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. 23, 2022
Filed:
Jul. 27, 2020
Samsung Electronics Co., Ltd., Suwon-si, KR;
Hyunseok Nam, Yongin-si, KR;
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Abstract
A frequency limit circuit includes a frequency-voltage converter, a compensation voltage generator and a compensator. The frequency-voltage converter generates a conversion voltage proportional to an operation frequency of the DC-DC converter based on a pulse-frequency modulation (PFM) voltage control signal indicating the operation frequency. The compensation voltage generator generates a compensation voltage based on a difference between the conversion voltage and a frequency limit voltage. The compensator adjusts a compensation current at an output node of the DC-DC converter based on the compensation voltage to restrict the operation frequency. The operation frequency of the DC-DC converter may be restricted efficiently by adjusting the compensation current through the negative feedback operation.