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:
Sep. 12, 2006
Filed:
Jul. 08, 2003
Kwang H. Liu, Sunnyvale, CA (US);
Sorin Negru, San Jose, CA (US);
George Hsieh, Taipei, TW;
Jacky Chen, Taipei, TW;
Frank Shih, Tam-Shuei, TW;
Scott Wu, Keelung, TW;
Kwang H. Liu, Sunnyvale, CA (US);
Sorin Negru, San Jose, CA (US);
George Hsieh, Taipei, TW;
Jacky Chen, Taipei, TW;
Frank Shih, Tam-Shuei, TW;
Scott Wu, Keelung, TW;
Arques Technology, Santa Clara, CA (US);
Abstract
An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.