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. 13, 2026
Filed:
Jun. 11, 2024
Stmicroelectronics International N.v., Geneva, CH;
Sebastiano Messina, Mascalucia, IT;
Marco Torrisi, Gravina di Catania, IT;
STMicroelectronics International N.V., Geneva, CH;
Abstract
In accordance with various embodiments of the present disclosure, a totem pole power factor correction (PFC) device is provided. In some embodiments, the totem pole PFC device comprises a low frequency leg comprising first and second low frequency switches, a high frequency leg comprising first and second high frequency switches, and a controller configured to control the low and high frequency switches. During each of a plurality of transition zones zone starting before and ending after a respective zero crossing of an AC input voltage, the controller holds open the low frequency switches and one of the high frequency switches and closes and opens a different one of the high frequency switches according to a predetermined transition duty cycle to provide a gradual transition of a midpoint voltage of the low frequency leg from its maximum value to zero volts or from zero volts to its maximum value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile