Decoupling capacitor control circuit and method for enhanced...

Details Decoupling capacitor control circuit and method for enhanced... Decoupling capacitor control circuit and method for enhanced...

2007-03-22

2009-02-24

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

C361S056000, C361S091100

Reexamination Certificate

active

07495878

ABSTRACT:
A decoupling capacitor control circuit is configured to be coupled between supply voltage and reference voltage planes. The control circuit includes a decoupling capacitor having a first node configured to be coupled to the supply voltage plane and having a second node. A first switching element has a first signal node coupled to the second node of the decoupling capacitor and has a second signal node and a control node. A second switching element has a first signal node coupled to the first node of the decoupling capacitor and has a second signal node coupled to the control node of the first switching element, and has a control node. A biasing circuit is coupled to the control nodes of the first and second switching elements. The biasing circuit activates both switching elements when the decoupling capacitor is not defective and deactivates both switching elements when the decoupling capacitor is defective.

REFERENCES:
patent: 5506457 (1996-04-01), Krauter et al.
patent: 5587685 (1996-12-01), Johansson
patent: 5789964 (1998-08-01), Voldman
patent: 5828259 (1998-10-01), Cases et al.
patent: 6084464 (2000-07-01), Lin
patent: 6307250 (2001-10-01), Krauter et al.

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