 (en) CONTROL FOR POWER FACTOR CORRECTION WITH AN AUTOMATIC MACHINE FOR ADJUSTING THE DUTY RATIO OF A PWM CONTROL SIGNAL
WO2008137460A3 (en) High power factor led-based lighting apparatus and methods
EP1808947A3 (en) Isolated operation detecting method, control apparatus for detecting isolated operation for distributed power supply, isolated operation detecting apparatus, and distributed power supply
EP1998154A3 (en) Solar Simulator
MX2012004061A (en) Closed-loop load control circuit having a wide output range.
MY153797A (en) Power supply and demand control apparatus and power supply and demand control method
GB201120581D0 (en) Lighting system with ambient light monitoring
WO2009041100A1 (en) Backlight unit and display apparatus
WO2009017156A1 (en) Image display device, control method of image display device, and adjustment system of image display device
EP2336558A3 (en) Method of operating a variable speed wind turbine

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980143361.9

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09792105

Country of ref document: EP

Kind code of ref document: A2

ENP Entry into the national phase

Ref document number: 1102839

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20090831

WWE Wipo information: entry into national phase

Ref document number: 1102839.6

Country of ref document: GB

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09792105

Country of ref document: EP

Kind code of ref document: A2