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:
May. 17, 2011
Filed:
Dec. 15, 2008
Uwe Jansen, Werl, DE;
Uwe Jansen, Werl, DE;
Infineon Technologies AG, Neubiberg, DE;
Abstract
The invention relates to a circuit arrangement for providing a voltage supply for a driver circuit for driving a semiconductor switch. The circuit arrangement has: a first bootstrap circuit which is supplied with a first auxiliary voltage referring to a lower supply potential, the bootstrap circuit comprising a first capacitor which provides a supply voltage for the driver circuit; a first charge pump which is designed to keep the charge in the first capacitor at or above a particular level at least during a particular period of time; a second bootstrap circuit which is supplied with a second auxiliary voltage referring to an upper supply potential, the bootstrap circuit comprising a second capacitor which provides a supply voltage for the first charge pump; and a second charge pump which is designed to generate the second auxiliary voltage.