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:
Sep. 18, 2012
Filed:
Nov. 26, 2008
Michele Grande, Avola, IT;
Salvatore Tumminaro, Marianopoli, IT;
Salvatore Giombanco, Cassaro, IT;
Alfio Pasqua, Piedimonte Etneo, IT;
Claudio Adragna, Monza, IT;
Michele Grande, Avola, IT;
Salvatore Tumminaro, Marianopoli, IT;
Salvatore Giombanco, Cassaro, IT;
Alfio Pasqua, Piedimonte Etneo, IT;
Claudio Adragna, Monza, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
An embodiment of a voltage converter, provided with: a voltage transformer having a primary winding receiving an input voltage, a secondary winding supplying an output voltage, and an auxiliary winding supplying a feedback voltage correlated to the output voltage; a main switch, coupled to the primary winding; a control circuit, which controls switching of the main switch and has a sampling stage for sampling and holding the feedback voltage and supplying a sampled signal; and a voltage limiting circuit, provided with a clamp capacitor, designed to be coupled across the primary winding. A sampling control stage is coupled to the sampling stage, and is designed, during a given operating condition of the voltage converter, to enable updating of the sampled signal on the basis of a state of charge of the clamp capacitor.