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:
Aug. 16, 2016

Filed:

Oct. 08, 2013
Applicant:

Fsp Technology Inc., Taoyuan County, TW;

Inventors:

Lung-Chi Wei, Taoyuan County, TW;

Ching-Chia Chu, Taoyuan County, TW;

Assignee:

FSP TECHNOLOGY INC., Taoyuan, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/00 (2006.01); H02H 9/02 (2006.01); H02H 9/00 (2006.01);
U.S. Cl.
CPC ...
H02H 9/02 (2013.01); H02H 9/001 (2013.01);
Abstract

A power supply apparatus is provided, and which includes a power conversion circuit, a control chip with soft-start function and a short protection circuit. The power conversion circuit is configured to provide a DC output voltage to a load in response to an output pulse-width-modulation (PWM) signal. The control chip is operated under a DC input voltage, and configured to generate the output PWM signal to control the operation of the power conversion circuit. The short protection circuit is configured to pull-down the level of a soft-start pin of the control chip, so as to substantially/significantly reduce the frequency and duty cycle of the output PWM signal, and then substantially/significantly reduce the current flowing through the shorted load.


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