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:
Jan. 22, 2008
Filed:
Dec. 03, 2004
Weidan LI, San Jose, CA (US);
Benjamin Mbouombouo, San Jose, CA (US);
Johann Leyrer, Munich, DE;
LSI Logic Corporation, Milpitas, CA (US);
Abstract
An on-chip substrate voltage controller which includes a plurality of chains of interconnected loaded ring oscillators connected to a multiplexer, where the multiplexer is configured to average the outputs from all the chains of interconnected loaded ring oscillators. An output of the multiplexer is connected to a comparator, such as a phase detector. The comparator also receives an output from a PLL, and is configured to compare the output of the multiplexer to the output of the PLL. An output of the comparator is connected to the controllable voltage regulator. The controllable voltage regulator receives a voltage in as well as the output of the comparator, and applies a substrate bias depending on what is received from the comparator.