Charge pump circuit suitable for low-voltage process

Details Charge pump circuit suitable for low-voltage process Charge pump circuit suitable for low-voltage process

2006-12-05

2006-12-05

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C326S044000

Reexamination Certificate

active

07145382

ABSTRACT:
The present invention discloses a charge pump circuit suitable for a low-voltage process. The charge pump circuit is composed of stages of the voltage amplifying circuits connected each other, and the operation of two adjacent stages of voltage amplifying circuit is controlled by two opposite set of the timing signals. Each stage of the voltage amplifying circuit has a coupled pair of a first complementary MOS (CMOS) transistor and a second CMOS transistor switching in accordance with a timing signal and an inverse timing signal inputted into the first and second capacitors. Then, two diode devices guide charges to next stage, and a voltage higher than the integrated circuit voltage source is outputted. The present invention has advantage of high pumping gain, and the reliability issue of the gate oxide layer in the low-voltage process can be also solved.

REFERENCES:
patent: 5625544 (1997-04-01), Kowshik et al.
patent: 6100752 (2000-08-01), Lee et al.
patent: 6278315 (2001-08-01), Kim
patent: 6459328 (2002-10-01), Sato
patent: 6476666 (2002-11-01), Palusa et al.
patent: 6664846 (2003-12-01), Maung et al.
patent: 6690227 (2004-02-01), Lee et al.
patent: 6812773 (2004-11-01), Chou
patent: 6914791 (2005-07-01), Park et al.

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