Vicor Power Solutions to Maximize Performance for AI, HPC and Data Computing

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Vicor Power Solutions to Maximize Performance for AI, HPC and Data Computing [Copy link]

Power supply is now the limiting factor

Power delivery and power efficiency have become the biggest issues for large-scale computing systems. With the advent of ASICs and GPUs that handle complex AI functions, the industry has experienced a dramatic increase in processor power consumption. With the adoption of AI functions in large-scale learning and inference application deployments, rack power has also increased. In most cases, power delivery is now the factor limiting computing performance, as the current consumed by new CPUs seems to be increasing all the time. Power delivery requires not only power distribution, but also efficiency, size, cost, and thermal performance.

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Front-end solutions

Enabling HVDC power distribution

Bus Converter Modules (BCMs) can be used to convert HVDC to isolated SELV outputs for 48V power distribution. The through-hole mount package has a package size of 61x23x7.2 mm, which enables applications where HVDC is distributed within the rack or directly to the server, allowing for optimal layout in air-cooled, liquid-cooled or immersion-cooled systems. Fixed ratio conversion achieves 98% peak efficiency and up to 35A output current, fully meeting the needs of high-power processors, memory, SSDs and other features.

AC power supply in a rack or cabinet

RFM is a solution for high power computing racks and immersion enclosure systems. The flat form factor allows for easy integration into advanced cooling systems while providing the option to relocate the AC power within the system.

Solutions for powering processors

Vertical Power Delivery (VPD)

VPD further eliminates power distribution losses and VR PCB area usage. VPD is similar in design to the Vicor LPD solution, with the added integration of bypass capacitors in the current multiplier or GCM module.

Lateral Power Delivery (LPD)

Bus Converter Modules (BCMs) can be used to convert HVDC to isolated SELV outputs for 48V power distribution. The through-hole mount package has a package size of 61x23x7.2 mm, which enables applications where HVDC is distributed within the rack or directly to the server, allowing for optimal layout in air-cooled, liquid-cooled or immersion-cooled systems. Fixed ratio conversion achieves 98% peak efficiency and up to 35A output current, fully meeting the needs of high-power processors, memory, SSDs and other features.

Factorized Power Architecture

The factorized power architecture breaks down the power supply into dedicated voltage regulation and voltage transformation functions. These two functions can be optimized and deployed separately to provide a high-density, high-efficiency solution. This solution is different from the traditional 12V multi-phase solution, which mainly relies on a parallel array of switching regulators and inductors. This traditional solution is difficult to promote: the greater the power, the more parallel regulators, the larger the overall size, and the longer the distance the processor has to transmit high current. All of this will cause more losses in the system.

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