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.:
Date of Patent:
Nov. 07, 2017
Filed:
May. 13, 2016
Rohm Co., Ltd., Ukyo-Ku, Kyoto, JP;
Naoki Inoue, Kyoto, JP;
ROHM CO., LLTD., Ukyo-Ku, Kyoto, JP;
Abstract
A first variable voltage source VSgenerates a first threshold voltage Vwhich is variable. A first zero current detection comparator ZC_CMPcompares a first voltage Vat a first input node ACwith the first threshold voltage V, and generates a ZC_DETsignal which indicates a comparison result. A first adjustment comparator ADJ_CMPcompares the first voltage Vwith a first reference voltage V. A first adjustment unit adjusts the first threshold voltage Vgenerated by the first variable voltage source VS, based on the output VF_DETof the first adjustment comparator ADJ_CMP. A control logic switches the state of a bridge circuit according to at least the first detection signal ZC_DET