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:
Nov. 29, 2022
Filed:
Jan. 30, 2021
Ernest Henry Wittenbreder, Jr., St. Petersburg, FL (US);
Ernest Henry Wittenbreder, Jr., St. Petersburg, FL (US);
Other;
Abstract
Circuit structures and methods are described for achieving zero voltage switching in flying capacitor converters for both isolated and non-isolated applications. A first method is described in which zero voltage switching is achieved by operating the circuit with a variable frequency so that each switch in its on state remains on until the magnetizing current in a main inductor is reversed to a current magnitude sufficient to drive a zero voltage switching transition for a main switch. A second method is implemented with a main coupled inductor wherein a winding current is reversed and energy in a leakage inductance drives a zero voltage switching transition for a main switch. A third method is implemented with auxiliary inductors, auxiliary switches, and auxiliary capacitors which reverse the current in the auxiliary inductor which provides the necessary energy for driving a zero voltage switching transition for a main switch.