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. 31, 2016

Filed:

Jan. 28, 2014
Applicant:

Industrial Technology Research Institute, Hsinchu, TW;

Inventors:

Chi-Seng Lee, Hsinchu County, TW;

Nan-Hsiung Tseng, Hsinchu County, TW;

Chin-Hone Lin, Nantou County, TW;

Wei-Han Lai, Blacksburg, VA (US);

Hidekazu Miwa, Blacksburg, VA (US);

Jih-Sheng Lai, Blacksburg, VA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33569 (2013.01); H02M 3/335 (2013.01); H02M 3/33507 (2013.01); H02M 2001/0058 (2013.01); H02M 2001/0077 (2013.01); Y02B 70/1491 (2013.01);
Abstract

A DC-DC power conversion apparatus and a DC-DC power conversion method are provided. The DC-DC power conversion apparatus includes a switching circuit, a main transformer circuit, a main rectifier circuit, an auxiliary transformer circuit and an auxiliary rectifier circuit. The switching circuit provides an input power to a primary winding of the main transformer circuit or a primary winding of the auxiliary transformer circuit by time-division. An AC input terminal of the main rectifier circuit is coupled to a secondary winding of the main transformer circuit. An AC input terminal of the auxiliary rectifier circuit is coupled to a secondary winding of the auxiliary transformer circuit. A power output terminal of the auxiliary rectifier circuit is coupled to a reference voltage terminal of the main rectifier circuit for lifting a voltage of the power output terminal of the main rectifier circuit.


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