Charge pump circuit using active feedback controlled current...

Details Charge pump circuit using active feedback controlled current... Charge pump circuit using active feedback controlled current...

2005-12-27

2005-12-27

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S537000, C327S538000, C327S540000, C327S157000, C363S059000, C363S060000

Reexamination Certificate

active

06980046

ABSTRACT:
A charge pump circuit utilizes active feedback control circuits to control the currents produced by sinking and sourcing current sources. The feedback control circuits may regulate the drain voltages of sinking and sourcing current source transistors to make them approximately equal to respective reference voltages received by the feedback control circuits. The charge pump circuit may utilize multiple supply voltages, with a higher supply voltage such as a 3.3 V supply voltage being used to drive current source transistors, and a lower supply voltage such as a 1.8 V supply voltage being used to drive switches in a switching section.

REFERENCES:
patent: 6107889 (2000-08-01), Strange et al.
patent: 6329872 (2001-12-01), Foroudi
patent: 6396334 (2002-05-01), Aram
patent: 6566923 (2003-05-01), Pettersen
patent: 6608511 (2003-08-01), Hsu
patent: 6611161 (2003-08-01), Kumar et al.
patent: 6664829 (2003-12-01), Hughes
patent: 6768359 (2004-07-01), Hsu
patent: 6781425 (2004-08-01), Si

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