Specifications
Type
SAC-topology bus converter (BCM) module
Input Voltage
800 VDC (also supports 400 VDC)
Output Voltage
48 V (family also 50 V / 54 V)
Output Current
80 A
Output Power
3.8 kW
Efficiency
Over 97%
Package
CM-ChiP, 61 x 35 x 7.4 mm
Topology
Sine Amplitude Converter (fixed-ratio)
Thermal
Low thermal resistance, coplanar surfaces for cold-plate mating
Application
800VDC high-voltage DC distribution to AI supercomputer racks
Award
2026 Electronics Excellence Award (automotive innovation)
Vendor
Vicor Corporation
Overview
The Vicor BCM6135 is a Sine Amplitude Converter (SAC) bus converter that steps 800 VDC (or 400 VDC) down to 48 V, delivering 80 A — 3.8 kW of output power — at over 97% efficiency in a 61 x 35 x 7.4 mm CM-ChiP package.
It is built for the move to high-voltage DC distribution in AI data centers. High-density power modules with low thermal resistance and coplanar surfaces mate straightforwardly to liquid-cooling cold plates, which is what makes 800VDC distribution practical at rack level.
Reducing the distribution voltage step at the rack also cuts copper and busbar cost: running three conductors (-400 V, GND, +400 V) to each rack preserves 800V-powered operation.
Vicor's first chip fabrication facility is being expanded to support at least a $1.5 billion annual revenue run rate, reflecting AI-driven demand for these modules.
Key Benefits
Over 97% efficiency at 3.8 kW in a small CM-ChiP footprint. Enables 800VDC rack distribution with cold-plate-ready thermal paths and supports both 800VDC and 400VDC inputs.
Applications
800VDC AI data center rack power distribution; high-density GPU/XPU rack power shelves; EV battery voltage conversion with the same SAC module family.
Request a Quote — VICOR BCM6135 BUS CONVERTER — 800V TO 48V SAC MODULE FOR AI RACKS
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