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. 01, 2005
Filed:
Apr. 21, 2004
Jiun-chiang Chen, Taichung, TW;
Hsin-hsin Ho, Sanchong, TW;
Hung-i Wang, Changhua, TW;
Liang-pin Tai, Tainan, TW;
Jiun-Chiang Chen, Taichung, TW;
Hsin-Hsin Ho, Sanchong, TW;
Hung-I Wang, Changhua, TW;
Liang-Pin Tai, Tainan, TW;
Richtek Technology Corp., Hsinchu, TW;
Abstract
In a time-sharing current sense circuit for a multi-phase converter, a common transconductive amplifier is selectively connected to the channels of the converter power stage by a plurality of first switches under the control of a set of control clocks to detect the channel current of a selected channel among the channels so as to generate a sense current, and a sense current generated by the common transconductive amplifier from the sensed channel current is switched by a plurality of second switches under the control of the same control clocks to connect to one of a plurality of sampling-and-holding circuits each corresponding to one of the channels to generate a current sense signal to modulate the channel current of the selected channel.