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:
Sep. 08, 2026
Filed:
Nov. 18, 2024
Acer Incorporated, New Taipei City, TW;
Tzu-Tseng Chan, New Taipei City, TW;
ACER INCORPORATED, New Taipei City, TW;
Abstract
A power supply device with low loss includes a bridge rectifier, a boost inductor, a power switch element, a first output stage circuit, a switch circuit, a transformer, a resonant capacitor, a second output stage circuit, and a detection and control circuit. The power switch element selectively couples the boost inductor to a control node according to a first driving voltage. The resonant capacitor provides a capacitive voltage. The second output stage circuit includes a sense resistor. An output current flows through the sense resistor, such that a sense voltage difference is formed across the sense resistor. The detection and control circuit generates the first driving voltage, and determines a tunable voltage at the control node according to the capacitive voltage and the sense voltage difference.