Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2008-01-08
2008-01-08
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C363S059000, C363S060000
Reexamination Certificate
active
07317347
ABSTRACT:
A two-phase charge pump is provided that is capable of being controlled by first and second clock signals that are out-of-phase and take alternatively a first value and a second value during consecutive phases. The charge pump includes a sequence of cascade-connected stages that each have a first section and a second section. Each section includes an input terminal and an output terminal, a capacitive element, and a controlled switch coupling the input terminal of the section with the output terminal of the section. The input terminals in each stage other than the first stage are cross-coupled with the output terminals in a preceding stage. The capacitive element has first and second terminals. The first terminals in the first and second sections receive the first and second clock signals, respectively, and the second terminal is coupled with the output terminal of the section. The controlled switch has a control terminal. In each stage, the control terminals are coupled to each other. The first section further includes a first control circuit coupling the control terminal with the output terminal of the first section during the first phase, and the second section further includes a second control circuit coupling the control terminal with the input terminal of the second section during the second phase.
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Colalongo Luigi
Kovacs-Vajna Zsolt Miklos
Mensi Luca
Richelli Anna
Bongini Stephen
Fleit Kain Gibbons Gutman Bongini & Bianco P.L.
Hiltunen Thomas J.
Jorgenson Lisa K.
STMicroelectronics S.r.l.
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