News: Microelectronics
2 June 2026
EPC supporting NVIDIA MGX-based AI infrastructure with 800V-to-12.5V power conversion
Efficient Power Conversion Corp (EPC) of El Segundo, CA, USA — which makes enhancement-mode gallium nitride on silicon (eGaN) power field-effect transistors (FETs) and integrated circuits for power management applications — has provided additional details on its EPC91123 evaluation board, an 800VDC-to-12.5VDC, 6kW isolated converter designed to support next-generation AI data-center power architectures. As a contributor to the NVIDIA MGX AI Factory ecosystem, EPC contributes advanced GaN-based power conversion solutions designed to support emerging 800VDC server architectures, enabling higher power density, improved efficiency, and scalable rack-level power delivery for next-generation AI infrastructure.
By enabling direct 12.5V conversion and eliminating the need for a 48V intermediate stage, the solution improves overall system efficiency by 1–2%. The converter is built on an input-series, output-parallel (ISOP) LLC topology and leverages Gen7 devices, including the 3.3mm x 2.6mm, 40V, 0.8mΩ EPC2366 and 150V, 2.2mΩ EPC2305. The solution achieves 98.2% peak efficiency and 97% full-load efficiency. Optimized for space-constrained AI server environments, the board delivers high power density in a compact 104mm x 47mm x 8mm form factor.
“AI data centers consume tremendous amounts of power, making it critical to reduce power conversion stages to improve efficiency and power density, especially in 800V architectures,” notes Alejandro Pozo, director of DC–DC System Engineering. “The ISOP topology is particularly well suited for high step-down-ratio power conversion, enabling improved transformer optimization and interleaved operation. It has been selected for our next 800VDC-to-6VDC platform,” he adds.
The EPC91123 builds on EPC’s broader strategy for 800VDC AI power delivery, where the firm is developing highly efficient conversion architectures spanning 800VDC to 48VDC, 12VDC and 6VDC to address different system-level requirements in AI infrastructure. By leveraging advanced GaN-based ISOP topologies and its latest Gen7 eGaN technology, EPC aims to provide scalable, high-density power solutions that improve efficiency, reduce distribution losses, and support next-generation accelerated computing platforms.
“NVIDIA MGX provides a modular foundation for scalable accelerated computing,” notes says CEO & co-founder EPC’s Alex Lidow. “A key element of NVIDIA’s strategy for AI infrastructure is the use of 800VDC power architecture, helping address the growing demands for efficiency and power density as AI compute scales,” he adds. “We are pleased to contribute to the NVIDIA MGX AI Factory ecosystem with advanced multi-level GaN-based power conversion solutions designed to support emerging 800VDC server architectures and next-generation AI infrastructure.”
EPC highlights Gen 7 GaN for AI infrastructure and GaN ICs for robotics at APEC
EPC develops power converter for 800VDC architecture in AI data centers
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