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. 21, 2018
Filed:
Oct. 23, 2017
Vanguard International Semiconductor Corporation, Hsinchu, TW;
Jung-Tsun Chuang, Tainan, TW;
Shao-Chang Huang, Hsinchu, TW;
Chieh-Yao Chuang, Kaohsiung, TW;
Hung-Wei Chen, Jhubei, TW;
VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
A power-on control circuit is provided. A first detection circuit detects the voltage of a first voltage source to generate a first detection signal to a first node. A switching circuit is coupled to the first voltage source and a second voltage source and outputs the voltage of the first voltage source or the voltage of the second voltage source to a second node according to the voltage level of the first node. A first buffer generates a feedback signal and a control signal according to the voltage level of the second node. A second detection circuit generates a second detection signal according to the feedback signal, the control signal, the voltage of the second voltage source and a recovery signal. A second buffer generates the recovery signal according to the second detection signal.