NVIDIA's 800V HVDC Native architecture eliminates legacy AC distribution. Power flows from the MV bus through a Solid State Transformer directly to 800V DC — fewer conversions, 5% higher efficiency, 40% smaller footprint. The GB200 NVL72 natively supports it. Tarxon's SST makes it possible.
Today's AI data centers convert power four or five times between the utility feed and the GPU: HV to MV, MV to 480V AC, 480V to 48V DC (PSU), 48V to 12V (VRM), and 12V to core voltage. Each conversion loses 1-3% efficiency. At 100 MW scale, those losses represent millions of dollars annually — and megawatts of waste heat that must be cooled.
NVIDIA's 800V HVDC Native architecture collapses this chain. A Solid State Transformer converts medium voltage (10 kV class) directly to 800V DC. The 800V DC bus runs through the facility, and rack-level converters step down to GPU voltage. Fewer stages, less loss, less cooling, less copper, less space.
This is not a theoretical future — NVIDIA has published the 800V HVDC standard, and early adopters are already designing facilities around it. The bottleneck is the SST: a power-electronics-based transformer that can operate at medium voltage with the reliability utilities demand. That's what Tarxon is building.
MV → 800V DC → GPU, instead of MV → 480V AC → 48V DC → 12V → core
~5% total efficiency gain at facility level — translates to megawatts saved at scale
No bulky 480V switchgear, PDUs, or UPS. More floor space for compute, less for power infrastructure
The Solid State Transformer replaces the conventional power transformer + rectifier chain with a single power-electronics-based conversion stage.
The Solid State Transformer is a power-electronics-based voltage converter that replaces the conventional iron-core transformer for MV-to-LV conversion. Tarxon's SST is designed specifically for data center applications.
| Input Voltage | 10 kV AC class · 8.5–11.5 kV operating range |
| Output Voltage | 240 / 336 / 750 / 800 / 1000 VDC selectable (incl. NVIDIA 800V standard) |
| Conversion | AC-DC with galvanic isolation, single stage |
| Topology | Modular multilevel, SiC-based power stages |
| Efficiency | > 98% at rated load |
| Power Density | 3-5x higher than conventional transformer + rectifier |
| Bidirectional | Supports regenerative braking and V2G applications |
| Protection | Integrated fault current limiting, arc-flash reduction |
| Monitoring | Embedded sensors, SCADA / IEC 61850 interface |
| Status | Technology roadmap — development in progress |
Designing next-generation AI training clusters at 100+ MW scale where every percent of efficiency translates to millions in savings.
Deploying NVIDIA GB200 NVL72 and next-gen GPU racks that natively support 800V DC input.
Building new facilities with future-proof power architecture that can serve both legacy AC and HVDC tenants.
Specifying power systems for clients who want to be ready for HVDC without redesigning the facility later.
NVIDIA publishes 800V HVDC Native specification. GB200 NVL72 ships with native 800V DC input.
Hyperscale operators pilot SST-powered 800V DC distribution in new AI training facilities.
800V HVDC becomes the default architecture for new AI data center construction. Legacy AC retrofit market emerges.
800V DC distribution displaces 480V AC as the dominant power architecture for high-density compute.
Whether you're designing a new facility or planning a retrofit path, our engineering team can help you evaluate SST integration and 800V DC distribution for your next AI data center.
Roadmap walkthrough scheduled within 24 hours — direct call with our SST engineering lead.