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:
Feb. 24, 2026
Filed:
Feb. 01, 2024
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Abstract
A flyback power converter includes a transformer, a voltage clamping circuit, a main switch element and a control circuit. The voltage clamping circuit includes a first capacitor and a clamping switch element. The first capacitor is electrically connected with a primary winding of the transformer. The clamping switch element is electrically connected between the capacitor and the primary winding. The control circuit detects a capacitor voltage of the first capacitor and a current flowing through the clamping switch element. If the capacitor voltage is greater than a reference voltage, the clamping switch element is turned on. If the capacitor voltage is not greater than the reference voltage and the current flowing through the clamping switch element is lower than a reference current value, the clamping switch element is turned off.