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:
Oct. 09, 2018
Filed:
Aug. 17, 2017
Richtek Technology Corporation, Zhubei, HsinChu, TW;
Chieh-Min Lo, Miaoli, TW;
Yi-Syue Jhu, New Taipei, TW;
RICHTEK TECHNOLOGY CORPORATION, Zhubei, Hsinchu, TW;
Abstract
An operation mode determination circuit for sensing a setting resistance between a setting node and a reference voltage or a ground to determine an operation mode, comprises: a pull-up power circuit, for generating a pull-up power onto the setting node, and a floating detection circuit. The pull-up power circuit adjusts the pull-up power at a first power level, and triggers an low power detach detection procedure after a predetermined first time period, wherein the pull-up power is adjusted at a second power level which is less than the first power level to an extent that an electrolysis effect is negligible when an electrolytic substance exists and is coupled to the setting node. The floating detection circuit triggers the operation mode detection procedure when the voltage on the setting node is higher than a first voltage threshold in the low power detach detection procedure.