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:
Mar. 27, 2007
Filed:
May. 06, 2005
Ralf Schneider, München, DE;
Stephan Schröder, München, DE;
Manfred Pröll, Dorfen, DE;
Jörg Kliewer, München, DE;
Ralf Schneider, München, DE;
Stephan Schröder, München, DE;
Manfred Pröll, Dorfen, DE;
Jörg Kliewer, München, DE;
Infineon Technologies, AG, Munich, DE;
Abstract
An integrated circuit includes an input terminal (IN) for application of a supply voltage (Vext) and an output terminal (A) for generation of an output voltage (Vout). A first branch including a first controllable resistance (T) and a second branch including a charge pump () and a second controllable resistance (T) are connected between the input terminal (IN) and the output terminal (A). A control circuit () alters the resistance values of the first and second controllable resistances (T, T) in a manner dependent on a ratio of an actual value (Vout) of the output voltage to a desired value (VSout) of the output voltage and a ratio of an actual value (Vext) of the supply voltage to a desired value (VSext) of the supply voltage. As a result, the output voltage (Vout) can be stabilized to the desired value (VSout) virtually independently of fluctuations of the supply voltage.