Current multiplier chipset enables 48V AI accelerator cards
Owing to their small footprint and low profile (45.7×8.6×3.2mm), current multipliers are placed close to the processor enabling reduced power distribution network (PDN) losses and higher power system efficiency. Powering GPU and OCP Accelerator Module (OAM) Artificial Intelligent (AI) cards, the 4609 ChiP-set is in mass production and available to new customers on Vicor’s Hydra II evaluation board. To raise the bar of current capability above the limits of LPD, Vicor’s pioneering Vertical Power Delivery (VPD) will soon 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. A GCM (“Geared Current Multiplier”) is a specialized VPD embodiment incorporating a Gearbox capacitor network as a layer in the vertical stack. By supplying current directly under the processor and eliminating PDN losses, GCMs will soon facilitate current densities reaching up to 2A/mm2.
Vicor Corporation – www.vicorpower.com
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