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. 22, 2018
Filed:
Apr. 12, 2017
Applicant:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Inventors:
Wei Mao, Chengdu, CN;
Tianzhu Zhang, Chengdu, CN;
Assignee:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/157 (2006.01); H02M 3/158 (2006.01);
U.S. Cl.
CPC ...
H02M 3/157 (2013.01); H02M 3/158 (2013.01);
Abstract
Switching mode power supply (SMPS) having a switch circuit and a controller. The switch circuit has an output inductor and a switch with a minimum on time. A control signal is generated by the controller to control the switching operation of the switch based on a clock signal with a switching frequency and an off signal. When the required on time of the switch is smaller than the minimum on time, the SMPS reduces the switching frequency adaptively and the actual on time of the switch is controlled to be the minimum on time.