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:
Apr. 14, 2026
Filed:
Apr. 11, 2024
Acer Incorporated, New Taipei, TW;
Tzu-Tseng Chan, New Taipei, TW;
ACER INCORPORATED, New Taipei City, TW;
Abstract
A power supply includes an active power factor correction circuit, a resonant converting circuit, a zero-current detecting circuit and a control circuit. The control circuit provides a first control signal for operating the active power factor correction circuit, and provides second and third control signals for operating the resonant converting circuit. The zero-current detecting circuit monitors the status of boost inductor current in the active power factor correction circuit. When the boost inductor current is not in a zero-current state, the resonant converting circuit is configured to operate in a single-element resonant mode. When the boost inductor current is in the zero-current state, the resonant converting circuit is configured to operate in a multi-element resonant mode, thereby reducing overall resonation energy and resonation loss.