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1. WO2016154169 - VOLTAGE BALANCING CURRENT CONTROLLED LED CIRCUIT

Publication Number WO/2016/154169
Publication Date 29.09.2016
International Application No. PCT/US2016/023515
International Filing Date 22.03.2016
IPC
H05B 37/02 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
37Circuit arrangements for electric light sources in general
02Controlling
CPC
H05B 45/22
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
20Controlling the colour of the light
22using optical feedback
H05B 45/37
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
37Converter circuits
H05B 45/46
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
40Details of LED load circuits
44with an active control inside an LED matrix
46having LEDs disposed in parallel lines
Y02B 20/30
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
20Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Applicants
  • HUBBELL INCORPORATED [US]/[US]
Inventors
  • WEEKS, JR., T. Warren
  • CLAWSON, Thomas N.
  • HAMILTON, Douglas M.
Agents
  • WORKMAN, J., Parks
Priority Data
14/667,02324.03.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VOLTAGE BALANCING CURRENT CONTROLLED LED CIRCUIT
(FR) CIRCUIT À DEL COMMANDÉ À COURANT D'ÉQUILIBRAGE DE TENSION
Abstract
(EN)
Systems and methods for balancing voltage in LED circuits are provided. An LED circuit can have a plurality of LED strings coupled in parallel with one another. Each LED string can include a plurality of LED devices coupled in series. The LED strings can receive a driver current from a driver circuit. According to example embodiments of the present disclosure, at least one of the plurality of LED strings can include a constant current regulator circuit coupled in series with the LED string. The constant current regulator circuit can provide a constant current through the LED string. The balance or remainder of the driver current can be provided to the other LED string. The constant current regulator circuit can provide for voltage balancing among the plurality of parallel LED strings.
(FR)
Systèmes et procédés d'équilibrage de tension dans des circuits à DEL. Un circuit à DEL peut comporter une pluralité de bandes de DEL couplées parallèlement les unes aux autres. Chaque bande de DEL peut comprendre une pluralité de dispositifs à DEL couplés en série. Les bandes de DEL peuvent recevoir un courant d'attaque provenant d'un circuit d'attaque. Selon des exemples de modes de réalisation de la présente invention, au moins une bande de la pluralité de bandes de DEL peut comprendre un circuit régulateur de courant constant couplé en série à la bande de DEL. Le circuit régulateur de courant constant peut apporter un courant constant dans la bande de DEL. Le reste du courant d'attaque peut être apporté à l'autre bande de DEL. Le circuit régulateur de courant constant peut permettre un équilibrage de tension entre la pluralité de bandes de DEL parallèles.
Also published as
Latest bibliographic data on file with the International Bureau