Improving Server and Industrial Power Supplies with SiC JFETs

Tutorial Overview 

It's the silicon carbide power enablement wave. Explore how SiC Cascode JFETs boost efficiency, power density, and reliability in AI data center and industrial PSUs with practical design and integration insights.

This tutorial describes how SiC Cascode JFETs (CJFETs) pair a SiC JFET with a silicon MOSFET to create a normally-off switch, delivering low on-resistance, fast switching, rugged operation, and superior performance compared to traditional silicon MOSFETs.

Gain practical design guidance for integrating JFETs into high-efficiency AC-DC and DC-DC power stages, addressing gate drive strategies, protection considerations, and thermal optimization. Through detailed circuit analysis, waveform evaluation, and application examples, the tutorial demonstrates how SiC CJFETs can yield significant improvements in power losses, system reliability, and overall PSU performance in both server and industrial environments.