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1. WO2016189049 - AN LED DRIVER CIRCUIT, AND LED ARRANGEMENT AND A DRIVING METHOD

Publication Number WO/2016/189049
Publication Date 01.12.2016
International Application No. PCT/EP2016/061832
International Filing Date 25.05.2016
IPC
H05B 33/08 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
08Circuit arrangements for operating electroluminescent light sources
H02M 3/338 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
338in a self-oscillating arrangement
CPC
H02M 3/33507
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33507with automatic control of the output voltage or current
H02M 3/3381
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
338in a self-oscillating arrangement
3381using a single commutation path
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 45/3725
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
3725Switched mode power supply [SMPS]
H05B 45/385
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
3725Switched mode power supply [SMPS]
385using flyback topology
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
  • PHILIPS LIGHTING HOLDING B.V. [NL]/[NL]
Inventors
  • ZHANG, Hui
  • CLAESSENS, Dennis, Johannes, Antonius
Agents
  • VAN EEUWIJK, Alexander, Henricus, Walterus
Priority Data
15192086.529.10.2015EP
PCT/CN2015/08004328.05.2015CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AN LED DRIVER CIRCUIT, AND LED ARRANGEMENT AND A DRIVING METHOD
(FR) CIRCUIT D'ENTRAÎNEMENT DE DEL, ET AGENCEMENT DE DEL ET PROCÉDÉ D'ENTRAÎNEMENT
Abstract
(EN)
The invention provides a driver circuit for driving an LED arrangement which uses a switch mode power converter, for example a flyback ringing choke converter, which comprises a main switch (e.g. bipolar transistor) and a sub-circuit for generating a current for the control terminal of the main switch. The sub-circuit in some examples makes use of an auxiliary winding as a voltage supply, and further comprises a ramp circuit for generating a ramp voltage from the voltage supply and a voltage follower, such as a control transistor, connected between the voltage supply and the control input of the main switch. By ramping up the current of the main switch, the losses arising as a result of the current flowing to the control input of the main switch are reduced. One set of examples makes use of a flyback ringing choke converter, which enables low cost implementation and good efficiency. The driver is able to receive a wide range of input voltages, by ensuring that the power loss is kept low. In particular, by ramping up the control current of the main switch, the losses arising as a result of the current flowing are reduced.
(FR)
L'invention concerne un circuit d'entraînement pour entraîner un agencement de DEL qui utilise un convertisseur de puissance à mode de commutation, par exemple un convertisseur d'appel à bobine d'arrêt à transfert indirect, qui comprend un commutateur principal (par exemple, transistor bipolaire) et un sous-circuit destiné à produire un courant pour la borne de commande du commutateur principal. Le sous-circuit, selon certains exemples, utilise un enroulement auxiliaire comme alimentation en tension, et comprend en outre un circuit de rampe pour produire une tension de rampe à partir de l'alimentation en tension et un suiveur de tension, tel qu'un transistor de commande, connecté entre l'alimentation en tension et l'entrée de commande du commutateur principal. Grâce à l'accélération du courant du commutateur principal, les pertes survenant du courant circulant jusqu'à l'entrée de commande du commutateur principal sont réduites. Un ensemble d'exemples utilise un convertisseur d'appel à bobine d'arrêt à transfert indirect, qui permet une mise en oeuvre à faible coût et une bonne efficacité. Le circuit d'entraînement peut recevoir une large gamme de tensions d'entrée, en s'assurant que la perte de puissance est maintenue à un faible niveau. En particulier, grâce à l'accélération du courant de commande du commutateur principal, les pertes résultant de la circulation de courant sont réduites.
Also published as
IN201747046570
Latest bibliographic data on file with the International Bureau