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:
May. 20, 2025
Filed:
Sep. 16, 2022
Applicant:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Inventor:
Hao Wang, Hangzhou, CN;
Assignee:
Chengdu Monolithic Power Systems Co., Ltd., Sichuan, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/217 (2006.01); H02M 1/00 (2007.01); H02M 1/08 (2006.01);
U.S. Cl.
CPC ...
H02M 7/2176 (2013.01); H02M 1/0058 (2021.05); H02M 1/083 (2013.01);
Abstract
A switching mode power supply with stable zero crossing detection is discussed. The switching mode power supply disables a ZCD function when the AC input voltage has a voltage value close to a voltage value of the output voltage, so that instable zero crossing detection issues are eliminated. Meantime, when the AC input voltage has a voltage value close to a voltage value of the output voltage, the switching mode power supply turns on a main power after a dead time.