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:
Apr. 01, 2003
Filed:
Oct. 19, 2001
Stefan Dietrich, Türkenfeld, DE;
Patrick Heyne, München, DE;
Thilo Marx, Villingen-Schwenningen, DE;
Sabine Kieser, Hausham, DE;
Michael Sommer, München, DE;
Thomas Hein, München, DE;
Michael Markert, Augsburg, DE;
Torsten Partsch, Chapel Hill, NC (US);
Peter Schrögmeier, München, DE;
Christian Weis, Germering, DE;
Infineon Technology AG, Munich, DE;
Abstract
The voltage pump for generating a boosted output voltage has a switch-on control circuit. The switch-on control includes a transistor that is connected between a terminal for feeding in a supply voltage and the terminal for tapping off the boosted output voltage. After the voltage pump has started to operate, the boosted output voltage is decoupled from the supply voltage by the transistor. A changeover switch forwards the respective higher of the output voltage or supply voltage to the substrate terminal and gate terminal of the transistor. The switch-on control enables early provision of a boosted output voltage in conjunction with reliable start-up operation of the voltage pump, while the additional outlay on circuitry is minimized.