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:
Nov. 18, 2014
Filed:
Oct. 10, 2011
Applicants:
Zhong YE, Plano, TX (US);
Shanguang Xu, Plano, TX (US);
Inventors:
Zhong Ye, Plano, TX (US);
Shanguang Xu, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/44 (2006.01); H02M 1/40 (2007.01); H02M 3/337 (2006.01);
U.S. Cl.
CPC ...
H02M 1/40 (2013.01); H02M 3/337 (2013.01);
Abstract
Methods and circuits for balancing current in a transformer are disclosed herein. An embodiment of the method includes sensing the magnitude and direction of current flow through the primary side of the transformer. The magnitude of current flowing in a first direction is compared to the magnitude of current flowing in a second direction through the primary side of the transformer. An AC signal driving the primary side of the transformer is adjusted so that the current flow in the first direction is substantially the same as current flow in the second direction.