Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2008-07-08
2008-07-08
Zweizig, Jeffrey S (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
Reexamination Certificate
active
11320507
ABSTRACT:
An exponential charge pump uses a number of identical or similar charging stages, each having a first and second capacitor. During a first clock phase, the first capacitor of each stage is charged by the second capacitor of the preceding stage, and, during a complementary second clock phase, the positive plate of the first capacitor of each stage is pushed to an increased voltage by the first capacitor of the preceding stage and charges the second capacitor of the next stage to the increased voltage at the same time. A similar mechanism occurs to the second capacitors in each stage, but with complementary timing. The increased voltage of the first capacitor of the last stage is pumped to an output capacitor during the second clock phase, and the increased voltage of the second capacitor of the last stage is pumped to an output capacitor during the first clock phase.
REFERENCES:
patent: 5436587 (1995-07-01), Cernea
patent: 5801577 (1998-09-01), Tailliet
patent: 5877948 (1999-03-01), Dijkmans
patent: 6278318 (2001-08-01), Watanabe
patent: 6642775 (2003-11-01), Imamiya
patent: 6861894 (2005-03-01), Cernea
patent: 6922096 (2005-07-01), Cernea
patent: 7113023 (2006-09-01), Cernea
Ki Wing Hung
Lam Yet Hei
Su Feng
Tsui Chi Ying
Schwabe Williamson & Wyatt P.C.
The Hong kong University of Science and Technology
Zweizig Jeffrey S
LandOfFree
N-stage exponential charge pumps, charging stages therefor... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with N-stage exponential charge pumps, charging stages therefor..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and N-stage exponential charge pumps, charging stages therefor... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3924674