Patent · US Expired

Integrated circuit for stabilizing a voltage

US7196572B2 · kind B2 · utility

2Cited by

7References

17Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Ralf Schneider · Birkenfeld, DE
Stephan Schröder · Birkenfeld, DE
Manfred Proll · Dorfen, DE
Jorg Kliewer · Birkenfeld, DE

Key dates

Filing date	May 6, 2005
Grant date	Mar 27, 2007
Priority date	—
Expiry date	Sep 16, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG11C5/145
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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 (T1) and a second branch including a charge pump (10) and a second controllable resistance (T2) are connected between the input terminal (IN) and the output terminal (A). A control circuit (20) alters the resistance values of the first and second controllable resistances (T1, T2) 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.