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:
Jul. 23, 2019
Filed:
Feb. 15, 2018
Champion Microelectronic Corporation, Hsinchu, TW;
Jeffrey Hwang, Saratoga, CA (US);
Champion Microelectronic Corporation, Hsinchu, TW;
Abstract
The present invention is directed toward a switching power supply and improvements thereof. In accordance with an embodiment, a switching power supply is provided. The switching power supply comprises: a first power supply stage that forms an intermediate regulated voltage; and a second power supply stage configured to accept the intermediate regulated voltage and configured to form a regulated output voltage, wherein the first power supply stage monitors an error signal that is representative of a difference between the intermediate regulated voltage and a desired level for the intermediate regulated voltage to detect a light load condition and wherein the first power supply stage enters a first power-saving mode when the error signal falls below a first threshold, a switching frequency in the first power supply stage being reduced in the first power-saving mode, and wherein the first power supply stage enters a second power-saving mode when the error signal falls below a second threshold, switching in the first power supply stage being performed in bursts in the second power-saving mode.