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:
Apr. 10, 2018

Filed:

Feb. 19, 2016
Applicant:

Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;

Inventors:

Koji Nakajima, Tokyo, JP;

Takashi Kumagai, Tokyo, JP;

Yuji Shirakata, Tokyo, JP;

Yujiro Kido, Tokyo, JP;

Kenji Nishizaka, Tokyo, JP;

Assignee:

MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/28 (2006.01); H02M 3/335 (2006.01); H05K 1/11 (2006.01); H05K 1/02 (2006.01);
U.S. Cl.
CPC ...
H01F 27/2804 (2013.01); H01F 27/2876 (2013.01); H02M 3/33507 (2013.01); H05K 1/0298 (2013.01); H05K 1/115 (2013.01); H01F 2027/2809 (2013.01); H01F 2027/2819 (2013.01);
Abstract

An insulation type step-down converter includes first and second step-down transformers each of which includes an input-side coil and an output-side coil. An intermediate portion of the output-side coil of the first step-down transformer and an intermediate portion of the output-side coil of the second step-down transformer are connected to each other. First, second, third, and fourth rectifier elements are connected in series with first, second, third, and fourth output-side coils, respectively. Smoothing coils are connected to the first to fourth output-side coils. The first, second, third, and fourth rectifier elements are connected such that electric currents flow simultaneously in the first output-side coil and the third output-side coil, and electric currents flow simultaneously in the second output-side coil and the fourth output-side coil in a manner alternating with the electric currents in the first output-side coil and the third output-side coil.


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