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:
Mar. 31, 2015

Filed:

Dec. 11, 2012
Applicant:

Eaton Corporation, Cleveland, OH (US);

Inventors:

Jack Gu, Shenzhen, CN;

Yuefeng Yang, Shenzhen, CN;

Yuehui Li, Shenzhen, CN;

Assignee:

Eaton Corporation, Cleveland, OH (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/24 (2006.01); H02M 3/156 (2006.01); H02M 3/337 (2006.01); H02M 1/00 (2006.01); H02M 7/48 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01); H02M 3/3376 (2013.01); H02M 2001/007 (2013.01); H02M 2007/4815 (2013.01);
Abstract

A direct current to direct current (DC/DC) converter includes a resonant converter stage, a buck stage, and a processor apparatus. The resonant converter stage includes a bridge circuit. The buck stage is configured to output an output voltage and an output current, is electrically connected in series with the resonant converter stage, and includes a buck switch. The processor apparatus is configured to sense the output voltage and the output current, and, based on the sensed output voltage and the sensed output current, to perform one of: (a) fixing a switching frequency of the bridge circuit to a predetermined maximum switching frequency and controlling the output voltage by controlling a duty cycle of the buck switch, and (b) fixing the duty cycle of the buck switch to a predetermined duty cycle and controlling the output voltage by controlling the switching frequency of the bridge circuit.


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