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:
Jun. 16, 2026

Filed:

Mar. 14, 2024
Applicant:

On-bright Electronics (Shanghai) Co., Ltd., Shanghai, CN;

Inventors:

Qian Fang, Shanghai, CN;

Yun Sun, Shanghai, CN;

Tuofu Liu, Shanghai, CN;

Xiuhong Zhang, Shanghai, CN;

Yuan Lin, Shanghai, CN;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 1/38 (2007.01);
U.S. Cl.
CPC ...
H02M 3/33523 (2013.01); H02M 1/0009 (2021.05); H02M 1/0025 (2021.05); H02M 1/0058 (2021.05); H02M 1/385 (2021.05); H02M 3/33515 (2013.01);
Abstract

Controller and method for a power converter. For example, a controller for a power converter includes: a first drive signal generator configured to generate a first drive signal to turn off a first transistor at a first time and turn on the first transistor at a second time, the first transistor being configured to receive an input voltage and related to a primary winding coupled to an auxiliary winding and a secondary winding, the secondary winding being related to an output voltage, the second time being later than the first time; a second drive signal generator configured to generate a second drive signal to turn on a second transistor at a third time, the second transistor being coupled to the first transistor and related to the primary winding, the third time being later than the first time and being earlier than the second time.


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