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. 11, 2021
Filed:
Jun. 19, 2019
Applicant:
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Inventors:
Giuseppe Scappatura, Aosta, IT;
Alberto Bianco, Gressan, IT;
Francesco Ciappa, Borgofranco D'Ivrea, IT;
Assignee:
STMicroelectronics S.r.l., Agrate Brianza, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/42 (2007.01); H02M 1/08 (2006.01); H02M 3/335 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/4208 (2013.01); H02M 1/083 (2013.01); H02M 3/335 (2013.01); H02M 2001/0058 (2013.01);
Abstract
A control circuit is configured to control a power factor correction (PFC) pre-regulator including a power switch and being configured to operate in a transition mode of operation and a valley-skipping mode of operation. The control circuit generates a drive signal to control a switching of the power switch based on a current threshold. A current threshold generator in the control circuit is configured to modulate the current threshold as a function of a number of valleys skipped in the valley-skipping mode of operation.