The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 2000
Filed:
Jul. 26, 1999
Martin Bloch, Grobenzell, DE;
Christl Lauterbach, Hohenkirchen-Siegertsbrunn, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A circuit configuration for producing negative voltages includes a first transistor having a first connection connected to an input connection, a second connection connected to an output connection of the circuit configuration and a gate connection connected through a first capacitor to a first clock signal connection. A second transistor has a first connection connected to the gate connection of the first transistor, a second connection connected to the second connection of the first transistor and a gate connection connected to the first connection of the first transistor. A second capacitor has a first connection connected to the second connection of the first transistor and a second connection connected to a second clock signal connection. The transistors are MOS transistors produced in a triple well. A third transistor has a first connection connected to the second connection of the first transistor, a second connection connected to the well(s) containing the transistors and a gate connection connected to the first connection of the first transistor. A charge pump having at least two of the circuit configurations and a method of operating the charge pump are also provided.