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1. WO2002097988 - OPTIMIZED ON/OFF CONTROL CIRCUIT

Publication Number WO/2002/097988
Publication Date 05.12.2002
International Application No. PCT/IB2002/001949
International Filing Date 30.05.2002
IPC
H01H 47/18 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
47Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
02for modifying the operation of the relay
18for introducing delay in the operation of the relay
H03K 17/284 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and -breaking
28Modifications for introducing a time delay before switching
284in field-effect transistor switches
CPC
H01H 47/18
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
47Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
02for modifying the operation of the relay
18for introducing delay in the operation of the relay
H02M 3/07
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
06using resistors or capacitors, e.g. potential divider
07using capacitors charged and discharged alternately by semiconductor devices with control electrode ; , e.g. charge pumps
H03K 17/284
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
28Modifications for introducing a time delay before switching
284in field effect transistor switches
Y10S 323/904
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
323Electricity: power supply or regulation systems
904Touch systems
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL]
Inventors
  • YI, Xinchun
Agents
  • DUIJVESTIJN, Adrianus, J.
Priority Data
09/873,07401.06.2001US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) OPTIMIZED ON/OFF CONTROL CIRCUIT
(FR) CIRCUIT DE COMMANDE DE MARCHE/ARRET OPTIMISE
Abstract
(EN) An on/off control circuit is provided that controls the application of power to a device. The effectiveness of the on/off control circuit is optimized with regard to cost, power consumption, component life, and utility. An R-C circuit is used to provide a time-delayed turn-on, and turn-off, of the device being controlled, accompanied by a latch that retains the on/off state and controls the coupling of a power source to the device being controlled. The latch is configured as a data flip-flop (DFF) with a clocking signal that is controlled by the time-delayed switch input. The flip-flop has an inverted output signal as its input, thereby providing a toggled on/off operation. The latch also includes an independent reset input, thereby allowing an independent turn-off operation by power management controllers within the device being controlled. In the quiescent state, the preferred embodiment consumes less than half a microWatt of power.
(FR) L'invention concerne un circuit de commande de marche/arrêt commandant l'application d'une puissance à un dispositif. L'efficacité dudit circuit de commande de marche/arrêt est optimisée par rapport au coût, à la consommation de puissance, à la durée de vie d'un composant et à son utilité. On utilise un circuit à résistance-condensateur pour retarder la marche et l'arrêt du dispositif commandé en association avec verrou qui maintient l'état de marche ou d'arrêt, et commande le couplage d'une source d'alimentation avec le dispositif commandé. Ledit verrou est configuré sous forme de circuit bistable à déclenchement de données (DFF) doté d'un signal d'horloge commandé par une entrée de commutateur retardée. Ledit circuit bistable à déclenchement comprend un signal de sortie inversé comme son entrée, ce qui entraîne une bascule de l'opération de marche/arrêt. Le verrou comprend également une entrée de remise à l'état initial indépendante, ce qui permet d'effectuer une opération d'arrêt indépendante à l'aide de contrôleurs de gestion de puissance disposés dans le dispositif commandé. A l'état de repos, le mode de réalisation préféré consomme une puissance de moins d'un microwatt.
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