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.

Date of Patent:
Jul. 23, 2024

Filed:

Aug. 10, 2022
Applicant:

Leadtrend Technology Corporation, Zhubei, TW;

Inventors:

Kuan-Hsien Chou, Zhubei, TW;

Yao-Tsung Chen, Zhubei, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33507 (2013.01); H02M 1/0009 (2021.05); H02M 1/0035 (2021.05); H02M 3/33561 (2013.01); H02M 3/33571 (2021.05);
Abstract

A control method is provided for operating a power converter with a power switch and an inductive device. A current-sense signal is provided to represent an inductor current through the inductive device. An ON time of the power switch is determined in response to a feedback signal and a saw-wave signal, to operate the power converter in a non-power-saving mode. The feedback signal is generated according to an output voltage of the power converter. The power converter can be operated in a power-saving mode, a burst mode. Operating in the burst mode, the ON time is determined in response to the current-sense signal and a current-limiting signal, which is increased during a soft burst-in time and is decreased during a soft burst-out time.


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