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:
Jun. 20, 2017

Filed:

May. 05, 2015
Applicant:

Rohm Co., Ltd., Ukyo-ku, Kyoto, JP;

Inventors:

Shun Fukushima, Kyoto, JP;

Osamu Yanagida, Kyoto, JP;

Assignee:

ROHM CO., LTD., Kyoto, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01); H02M 3/158 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01); H02M 3/158 (2013.01); H02M 2001/0009 (2013.01); H02M 2001/0032 (2013.01); Y02B 70/16 (2013.01);
Abstract

A control circuit of a DC/DC converter is disclosed. The control circuit includes a pulse modulator generating a comparison pulse, which is transitioned to an on level when a feedback voltage depending on an output voltage of the converter is lowered to a threshold voltage and then transitioned to an off level; a peak current detector asserting a detection signal when a coil current of the converter reaches a predetermined peak current; a logic part generating a control pulse which is transitioned to an on level when the comparison pulse is transitioned to the on level, and is transitioned to an off level at a time which is later among the time when the comparison pulse is transitioned to the off level and the time when the peak current detection signal is asserted; and a driver switching a switching transistor of the converter based on the control pulse.


Find Patent Forward Citations

Fukushima, Shun. (2017). Dc/dc converter, control circuit and control method thereof, and electronic apparatus (U.S. Patent No. 9685858). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9685858

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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