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:
Mar. 19, 2019
Filed:
Oct. 30, 2017
Applicant:
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Inventors:
Assignee:
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/14 (2006.01); H02M 3/07 (2006.01); H02M 3/156 (2006.01); H02M 3/335 (2006.01); H02M 1/12 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/073 (2013.01); H02M 1/14 (2013.01); H02M 3/156 (2013.01); H02M 1/12 (2013.01); H02M 3/335 (2013.01); H02M 2001/0006 (2013.01);
Abstract
A charge pump includes: a first diode that is connected to a first node; a second diode that is connected to a second node; a pump capacitor that is connected to a third node to which the first diode and the second diode are connected; a power supply capacitor that is connected to the pump capacitor; a third diode that is connected between the pump capacitor and the power supply capacitor; and a zener diode that is connected in parallel to the third diode and the power supply capacitor. A power supply device decreases a ripple of an output current using a ripple reduction signal.