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1. WO2010003822 - VOLTAGE CONVERSION CIRCUIT AND VOLTAGE CONVERSION METHOD

Publication Number WO/2010/003822
Publication Date 14.01.2010
International Application No. PCT/EP2009/057923
International Filing Date 24.06.2009
Chapter 2 Demand Filed 07.05.2010
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 3/156 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
02without intermediate conversion into ac
04by static converters
10using discharge tubes with control electrode or semiconductor devices with control electrode
145using devices of a triode or transistor type requiring continuous application of a control signal
155using semiconductor devices only
156with automatic control of output voltage or current, e.g. switching regulators
CPC
H02M 3/156
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
02without intermediate conversion into ac
04by static converters
10using discharge tubes with control electrode or semiconductor devices with control electrode
145using devices of a triode or transistor type requiring continuous application of a control signal
155using semiconductor devices only
156with automatic control of output voltage or current, e.g. switching regulators
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
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
  • AUSTRIAMICROSYSTEMS AG [AT]/[AT] (AllExceptUS)
  • POIRIER, Sébastien [FR]/[ES] (UsOnly)
Inventors
  • POIRIER, Sébastien
Agents
  • EPPING HERMANN FISCHER PATENTANWALTSGESELLSCHAFT MBH
Priority Data
08012336.708.07.2008EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VOLTAGE CONVERSION CIRCUIT AND VOLTAGE CONVERSION METHOD
(FR) CIRCUIT DE CONVERSION DE TENSION ET PROCÉDÉ DE CONVERSION DE TENSION
Abstract
(EN)
A voltage conversion circuit comprises a first and a second output (O1, O2) which are configured to have an electric load (LD) connected in between, wherein an output signal between the first and a second output (O1, O2) is generated in response to a pulse-width modulated clock signal (PWM). The circuit further comprises a forward branch (FWD) being configured to generate an output voltage (VDC) at the first output (O1) depending on a control signal. A feedback branch (FBK) comprises a comparison circuit (CC) being configured to generate the control signal. The feedback branch (FBK) is configured to provide a first potential corresponding to a voltage (VSINK) at a second output (O2) to a comparison input (CI) of the comparison circuit (CC) during a first sensing period which corresponds to at least a part of a period of a first state of the clock signal (PWM) and to provide a second potential derived from the voltage (VSINK) at a second output (O2) by means of a first charge store (C1) to the comparison input (CI) during a second sensing period which corresponds to a part of a period of a second state of the clock signal (PWM).
(FR)
L’invention concerne un circuit de conversion tension comprenant des première et deuxième sorties (O1, O2) qui sont configurées pour avoir une charge électrique (LD) connectée entre elles, un signal de sortie entre les première et deuxième sorties (O1, O2) étant généré en réponse à un signal d’horloge à modulation de largeur d’impulsion (PWM). Le circuit comprend en outre une branche directe (FWD) configurée pour générer une tension de sortie (VDC) sur la première sortie (O1) en fonction d’un signal de commande. Une branche de rétroaction (FBK) comprend un circuit de comparaison (CC) configuré pour générer le signal de commande. La branche de rétroaction (FBK) est configurée pour délivrer un premier potentiel, correspondant à une tension (VSINK) à la deuxième sortie (O2), à une entrée de comparaison (CI) du circuit de comparaison (CC) durant une première période de détection qui correspond à au moins une partie d’une période d’un premier état du signal d’horloge (PWM) et pour délivrer un deuxième potentiel, dérivé de la tension (VSINK) sur la deuxième sortie (O2) au moyen d’une première réserve de charge (C1), à l’entrée de comparaison (CI) durant une deuxième période de détection qui correspond à une partie d’une période d’un deuxième état du signal d’horloge (PWM).
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