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. 08, 2005
Filed:
Nov. 25, 2003
Anthony R. Bonaccio, Shelburne, VT (US);
Allen P. Haar, State College, PA (US);
Michael A. Sorna, Hopewell Junction, NY (US);
Ivan L. Wemple, Shelburne, VT (US);
Stephen D. Wyatt, Jericho, VT (US);
Anthony R. Bonaccio, Shelburne, VT (US);
Allen P. Haar, State College, PA (US);
Michael A. Sorna, Hopewell Junction, NY (US);
Ivan L. Wemple, Shelburne, VT (US);
Stephen D. Wyatt, Jericho, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A structure and method for damping LC (inductance-capacitance) ringing in integrated circuit (IC) power distribution systems. The structure comprises a resistance electrically connected in parallel with a plurality of electrical switches. The resistance and electrical switches are electrically connected in series with the package and on-chip power distribution circuit. When on-chip switching activity creates a sudden and appreciable change in IC power demand the electrical switches are opened to temporarily increase the resistance in series with the power supply. This serves to dampen the power-distribution LC ringing. Later, the electrical switches are closed to shunt the series resistance and reduce the level of steady-state voltage drop in the power structure.