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:
Jun. 11, 2019
Filed:
Oct. 11, 2016
Richtek Technology Corporation, Chupei, HsinChu, TW;
Yu-Kai Chen, Tainan, TW;
Kuang-Fu Chang, Kaohsiung, TW;
RICHTEK TECHNOLOGY CORPORATION, Chupei, Hsinchu, TW;
Abstract
The present invention provides a power converter, a secondary side controller, and a short circuit determination method for a current sensing resistor of the power converter. The power converter is controlled by a power switch to convert an input voltage to an output voltage, and provide an output current to an output terminal. The power converter senses the output current by a current sensing resistor to generate first information which relates to the output current. The power converter generates second information according to an ON time, an OFF time or a switching period of the power switch, or according to an energy-releasing period for transmitting energy to the output terminal, wherein the second information indicates whether there is a substantial amount of energy transmitted to the output terminal. By checking whether the first information and the second information are contradictory to each other, a malfunction can be found.