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1. WO2013006272 - ELECTRONIC CIRCUITS AND TECHNIQUES FOR IMPROVING A SHORT DUTY CYCLE BEHAVIOR OF A DC-DC CONVERTER DRIVING A LOAD

Publication Number WO/2013/006272
Publication Date 10.01.2013
International Application No. PCT/US2012/043275
International Filing Date 20.06.2012
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
CPC
H05B 31/50
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
31Electric arc lamps
48having more than two electrodes
50specially adapted for ac
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 45/46
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
H05B 45/50
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
50responsive to malfunctions of LEDs; responsive to LED life; Protective circuits
Applicants
  • ALLEGRO MICROSYSTEMS, LLC [US]/[US] (AllExceptUS)
  • SZCZESZYNSKI, Gregory [US]/[US] (UsOnly)
Inventors
  • SZCZESZYNSKI, Gregory
Agents
  • ROBINSON, Kermit
Priority Data
13/177,07006.07.2011US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRONIC CIRCUITS AND TECHNIQUES FOR IMPROVING A SHORT DUTY CYCLE BEHAVIOR OF A DC-DC CONVERTER DRIVING A LOAD
(FR) CIRCUITS ÉLECTRONIQUES ET TECHNIQUES POUR AMÉLIORER UN COMPORTEMENT DE CYCLE DE SERVICE COURT D'UN CONVERTISSEUR CC/CC ATTAQUANT UNE CHARGE
Abstract
(EN)
An electronic circuit, referred to as an on-time extension circuit herein, provides an ability to adjust a power delivered to a load by pulsing a predetermined current to the load. The on time of the a DC-DC converter used to provide the power iS extended to be longer than the on time of the current pulse when the on time of the current pulses becomes very short.
(FR)
L'invention concerne un circuit électronique, désigné dans la présente par circuit d'extension de temps de marche, qui fournit une capacité à ajuster une puissance fournie à une charge par pulsation d'un courant prédéterminé vers la charge. Le temps de marche du convertisseur CC/CC utilisé pour fournir la puissance est prolongé pour être plus long que le temps de marche de l'impulsion courante lorsque le temps de marche des impulsions courantes devient très court.
Also published as
Latest bibliographic data on file with the International Bureau