AC/DC converter in tablet configuration enables high density racks
A three-phase, AC/DC converter module, the RFM, from Vicor, is capable of delivering 10kW of regulated 48V DC in a power tablet configuration measuring 9.4 x 5.9 x 0.6-inches (240 x 150 x 15mm).
The RFM provides a power-factor-corrected, regulated, and isolated DC output with integrated filtering and built-in fault protection for redundant operation. It can be configured to accept worldwide three-phase AC mains from 200 to 480V AC.
The low-profile power tablet design aids power density and thermal management, says Vicor. For example, four RFMs in parallel, including input-disconnect circuitry, rectification and hold-up energy storage at 48V, can supply 40kW of power within 1U of rack space.
The RFM power tablet package provides thermal management for advanced cooling, including liquid cooling, of high-power server racks for demanding high performance computing (HPC) and artificial intelligence (AI) inference and learning applications.
Vicor explains that 48V (including 54V DC) distribution is the emerging standard in high-power racks using smaller-gauge wiring. It achieves substantially lower distribution losses, than legacy 12V DC distribution. In combination with Vicor 48V Power-on-Package (PoP) and 48V Direct-to-PoL solutions, the RFM enables dense and efficient end-to-end power system solutions, from three-phase AC to sub-1.0V AI processors at the point-of-load, confirms Vicor.
The 10kW power tablet RFM is the first in a new series of single and three-phase AC/DC modules featuring power outputs from 150 to 15kW.
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