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:
Feb. 16, 2021
Filed:
May. 07, 2019
Leadtrend Technology Corporation, Zhubei, TW;
Pao-Chu Chou, Zhubei, TW;
Ming Chang Tsou, Zhubei, TW;
LEADTREND TECHNOLOGY CORPORATION, Zhubei, TW;
Abstract
A power controller provides a PWM signal to a power switch in response to a compensation signal to control the power switch, the compensation signal generated in response to an output voltage of a power converter. The power controller is configured to provide a maximum switching frequency limiting a switching frequency of the PWM signal. The power controller jitters the maximum switching frequency, making the maximum switching frequency have a first average switching frequency and a first variation ratio when the compensation signal is a first compensation value, and have a second average switching frequency and a second variation ratio when the compensation signal is a second compensation value. The first average switching frequency is higher than the second average switching frequency, and the second variation ratio is larger than the first variation ratio.