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:
Aug. 25, 2026
Filed:
Jul. 19, 2024
Diodes Incorporated, Plano, TX (US);
DIODES INCORPORATED, Plano, TX (US);
Abstract
A circuit for supplying power to a switching power supply control circuit based on an auxiliary winding includes: an auxiliary winding, a switching transistor, a low dropout voltage regulator (LDO), a first diode, a second diode, a forward energy storage capacitor, and a flyback energy storage capacitor, where the auxiliary winding, the flyback energy storage capacitor, and the switching transistor form a flyback energy storage loop to charge the flyback energy storage capacitor, and the auxiliary winding, the flyback energy storage capacitor, and the switching transistor form a flyback energy storage loop to charge the flyback energy storage capacitor. In a forward state, if the voltage of the forward energy storage capacitor is less than the voltage at an output terminal of the LDO, the flyback energy storage capacitor supplies power, or if the voltage of the forward energy storage capacitor is greater, the forward energy storage capacitor supplies power.