Method and apparatus for providing an ultra low power...

H - Electricity – 02 – M

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H02M 3/18 (2006.01) G05F 3/24 (2006.01) G11C 5/14 (2006.01) G11C 8/00 (2006.01) G11C 16/30 (2006.01) H02M 3/07 (2006.01)

Patent

CA 2185333

A circuit for providing a regulated output voltage from a charge pump circuit (51) while utilizing very low amounts of power, the circuit including a clock circuit (55) for providing clock pulses to operate the charge pump circuit to produce an output voltage, a bias circuit (54, 56-60) for monitoring the output voltage of the charge pump and furnishing signals for enabling the clock circuit in response to an insufficient output voltage, and circuitry (63-67, 69) for enabling the bias circuit during a fraction of the tool operating time available to the charge pump.

Circuit permettant la production d'une tension de sortie régulée à partir d'une pompe à charge (51) utilisant des quantités très faibles de puissance. Ledit circuit comporte un circuit d'horloge (55) qui fournit des impulsions d'horloge destinées à faire fonctionner le circuit de pompe à charge pour produire une tension de sortie, un circuit de polarisation (54, 56-60) destiné à contrôler la tension de sortie de la pompe à charge et à fournir des signaux permettant la mise en service du circuit d'horloge en réponse à une tension de sortie insuffisante, et un circuit (63-67, 69) permettant la mise en service du circuit de polarisation pendant une fraction du temps de fonctionnement de l'ordinateur à disposition de la pompe à charge.

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