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. 07, 2016
Filed:
Jun. 15, 2015
Chien-fu Tang, Hsinchu, TW;
Isaac Y. Chen, Zhubei, TW;
Kuang-fu Chang, Kaohsiung, TW;
Hsin-yi Wu, Taipei, TW;
An-tung Chen, Taipei, TW;
Chien-Fu Tang, Hsinchu, TW;
Isaac Y. Chen, Zhubei, TW;
Kuang-Fu Chang, Kaohsiung, TW;
Hsin-Yi Wu, Taipei, TW;
An-Tung Chen, Taipei, TW;
RICHTEK TECHNOLOGY CORPORATION, Zhubei, Hsinchu, TW;
Abstract
The present invention discloses a flyback power supply circuit with a programmable function and a control method thereof. The flyback power supply circuit includes: a transformer circuit, a power switch circuit, a primary side control circuit, an opto-coupler circuit, and a secondary side control circuit. The primary side control circuit determines whether an over voltage condition occurs, and further determines whether to generate an over voltage protection signal to turn OFF a power switch of the power switch circuit according to a rate of increase of a feedback signal and a control level, or according to the rate of increase of the feedback signal and a rate of change of a target control signal.