Negative supply voltage generating circuit and semiconductor...

Details Negative supply voltage generating circuit and semiconductor... Negative supply voltage generating circuit and semiconductor...

2011-05-24

2011-05-24

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C363S060000, C365S226000

Reexamination Certificate

active

07948300

ABSTRACT:
A negative supply voltage generating circuit includes a pulse generating circuit and a charge pump. The pulse generating circuit generates a first pulse signal and a second pulse signal in response to a clock signal. The first and second pulse signals have pulse widths different from each other. The charge pump generates a negative supply voltage by performing a charge pumping operation in response to the first and second pulse signals, and has a time interval between a switch-on time duration for charging a flying capacitor and a switch-on time duration for transmitting charges to an output capacitor.

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patent: 6838922 (2005-01-01), Melcher
patent: 7760010 (2010-07-01), Gebara et al.
patent: 2007/0096796 (2007-05-01), Firmansyah et al.
patent: 2004229434 (2004-08-01), None
patent: 100632922 (2006-09-01), None
patent: 100747212 (2007-08-01), None

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