800V Rack Power (Power Shelves & PSUs)

100kW+ racks force 800V DC architectures, GaN/SiC conversion and new power shelves. Power density per rack is now a design constraint.

Power semis→PSU / shelf→Busbar→Rack

Tightness score ⓘ

#29 of 56

▲ Tightening

Supply concentration3

Lead time3

Capex intensity3

Geopolitical exposure3

Pricing power4

Lead time

6–12 mo

Theme 1M

−20.9%

% in uptrend

Metric to watch

800V DC rack adoption, power-shelf revenue, and GaN/SiC AI design wins.

What would prove us wrong

Weakens if rack densities stall and legacy 54V designs remain sufficient.

Dependencies

Equal-weight · rebased 100 · 1Y

Stocks we track

Who controls this bottleneck

Roles, not recommendations. Delayed prices; local currency.

Stock	Role	Listing	Last	1D	1M	3M	YTD	Off 52w high	Next earnings
2308.TW Delta Electronics	Power shelves and thermal for AI racks	TWSE Taiwan	NT$1,335.0	−9.80%	−27.2%	−10.7%	+39.4%	−46.8%	2026-10-28
MPWR Monolithic Power Systems	Voltage regulation for accelerators	NASDAQ US	$1,211.6	+1.07%	−11.0%	−9.7%	+34.4%	−28.1%	2026-10-29
IFX.DE Infineon Technologies	SiC/GaN power semis for 800V DC racks	XETRA Germany	€50.56	−6.39%	−14.9%	−20.6%	+35.0%	−42.5%	2026-11-10
VICR Vicor	High-density power modules	NASDAQ US	$191.1	−7.52%	−38.1%	−10.5%	+74.3%	−49.7%	2026-10-20
NVTS Navitas Semiconductor	GaN power ICs for AI power supplies	NASDAQ US	$8.48	−7.83%	−30.0%	−26.4%	+18.8%	−73.3%	2026-11-03
ON onsemi	SiC power and image sensors	NASDAQ US	$71.67	−4.74%	−10.5%	−10.9%	+32.4%	−46.5%	2026-11-02
2301.TW Lite-On Technology	AI server power supplies and shelves	TWSE Taiwan	NT$240.5	−4.56%	−14.4%	+31.2%	+51.1%	−24.2%	2026-10-30

Auto-updated