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:
Apr. 18, 2017
Filed:
Apr. 27, 2015
Kun-yu Lin, Zhubei, TW;
Chien-fu Tang, Hsinchu, TW;
Hsin-yi Wu, Taipei, TW;
Kuang-fu Chang, Kaohsiung, TW;
Kun-Yu Lin, Zhubei, TW;
Chien-Fu Tang, Hsinchu, TW;
Hsin-Yi Wu, Taipei, TW;
Kuang-Fu Chang, Kaohsiung, TW;
RICHTEK TECHNOLOGY CORPORATION, Zhubei, Hsinchu, TW;
Abstract
A flyback power converter includes a transformer which has a primary winding, a secondary winding, and an auxiliary winding; a power switch controlling the conduction of the primary winding; and a control circuit generating a control signal to control the power switch, wherein the control circuit is an integrated circuit having a current sensing pin for obtaining a current sensing signal of a current through the power switch. The flyback power converter further includes a temperature-sensitive resistor or a mode detection resistor coupled between the auxiliary winding and the current sensing pin. The temperature-sensitive resistor provides a temperature-related signal for the control circuit to perform an over-temperature protection, or the temperature-sensitive resistor provides a mode detection signal for the control circuit to determine an operation mode of the flyback power converter.