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. 15, 2026
Filed:
Jul. 29, 2024
Sifive, Inc., Santa Clara, CA (US);
Edward Mclellan, Holliston, MA (US);
SiFive, Inc., Santa Clara, CA (US);
Abstract
Described are systems and methods for power management. A processing system includes one or more cores and a connected power management unit (PMU). The PMU is selected from one of: a first level PMU which can power scale a; a second level PMU which can independently control power from a shared cluster power supply to each core of two or more cores in a cluster; a third level PMU where each core includes a power monitor which can track power performance metrics of an associated core; and a fourth level PMU when a complex includes multiple clusters and each cluster includes a set of the one or more cores, the fourth level PMU including a complex PMU and a cluster PMU for each of the multiple clusters, the complex PMU and cluster PMUs provide two-tier power management. Higher level PMUs include power management functionality of lower level PMUs.