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. 01, 2023
Filed:
Jun. 06, 2022
Applicant:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Inventor:
Xuefeng Chen, Hangzhou, CN;
Assignee:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/08 (2006.01); H02M 3/07 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33576 (2013.01); H02M 1/0006 (2021.05); H02M 1/0058 (2021.05); H02M 1/08 (2013.01); H02M 1/083 (2013.01); H02M 3/07 (2013.01); H02M 3/33507 (2013.01);
Abstract
A power supply circuit for a switching mode power supply, having: a charging capacitor coupled to an auxiliary winding; a power supply diode coupled to a power supply capacitor, wherein the charging capacitor has a connecting terminal coupled to the power supply diode, and the charging capacitor and the power supply diode are serially coupled between the auxiliary winding of the switching mode power supply and the power supply capacitor; and a power supply switch coupled between the connecting terminal and a primary ground of the switching mode power supply.