Low voltage charge pump

Details Low voltage charge pump Low voltage charge pump

2007-05-25

2008-11-04

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

07446596

ABSTRACT:
A single pump stage of a multi-stage charge pump couples a first low-voltage NMOS transistor in series with a first low-voltage PMOS transistor between charge transfer capacitors. A second low-voltage NMOS transistor is coupled between the gate and the source of the first NMOS transistor. A second low-voltage PMOS transistor is coupled between the gate and the source of the first PMOS transistor. Respective boost voltages are applied to gates of the first NMOS transistor and the second PMOS transistor to minimize threshold voltage losses. A stabilizing capacitor is connected between the first NMOS transistor and the second PMOS transistor.

REFERENCES:
patent: 6307425 (2001-10-01), Chevallier et al.
patent: 6492861 (2002-12-01), Rey et al.
patent: 7030683 (2006-04-01), Pan et al.
patent: 7046076 (2006-05-01), Daga et al.
patent: 7365591 (2008-04-01), Tobita
patent: 7382177 (2008-06-01), Cordoba et al.

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