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.:

US 9893639 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 13, 2018

Filed:

Apr. 06, 2017
Applicant:

Gem-micro Semiconductor Inc., Taoyuan, TW;

Inventor:

Cheng-Yu Chen, Taipei, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/217 (2006.01); H02M 3/335 (2006.01); H02M 1/08 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33592 (2013.01); H02M 1/083 (2013.01);
Abstract

A synchronous rectifier control circuit and the control method thereof for controlling a switching power supply which includes a transformer, a first switch transistor and a second switch transistor. According to one embodiment to the present invention, the control circuit comprises a conducting detection module, a voltage averaging module, a voltage-second balance module and a logic-controlled module. The conducting detection module is comprised of a first reference potential and a conduction signal. The voltage averaging module includes an averaged circuit and outputs a second reference potential. The voltage-second balance module includes a first reference current, a second reference current, a voltage-second balance switch, a voltage-second balance comparator and a timing capacitor, and outputs a reset signal. The logic-controlled module includes a logic circuit to control the second switch transistor to turn on or off.


Find Patent Forward Citations

Chen, Cheng-Yu. (2018). Synchronous rectifier control circuit and method using volt-second balancing (U.S. Patent No. 9893639). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9893639

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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