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:
Jul. 22, 2024
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Abstract
A multi-level conversion circuit and a cycle-by-cycle protection method therefor are provided. The cycle-by-cycle protection method includes steps of: (a) determining main switches and synchronous rectification switches; (b) controlling the main switches to operate in a normal mode; (c) detecting a current flowing through the inductor, and determining whether the current exceeds a threshold; (d) when the current exceeds the threshold, defining the main switch in an on state and having shortest turn-on duration as a target main switch, switching the target main switch to a current limiting mode for turning it off; and (e) after switching the target main switch to the current limiting mode, if the current is lower than the threshold, at a moment when a falling edge of control signals in a reference mode for the main switches first appears, switching the target main switch to a state in the reference mode corresponding to the moment.