Why 800V DC Data Centers Are Inevitable | Flex's Chris Butler

Описание: Chris Butler, President of Embedded and Critical Power at Flex, joins Power Corner to break down why the shift to 800V DC data center architecture is now a foregone conclusion and why physics, not preference, is driving it. Just a year ago, the industry was still debating ±400V; today, there's simply not enough room for a 50-V bus bar to support megawatt-scale racks.

Butler walks through what's still unsolved: safety standards built for AC that don't translate cleanly to DC, arc-flash risk at blind-mate connectors, and the industry's "holy grail"—a single-stage 800V-to-0.6V power module that doesn't exist yet. He details how solid-state transformers could collapse today's fragmented, multi-stage power chain into a single 99%+-efficient conversion, and how Flex's utility acquisitions are targeting the grid-interconnect bottleneck between generation and data center load.

The conversation also covers a real-world grid event in Northern Virginia that's now driving new energy-storage requirements from PJM and ERCOT, why "data centers are bad for the grid" is an outdated narrative, and Flex's plans to spin out its data center and utility business in early 2027.

0:00 Intro
0:42 Why 800V DC is now inevitable
3:15 Safety standards, NFPA 70E, and arc-flash risk
4:50 The sidecar: bridging old and new infrastructure
8:57 Hybrid 800V/50V architecture and the path to native 800V servers
15:15 Solid-state transformers and the efficiency stack
20:55 Efficiency reframed: token-per-watt
22:26 Cooling's shrinking but still major footprint
25:09 Flex's utility acquisitions and the grid interconnect gap
29:48 Grid stability: the Northern Virginia event and new regulations
33:24 Flex's data center and utility spin-out

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