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. 01, 2018

Filed:

Jun. 21, 2017
Applicants:

Denso Corporation, Kariya, Aichi-pref., JP;

National University Corporation Oita University, Oita, Oita-pref., JP;

Inventors:

Eisuke Takahashi, Kariya, JP;

Masaya Takahashi, Kariya, JP;

Kimihiro Nishijima, Oita, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01); H02M 3/07 (2006.01); H02M 3/155 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01); H02M 3/07 (2013.01); H02M 2003/1555 (2013.01); H02M 2003/1566 (2013.01);
Abstract

In a power converter, a first electrical path connects between the series resonant circuit and a selected terminal from the high- and low-side input and output terminals of the power converter. An auxiliary diode is provided on one of the series resonant circuit and the first electrical path. An auxiliary switch, when turned on, causes an inductor current to flow through the auxiliary diode to the resonance inductor, thus storing electromagnetic energy into the resonance inductor, and causes the resonance inductor and the capacitance component of the series resonant circuit to resonate with each other. A second electrical path bypasses the auxiliary switch for flow of the inductor current. A discharge unit is provided on the second electrical path. The discharge unit is activated to discharge the electromagnetic energy stored in the resonance inductor via the second electrical path.


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