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:
Jan. 26, 2021

Filed:

Nov. 28, 2018
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Ryo Miyazawa, Tokyo, JP;

Masahide Ohnishi, Tokyo, JP;

Akihiro Ii, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 50/12 (2016.01); H02M 7/06 (2006.01); H02M 1/32 (2007.01); H02J 7/02 (2016.01); H02M 3/335 (2006.01); H02M 7/5387 (2007.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02J 50/12 (2016.02); H02M 1/32 (2013.01); H02M 3/335 (2013.01); H02M 7/06 (2013.01); H02J 7/025 (2013.01); H02J 2207/20 (2020.01); H02M 7/5387 (2013.01); H02M 2001/0009 (2013.01);
Abstract

A wireless power receiver is provided with a power reception unit, a rectifier circuit including first to fourth diodes and first and second capacitors and converting AC power into DC, an anode of the first diode and a cathode of the second diode being connected to one output end of the power reception unit, an anode of the third diode and a cathode of the fourth diode being connected to the other output end thereof, and first and second capacitors being connected in parallel, respectively, to the third and fourth diodes, a protection circuit including a first switching element connected between the other output end of the power reception unit and an output end of the rectifier circuit, and a control circuit that controls the first switching element based on output voltage of the rectifier circuit and inter-terminal voltage of the first or second capacitor.


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