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:
Sep. 20, 2005
Filed:
May. 17, 2004
Kent Huang, Taoyuan, TW;
Liang-pin Tai, Tainan, TW;
Hung-i Wang, Changhua, TW;
Jian-rong Huang, Hsinchu, TW;
Kuo-ping Liu, Hsinchu, TW;
Yu-fan Liao, Fengshan, TW;
Kent Huang, Taoyuan, TW;
Liang-Pin Tai, Tainan, TW;
Hung-I Wang, Changhua, TW;
Jian-Rong Huang, Hsinchu, TW;
Kuo-Ping Liu, Hsinchu, TW;
Yu-Fan Liao, Fengshan, TW;
Richtek Technology Corp., Hsinchu, TW;
Abstract
A delta-sigma DC-to-DC converter comprises a pair of high-side and low-side switches switched to convert an input voltage to an output voltage, a sense circuit to sense the output voltage of the converter to generate a feedback signal, a transconductive amplifier to amplify a difference between the feedback signal and a threshold signal to generate a differential current, a charging circuit connected with the differential current to generate a charging voltage, and a driver to compare the charging voltage with two reference signals to generate the pair of low-side and high-side driving signals.