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:
Feb. 05, 2019
Filed:
Apr. 03, 2015
Applicant:
Fairchild Korea Semiconductor Ltd., Bucheon-si, KR;
Inventors:
Assignee:
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/42 (2006.01); G01R 19/165 (2006.01); H02M 1/15 (2006.01); H02M 1/32 (2007.01); H02M 3/335 (2006.01); G01R 31/04 (2006.01); H02M 3/07 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/15 (2013.01); H02M 1/32 (2013.01); H02M 3/33523 (2013.01); H02M 3/33576 (2013.01); G01R 31/04 (2013.01); H02M 3/07 (2013.01); H02M 2001/0035 (2013.01); Y02B 70/16 (2013.01);
Abstract
A load detecting device for detecting whether a load is connected to a power supply device includes a no-load condition detector configured to detect a no-load condition using a sensing voltage having a frequency variant with a switching frequency of the power supply device, a circuit configured to acquire a signal having a waveform differing according to a connection or detachment between the load and the power supply device after the no-load condition is detected by the no-load condition detector, and a detachment detector configured to detect whether the load is detached by sensing the signal acquired by the circuit.