48V power for higher performance AI accelerator cards

May 14, 2020 //By Nick Flaherty
Vicor has launched a power management chipset for GPU, CPU, and ASIC processors powered directly from 48V in the data centre.
Vicor has launched a power management chipset for GPU, CPU, and ASIC processors powered directly from 48V in the data centre.

The Vicor 48V power management chipset consists of a driver, MCD4609, and a pair of MCM4609 current multiplier modules supply up to 650A continuous and 1,200A peak. The footprint and low profile (45.7mm x 8.6mm x 3.2mm) means current multipliers can be placed close to the processor enabling reduced power distribution network (PDN) losses and higher power system efficiency.

Powering GPU and the Open Compute Project's  OCP Accelerator Module (OAM) Artificial Intelligent (AI) cards, the 4609 ChiP-set is in mass production and available on Vicor’s Hydra II evaluation board. This is part of a key move to 48V power in the data centre:  

The 4609 ChiP-set adds to Vicor’s Power-on-Package portfolio of Lateral Power Delivery (LPD) parts, soon to be followed by Vertical Power Delivery (VPD) parts that will enable much higher current density. The VPD system delivers current from power converters vertically stacked under a processor through a capacitor network geared to a processor-specific pin-map.

The first VPD design will be a Geared Current Multiplier (GCM) that uses a capacitor network as a layer in the vertical stack. By supplying current directly under the processor and eliminating PDN losses, GCMs will soon achieve current densities reaching up to 2A/mm 2  says the company.

More details are at  www.vicorpower.com

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