New 10kW AC-DC Converter for High-Density Server Racks

October 16, 2018

Vicor-RFM-coldplateToday we announced an AC-DC converter module called the “RFM” that converts 3-phase AC to up to 10kW of regulated 48VDC. This new power component uses a low-profile power tablet form-factor measuring just 24cm x 15cm x 1.5cm, enabling unprecedented power density. It has been designed to optimize the use of space in a rack, and four RFMs in parallel can supply 40kW of power within 1U of rack space, including input-disconnect circuitry, rectification and hold-up energy storage at 48V. The RFM power tablet package also provides adept thermal management for advanced cooling, including liquid cooling.

48V (including 54VDC) distribution is the emerging standard in high-power racks, allowing smaller-gauge wiring and substantially lower distribution losses than legacy 12VDC 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 3-phase AC to sub-1V for high-density server rack applications, including demanding HPC and AI inference and learning applications.

The RFM provides a power-factor-corrected, regulated, and isolated DC output with integrated filtering and built-in fault protection for redundant operation. The RFM can be configured to accept worldwide 3-phase AC mains from 200 to 480VAC.

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