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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 9694694 B1

PDFFull Text
Date of Patent:
Jul. 04, 2017

Filed:

Jan. 21, 2013

In-vehicle step-down switching power supply, in-vehicle electronic control device, and idle stop system

Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;

Inventors:

Ayumu Hatanaka, Tokyo, JP;

Takuya Mayuzumi, Hitachinaka, JP;

Chihiro Sato, Hitachinaka, JP;

Assignee:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Jared Fureman

Assistant Examiner:

Joel Barnett

Int. Cl.
CPC ...
B60L 11/18 (2006.01); H02M 3/158 (2006.01); H02M 1/44 (2007.01); H02M 3/156 (2006.01); H02M 1/08 (2006.01); H02M 1/14 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
B60L 11/18 (2013.01); H02M 1/08 (2013.01); H02M 1/14 (2013.01); H02M 1/44 (2013.01); H02M 3/156 (2013.01); H02M 3/158 (2013.01); H02M 2001/0006 (2013.01);
Abstract

Provided is an in-vehicle step-down switching power supply capable of obtaining a stable output while suppressing nose in a harmful frequency band even when an input voltage decreases. The in-vehicle step-down switching power supply includes a switching frequency control unit and the switching frequency control unit includes a switching frequency range setting unit that changes a switching frequency between fa and fb and a switching frequency path setting unit that skips a frequency band from fd to fe between fa and fb, via an intermediate frequency fc between fa and fb.

Find Patent Forward Citations

Hatanaka, Ayumu. (2017). In-vehicle step-down switching power supply, in-vehicle electronic control device, and idle stop system (U.S. Patent No. 9694694). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9694694

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

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