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:
Nov. 09, 2021
Filed:
Feb. 19, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Takashi Saji, Shiga, JP;
Tomoko Usukura, Hyogo, JP;
Assignee:
NUVOTON TECHNOLOGY CORPORATION JAPAN, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/12 (2006.01); H02H 1/00 (2006.01); H02M 1/14 (2006.01); H02M 3/335 (2006.01); H02M 1/32 (2007.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02H 7/1213 (2013.01); H02H 1/0007 (2013.01); H02M 1/143 (2013.01); H02M 1/32 (2013.01); H02M 3/33523 (2013.01); H02M 1/0009 (2021.05); H02M 1/0032 (2021.05); H02M 1/325 (2021.05);
Abstract
In a switching power supply device including an overload protection circuit, when a load state turns into an overload state due to a decrease in an input voltage, an overload protection signal is activated in response to activation of an overload detection signal, and the overload protection signal is deactivated when an input low voltage detection signal is in an inactive state.