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. 14, 2025
Filed:
May. 30, 2023
Dell Products L.p., Round Rock, TX (US);
Edward Douglas Knapton, Pflugerville, TX (US);
Dell Products L.P., Round Rock, TX (US);
Abstract
A power supply unit (PSU), including: an active bridge rectifier, including: a plurality of field effect transistors (FETs); and a controller connected to each of the FETs; a power source connected between first and second terminals of the active bridge rectifier; and a capacitor connected between third and fourth terminals of the active bridge rectifier, wherein in a charging state: the controller performs, at a first time, zero-crossing detection of voltage of a power signal from the power source at the first and the second terminals, and in response, provides a first control signal to each of the FETs to enable each of the FETs for a fraction of a phase of current of the power signal such that the capacitor is charged during the fraction of the phase by the power signal.