By Michael De Rooij, GaN Application Fellow, Efficient Power Conversion
Alejandro Pozo, Director of Applications Engineering, Efficient Power Conversion
Ionel “Dan” Jitaru, CEO, Rompower Energy Systems

AI servers are forcing power architectures to move in two directions at once: toward much higher distribution voltage and toward much higher processor power requirements. An 800 VDC rack bus can reduce distribution losses, but it also creates a demanding conversion problem: thousands of watts must be transformed efficiently into low-voltage, very high-current rails close to the load. A modular input-series, output-parallel (ISOP) architecture offers a path. By dividing the 800 V input among eight LLC stages and combining their outputs, it enables the use of fast, low-voltage GaN devices while distributing heat and current. Three implementations illustrate the approach.

Read More – Bodo’s Power Systems, November

Maurizio Di Paolo Emilio, Director of Global Marketing Communications at EPC