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:
Dec. 19, 2000
Filed:
Nov. 04, 1998
Applicant:
Inventors:
Gerhard Fiedler, Neckartailfingen, DE;
Wolfgang Rentz, Neckartenzlingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
327536 ; 327531 ; 363 60 ;
Abstract
A charge pump, to generate a voltage (overvoltage) greater than the supply voltage, includes disk capacitors triggered via an oscillator circuit, the first terminals of the disk capacitors being connected to the oscillator circuit and their second terminals being wired together in a node to which the overvoltage is applied. The oscillator circuit includes an R-C phase shifter oscillator at whose outputs three output signals, phase shifted 120.degree., are applied, and the outputs are connected to disk capacitors via differential voltage current amplifiers.