PRESENTATION
Power Semiconductor Solutions for 800V Datacentre Architectures
Today's server power supply architectures are based on AC/DC conversion within the IT racks and utilisation of 48V DC power distribution. With increasing power demands of AI servers these existing power supply architectures reach their limits. To overcome these limits the AC/DC conversion is moved to dedicated cabinets and DC distribution voltages are increased to 800V. Inside the IT racks DC/DC converters step down the 800V DC to the necessary operating voltages of the computing platforms. Of course, the highest possible levels of power conversion efficiency are required. ROHM’s modern wide band gap power semiconductor solutions can help realise the necessary power conversion units for these new architectures.
Dr. Christian Felgemacher
ROHM Semiconductor Europe
Dr. Christian Felgemacher graduated in 2011 with a Master of Engineering from the University of Edinburgh. He was a research assistant at University of Kassel from 2012 to 2017. In this time, his focus topics were the reliability of power semiconductors and the usage of wide-bandgap power devices in renewable energy applications. He completed his doctorate in 2018. Christian has been with ROHM since 2017 when he joined as an application engineer. He is responsible for the application engineering department since 2023. In October 2025, ROHM appointed Dr. Christian Felgemacher as Director Application Engineering.