High-voltage generating circuit including charge transfer...

Details High-voltage generating circuit including charge transfer... High-voltage generating circuit including charge transfer...

2007-02-23

2009-02-17

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

C327S390000

Reexamination Certificate

active

07492213

ABSTRACT:
Provided are a charge transfer switch circuit for selectively controlling body bias voltage of a charge transfer device, and a boosted voltage generating circuit having the same. The charge transfer switch circuit may include a capacitor whose voltage is boosted based on first and second control signals, a first transistor connected between a supply voltage and the capacitor and having a gate receiving a precharge signal, a second transistor connected between a first node and a second node and having a gate connected to a terminal of the capacitor, a third transistor connected between the first node and a bulk voltage of the second transistor and having a gate receiving the first control signal, and a fourth transistor connected between the bulk voltage of the second transistor and a ground voltage and having a gate receiving the second control signal.

REFERENCES:
patent: 6683488 (2004-01-01), Jin
patent: 6693480 (2004-02-01), Wong
patent: 6812774 (2004-11-01), Kim
patent: 7295058 (2007-11-01), Kook et al.
patent: 7411318 (2008-08-01), Kimura
patent: 2000-236658 (2000-08-01), None
patent: 1020010009333 (2001-05-01), None
patent: 1020040076336 (2004-09-01), None
patent: 1020050040072 (2005-05-01), None
patent: 1020060018047 (2006-02-01), None
Office Action for corresponding Korean Application dated Jan. 29, 2007.

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