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:
Apr. 10, 2012

Filed:

May. 19, 2009
Applicants:

Yasushi Kojima, Utsunomiya, JP;

Naoyuki Mimatsu, Utsunomiya, JP;

Seigo Murashige, Utsunomiya, JP;

Inventors:

Yasushi Kojima, Utsunomiya, JP;

Naoyuki Mimatsu, Utsunomiya, JP;

Seigo Murashige, Utsunomiya, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02J 1/12 (2006.01); G05F 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A triangular-wave current flows through a reactor of a DC/DC converter for converting voltages between increased and reduced levels. Surges are reduced, which are developed in an output voltage serving as a control voltage when the triangular-wave current changes across a zero value at which the current direction is changed. When a primary current flowing through the reactor changes across 0 [A] (zero value) at which the direction is changed, within an adjustment range, a feedback coefficient by which to multiply the error between the control voltage and a target voltage is multiplied by k (k>1) so as to increase a feedback amount. Surges developed in the control voltage due to a dead time when the primary current changes across 0 [A] are reduced.


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