Shared Power Rail Peak Current Manager

Various embodiments include a shared power rail monitoring circuit included in integrated circuits configured to manage worst case power on a shared power rail within the integrated circuit. Various embodiments include circuit components configured to determine allocated currents for each processing block or subsystem core on the shared power rail based on operating parameters of each processing block or subsystem core, and set a mitigation level for one or more processing blocks or subsystem cores on the shared power rail based at least in part on the determined allocated currents for each processing block or subsystem core on the shared power rail. The operating parameters may be voltage or voltage mode, temperature and operating frequency of each processing block or subsystem core.