D02.9 - An LLC DCX with Matrix Transformer for Datacenter Application

Thursday, March 26, 2026

12:00 PM - 1:45 PM CT

Location: Hemisfair Ballroom

Technical Dialogue Presenter(s)

Jinshi Du

Department of Electrical and Photonics Engineering, Technical University of Denmark

Presentation

Co-Author(s)

Bima Nugraha Sanusi

Danmarks Tekniske Universitet
Pinhe Wang

Technical University of Denmark
Tianming Luo (he/him/his)

Technical University of Denmark
ZO

Ziwei Ouyang

Technical University of Denmark

As power demands in data centers escalate with the proliferation of artificial intelligence (AI) workloads and high-performance computing, high-efficiency, high–power-density DCDC converters are becoming increasingly critical in power delivery systems. This paper proposes a novel integrated magnetic core geometry for a multiphase LLC converter. By merging two discrete EI cores into a single structure, the design eliminates the induced current in non-conducting windings caused by uncanceled flux and reduces the primary winding resistance by 50%. A 48V to 3V LLC converter prototype delivering 140A output is developed, achieving a power density of 1008W/in3 and a peak efficiency of 95.6%.