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. 01, 2019
Filed:
Mar. 20, 2019
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Nikhilesh S. Kamath, Chandler, AZ (US);
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Abstract
Bridgeless PFC converters. At least some example embodiments are methods of operating a power converter, including operating the power converter during a positive half-line cycle of a frequency of an alternating current (AC) source by: charging a primary winding of a multi-winding boost inductor with a charging current having a first polarity; and then discharging the primary winding; sensing a falling edge of a voltage at a switch node by way of a secondary winding of the multi-winding boost inductor; and triggering a subsequent charging of the primary winding during the positive half-line cycle based on the falling edge. Operating the power converter during a negative half-line cycle of the line frequency by: sensing a rising edge of the voltage at the switch node by way of the secondary winding; and triggering a subsequent charging of the primary winding.