Multiphysics challenges with Heterogeneous Integrated Voltage Regulator based Power Delivery Architectures

Heterogeneous integration of power delivery circuits provides for a system-scaling opportunity in the post-Moore era. However, the integrated voltage regulator (IVR) poses complex design challenges. In this paper, the fundamental challenges and benefits, arising from the IVR-based power delivery system, in the electrical, thermal, and electromagnetics domains are analyzed. To verify the analysis, a comparison study of the regulator architectures with and without heterogeneous integration is considered. Also, metrics for the IVR design space are provided as measures to address its integration complexity and figure-of-merit.