Next-Generation Solid-State Transformers and DC/DC Converters for Emerging Data Centers

This talk presents next-generation solid-state transformers (SSTs), including advanced two-stage architectures and a capacitor-free single-stage SST that eliminates bulky DC-link components. The proposed designs and control strategies significantly improve efficiency, power density, and system reliability. We will also showcase developed 800V/48V and 48V/1V transformerless DC-DC converters tailored for AI data center power delivery. In addition, AI-enhanced predictive control enables fast dynamic response and precise voltage regulation under highly variable workloads. The overall approach provides a scalable and practical pathway toward more efficient, high-density, and sustainable data center power infrastructures.