2026 is pivotal for 800VDC power in AI data centers.
Many vendors will launch solutions.
GaN and SiC devices are key for lower-voltage conversion.
What happened
DIGITIMES reports that 2026 will be a pivotal year for stabilizing 800VDC power architectures in AI data centers. Nvidia is unlikely to make major moves, but many power semiconductor vendors are expected to launch solutions.
Why it matters
The rise in GPU power consumption, driven by Nvidia's roadmap, is accelerating the 800VDC ecosystem. By 2027, the Rubin Ultra GPU is expected to enter mass production, with the Power Sidecar rack delivering 800VDC directly to compute racks.
What to watch
GaN power devices are becoming indispensable for lower-voltage conversion (e.g., 800VDC-to-54VDC, plus emerging 12VDC and 6VDC levels), potentially replacing silicon MOSFETs in secondary-side circuits. SiC power devices also play a key role in SSTs.
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The 800VDC power architecture is becoming clearer as power semiconductor vendors align their strategies around Nvidia's GPU roadmap. The shift to lower voltages (12VDC and 6VDC) and the use of GaN devices suggest a transition away from traditional silicon MOSFETs. SiC power devices are also pivotal for solid-state transformers (SSTs), which handle diverse power loads. However, the real challenges will begin after industry standardization, as vendors must balance multiple factors to meet the demands of next-generation data centers.
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