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:
Feb. 07, 2006
Filed:
Dec. 03, 2003
James S. Zeng, Cupertino, CA (US);
Sridhar Kotikalapoodi, Santa Clara, CA (US);
Lajos Burgyan, Mountain View, CA (US);
James S. Zeng, Cupertino, CA (US);
Sridhar Kotikalapoodi, Santa Clara, CA (US);
Lajos Burgyan, Mountain View, CA (US);
Fairchild Semiconductor Corporation, South Portland, ME (US);
Abstract
A power control circuit is provided containing a switch array, which includes segmented switches, a flying capacitor, an output voltage terminal, a feedback loop, and a digital voltage regulator block. The digital voltage regulator block includes an A/D converter, an encoder, an add-subtractor, and a gate logic. These power control circuits do not include pass transistors. A method is also provided, where the charge pumps of the power control circuit are operated in two-phase cycles including a charging phase and a pumping phase. The power control circuit is controlled in both of these phases, thereby reducing the ripple of the output voltage.