公开(公告)号：US20230205304A1

公开(公告)日：2023-06-29

申请号：US17563788

申请日：2021-12-28

Applicant: Advanced Micro Devices, Inc.

Inventor： Xiuting C. Man ,  Xiaojie He ,  Michael Leonard Golden ,  Richard M. Born

IPC: G06F1/3287 ,  G06F1/3206

CPC classification number: G06F1/3287 ,  G06F1/3206

Abstract: A system and method for efficient power management of an integrated circuit are described. In various implementations, a computing system includes an integrated circuit, multiple voltage regulators, and circuitry that detects when current drawn from a power rail from one of the multiple voltage regulators exceeds a limit. Upon detection, a single global alarm signal is asserted and conveyed to the integrate circuit. The integrated circuit includes at least a first group of functional blocks sharing a first power rail and a second group of functional blocks sharing a second power rail. When the global alarm signal is asserted, the functional blocks of the first group and the second group perform steps to immediately reduce power consumption. In order to maintain performance and satisfy a quality of service (QoS) parameter, a power management controller of the integrated circuit reassigns power limits shortly thereafter.