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.

Date of Patent:
Jul. 17, 2018

Filed:

Dec. 24, 2014
Applicant:

Mediatek Inc., Hsin-Chu, TW;

Inventors:

Sheng-Fu Hsu, Hsinchu, TW;

Je-Shen Hu, Hsinchu, TW;

Assignee:

MediaTek Inc., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/02 (2006.01); H01L 27/02 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0285 (2013.01); H01L 27/0248 (2013.01); H01L 27/0262 (2013.01);
Abstract

A surge-protection circuit for a chip is provided. The surge-protection circuit includes a detection element and a protection element. The detection element is embedded on the chip and arranged between a first terminal and a second terminal, and the detection element is utilized to detect whether an abrupt voltage variation occurs due to a surge or not and generate an enabling signal when the abrupt voltage variation occurs. The protection element is embedded on the chip and coupled to the detection element, and the protection element is utilized to adjust and reduce the abrupt voltage variation through bypassing high energy generated by the surge after receiving the enabling signal.


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