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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 9989564 B1

PDFFull Text
Date of Patent:
Jun. 05, 2018

Filed:

Oct. 09, 2013

Lossless over-current detection circuit for royer oscillators and push-pull converters

Applicants:

Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto, JP;

Murata Power Solutions, Mansfield, MA (US);

Inventors:

Atul Abhyankar, Milton Keynes, GB;

Peter Cheung, Milton Keynes, GB;

Assignee:

MURATA MANUFACTURING CO., LTD., Kyoto, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Jermele M Hollington

Assistant Examiner:

Temilade Rhodes-Vivour

Int. Cl.
CPC ...
G01R 31/02 (2006.01); G01R 19/165 (2006.01); H02M 1/32 (2007.01); H02M 3/338 (2006.01); G01R 19/00 (2006.01); H02H 9/02 (2006.01); G05F 1/00 (2006.01); H01L 21/00 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
G01R 19/16533 (2013.01); G01R 19/0092 (2013.01); H02H 9/02 (2013.01); H02M 1/32 (2013.01); H02M 3/3382 (2013.01); G01R 19/16547 (2013.01); G05F 1/00 (2013.01); H01L 21/00 (2013.01); H02M 1/00 (2013.01); H02M 2001/0009 (2013.01);
Abstract

A circuit including over-current protection includes a voltage input, first and second switching transistors that are complementarily switched and that receive current from the voltage input, a first resistor, a first diode including a first anode and a first cathode, and a second diode including a second anode and a second cathode. The first anode and the second anode are connected to each other and are connected to the voltage input via the first resistor. The first cathode is connected to the first switching transistor and the second cathode is connected to the second switching transistor such that the connection of the first and second anodes provides an over-current signal that is related to the current in the first and second switching transistors.

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Abhyankar, Atul. (2018). Lossless over-current detection circuit for royer oscillators and push-pull converters (U.S. Patent No. 9989564). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9989564

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