ASCENT Theme 3/ Non-isolated 48V-to-1V Heterogeneous Integrated Voltage Converters for High Performance Computing in Data Centers

Title: Non-isolated 48V-to-1V Heterogeneous Integrated Voltage Converters for High Performance Computing in Data Centers

Presenter: Minxiang Gong PhD Student - Prof. Arijit Raychowdhury's group (Georgia Tech)

Abstract: The conventional half bridge topology for DC-DC conversion is not suitable for high voltage conversion. Consequently, recent advances in hybrid topologies have gained attention and show promising results for integrated in-package power management. In this presentation, we will provide a topology review of 48V-to-1V high voltage converters. We will start from the challenges of half bridge topologies, we will discuss derivations, features, design trade-offs and outlook of hybrid topologies. Finally we will discuss our first design of a 48/1V GaN based integrated fully synchronous buck converter where we measured >76% power efficiency with 13% improvement in FoM compared to the SoA. We will conclude with our ongoing research and plans. This work is done in collaboration with Dr Xin Zhang of IBM. 

This meeting is only available to the JUMP research community, such as Principal Investigators, Postdoc researchers, Students, and Industry/Government liaisons