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:
Oct. 14, 2014
Filed:
May. 10, 2013
Ams Ag, Unterpremstätten, AT;
Gregor Schatzberger, Graz, AT;
ams AG, Unterpremstaetten, AT;
Abstract
A charge pump circuit () comprises a first stage () and at least a second stage (), each having a capacitor () and a current source (). The charge pump circuit () is configured such that, in a first phase (A) of operation, the capacitor () of the first stage () is switched in series to the current source () of the first stage () and the capacitor () of the second stage () is switched in series to the current source () of the second stage () and that, in a second phase (B) of operation, the capacitor () of the first stage () and the capacitor () of the second stage () are switched in series for providing a supply voltage (VHF) at an output () of the charge pump circuit (). A comparator signal (SCOM) is generated by comparing a voltage at an electrode of one of the capacitors () of the first and the at least second stage () with a reference voltage (VR). The first and the second phase (A, B) are set depending on the comparator signal (SCOM).