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:
Oct. 03, 2017

Filed:

Dec. 07, 2015
Applicant:

Texas Instruments Incorporated, Dallas, TX (US);

Inventors:

Lei Chen, Dallas, TX (US);

Rajarshi Mukhopadhyay, Allen, TX (US);

Mark W. Morgan, Allen, TX (US);

Joseph A. Sankman, Plano, TX (US);

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 7/217 (2006.01); H02M 3/158 (2006.01); H02M 3/28 (2006.01); H02M 1/12 (2006.01);
U.S. Cl.
CPC ...
H02M 7/217 (2013.01); H02M 3/158 (2013.01); H02M 3/28 (2013.01); H02M 2001/123 (2013.01);
Abstract

A method and device for providing isolated power transfer to a low-power load across a capacitor of a series resonance circuit are shown. The method includes comparing an output voltage received via a feedback loop with a desired output voltage. Responsive to determining that the output voltage is not equal to the desired output voltage, the method determines a sub-harmonic order of the resonant frequency of the series resonance circuit to use as a switching frequency and switches the series resonance circuit at substantially the determined subharmonic order of the resonant frequency.


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