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.

Patent No.:

US 11031786 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 08, 2021

Filed:

Nov. 01, 2019
Applicant:

Taiyo Yuden Co., Ltd., Tokyo, JP;

Inventors:

Akifumi Kosugi, Gunma, JP;

Hiroshi Okawa, Gunma, JP;

Yoshitugu Iijima, Gunma, JP;

Masataka Sashikata, Gunma, JP;

Yoji Imai, Gunma, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/158 (2006.01); H02J 3/38 (2006.01); H02M 1/08 (2006.01);
U.S. Cl.
CPC ...
H02J 3/385 (2013.01); H02M 1/08 (2013.01); H02M 3/1582 (2013.01);
Abstract

According to one embodiment, a power convertor includes a buck-boost circuit; a switch driver, a switching controller, and a positive input terminal and a negative input terminal. In maximum power-point tracking, the switching controller causes the buck-boost circuit to stop outputting the output voltage, and varies the voltage value of the input voltage in a given range, which is from a lower-limit voltage value at which the switch driver is operable, by switching between the positive input terminal and the negative input terminal while varying a duty factor.


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