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The Power Stamp Alliance between four established power solutions suppliers has been established to provide collaborative solutions for 48V-to-low-voltage on-board DC-DC power converters.
The alliance was announced at the Open Compute US Summit 2018.
These 48V direct conversion DC-DC modules, or ‘power stamps’, primarily target high-performance computers and servers being used in large data centers, many of which follow the principles of the Open Compute Project (OCP).
By creating and sharing a specification for a standard product footprint and functions, the Power Stamp Alliance has created a multivendor ecosystem to assure practical levels of alternate source capability to server and storage system manufacturers, while encouraging a competitive supply chain through differentiation in topology, circuitry, and performance from multiple, independent manufacturers.
The first processor architectures addressed by the Power Stamp Alliance include the Intel VR13 Skylake CPUs, Intel VR13-HC Ice Lake CPUs, DDR4 memories, IBM POWER9 (P9) processors and high-current ASIC and/or FPGA chipsets supporting the SVID or AVS protocols.
The electrical concept of power stamps uses the principle of a discrete or main stamp unit controlling up to five satellite stamp units that combine to achieve more than 600A in total current capability.
The size and powertrain footprint of the main and satellite power stamps are the same, simplifying the design process for OEMs. As the power demands of processor and memory devices increases, the PSA specification provides a scalable solution that can be used in tandem with existing power-conversion devices.
IHS Markit data centers, cloud and IT Infrastructure research analyst Maggie Shillington says: “The kind of plug-and-play solutions enabled by the Power Stamp Alliance should appeal not only to the hyperscale data center builders but also to high performance computer makers and telecom equipment suppliers as the stamps themselves should be easy to integrate into their systems.
“Driving efficiency and power density down to the board level within an open framework follows the values of initiatives such as the Open Compute Project and Project Scorpio and allows each vendor to focus on their own expertise and experience.”
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