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:
Dec. 27, 2011
Filed:
Oct. 10, 2008
Chun Kai Derrick Wei, Hsinchu County, TW;
Kuan-yeu Chen, Hsinchu Hsien, TW;
Hung I Wang, Hsinchu County, TW;
Song-yi Lin, Taipei, TW;
Chun Kai Derrick Wei, Hsinchu County, TW;
Kuan-Yeu Chen, Hsinchu Hsien, TW;
Hung I Wang, Hsinchu County, TW;
Song-Yi Lin, Taipei, TW;
MStar Semiconductor, Inc., Hsinchu Hsien, TW;
Abstract
A DC converter and a mode-switching method used in an electronic apparatus are included. The electronic apparatus includes a subsystem circuit. The DC power converter comprises a first voltage converting circuit electrically connected to the subsystem circuit, receiving a system voltage and a first reference voltage, and converting the system voltage to a first output voltage based on the first reference voltage; and a second voltage converting circuit electrically connected to the subsystem circuit and receiving the system voltage and a second reference voltage, and converting the system voltage to a second output voltage to the same output end of the first voltage converting circuit based on the second reference voltage; wherein the second voltage converting circuit outputs the second output voltage to the subsystem circuit when the first output voltage at the output end is smaller than a threshold.