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:
May. 07, 2019

Filed:

Oct. 29, 2018
Applicant:

Futurewei Technologies, Inc., Plano, TX (US);

Inventors:

Daoshen Chen, Allen, TX (US);

Heping Dai, Plano, TX (US);

Xujun Liu, Shenzhen, CN;

Zhihua Liu, Shenzhen, CN;

Liming Ye, Frisco, TX (US);

Dianbo Fu, Frisco, TX (US);

Ce Liu, Shenzhen, CN;

Bing Cai, Richardson, TX (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01); H02M 3/22 (2006.01); H02M 3/335 (2006.01); H02M 3/337 (2006.01); H02M 3/325 (2006.01); H02M 1/14 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33507 (2013.01); H02M 1/14 (2013.01); H02M 3/156 (2013.01); H02M 3/22 (2013.01); H02M 3/325 (2013.01); H02M 3/337 (2013.01); H02M 3/3376 (2013.01); H02M 3/33523 (2013.01); H02M 3/33569 (2013.01); H02M 3/33576 (2013.01); H02M 3/33592 (2013.01); H02M 2001/0009 (2013.01); H02M 2001/0058 (2013.01); Y02B 70/1433 (2013.01); Y02B 70/1491 (2013.01);
Abstract

A system comprises an input power stage coupled to a primary side of a transformer, an output power stage coupled to a secondary side of a transformer, a first common node capacitor and a common node resistor connected in series between a midpoint of the secondary side of the transformer and ground and a detector having an input connected to a common node of the first common node capacitor and the common node resistor, and an output connected to a control circuit, wherein the control circuit is configured to dynamically adjust a switching frequency of the system based upon an output of the detector.


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