Hard- and Soft-Switched
Technical Lecture Session
DC-DC Converters for Data Centers
hybrid converter, switched-capacitor converter, resonant switched-capacitor converter, bus converter, soft-charging, soft-switching, fixed-ratio
This work presents an 8-to-1 multi-phase resonant switched-capacitor converter design that features the least possible number of switches and capacitors. A 48-to-6 V prototype with 40 A output current for data center applications was built and tested. The prototype achieved 98.6% peak efficiency (98.0% including gate drive loss) and 1675W/in3 power density.