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. 08, 2017
Filed:
Nov. 20, 2014
Applicant:
Power Forest Technology Corporation, Hsinchu County, TW;
Inventor:
Yun-Chi Chiang, Hsinchu County, TW;
Assignee:
Power Forest Technology Corporation, Hsinchu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01); H02M 1/32 (2007.01); H02M 1/36 (2007.01); H02M 7/217 (2006.01);
U.S. Cl.
CPC ...
H02M 1/32 (2013.01); H02M 1/36 (2013.01); H02M 3/156 (2013.01); H02M 7/217 (2013.01);
Abstract
A power conversion apparatus and a protection method of the power conversion apparatus while a feedback current signal of the power conversion apparatus is abnormal are provided. The protection method includes a step of stopping switching a power switch if a duty cycle of a pulse width modulation signal is continuously greater than a preset duty cycle for at least one signal cycle and a voltage of a current sensing signal is smaller than a preset voltage level during the at least one signal cycle.