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. 11, 2017

Filed:

Apr. 13, 2015
Applicant:

Asus Global Pte. Ltd., Singapore, SG;

Inventors:

Alison Wang, Singapore, SG;

Surgy Liu, Singapore, SG;

Herry Fan, Singapore, SG;

Assignee:

ASUS GLOBAL PTE. LTD., Singapore, SG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/04 (2006.01); H02M 3/158 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02H 9/041 (2013.01); H02M 1/32 (2013.01); H02M 3/1588 (2013.01); Y02B 70/1466 (2013.01);
Abstract

A power supply device and an overvoltage protection method are disclosed. The power supply device includes an energy storage unit, a first switch, a second switch and a driving module. The energy storage unit generates a driving voltage according to a supplied voltage. The first switch selectively transmits the supplied voltage to the energy storage unit according to a first driving signal. The second switch is selectively conducted to adjust the driving voltage according to a second driving signal. The driving module conducts the second switch when the supplied voltage is rose at a first predetermined value, and generates the first driving signal and the second driving signal after the supplied voltage is rose at a second predetermined value. The first predetermined value is smaller than the second predetermined value.


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