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Efficiently bridging 48V and 12V systems applications Vicor modules

The need for 48V to support 12V

The need for 48V to support 12V

Data center, automotive and advanced industrial markets are deploying 48V power delivery networks (PDNs) as system power levels continue to increase; 48V based architectures maximize power network efficiency while maintaining Safety Extra Low Voltage (SELV) levels. The growing use of 48V PDNs requires compatibility for powering legacy 12V systems and infrastructure. Conventional 1/8 and 1/4 open frame brick converters are large and bulky and do not meet the power density needs of advanced systems. In addition, conventional converter topologies have inefficiencies that can reduce the 48V distribution gains.

Applications transitioning to 48V

Computing and data center

Computing 

As rack power increases to meet the demands of cloud and AI computing workloads the move to 48V has begun and is being supported by the Open Compute Project (OCP) consortium with its Open Rack Standard V2.2 for distributed 48V server backplane architectures and a 48V standard operating voltage for AI Open Accelerator Modules (OAM). These new standards require 48V to 12V and 12V to 48V compatibility to support 12V legacy backplanes and 12V multiphase VRs for processors. Learn more

Automotive solutions

Automotive 

The need to meet new CO2 emissions standards while also increasing vehicle performance and adding new features has brought about the era of electrification and a new 48V standard LV148. Providing power to conventional 12V electric and the growing number of advanced 48V loads requires high-density module usage versus larger and bulkier discrete type solutions automotive uses today. Learn more

Robot solutions

Advanced industrial 

This broad and expanding set of applications has high power requirements but have some form of human contact for operation or maintenance reasons. Maintaining Safety Extra Low Voltage (SELV) levels is important. Applications such as large scale LED displays, Robots and ATE (Automatic Test Equipment) take advantage of 48V power delivery but have multiple lower power 12V based loads. Providing power systems engineers with a high density, easy to use 48V to 12V power module simplifies their design and power system footprint. 

Higher performance 48V to 12V conversion that rivals conventional solutions

Vicor has introduced new high-density and high-efficiency module solutions for bridging 48V to 12V and 12V to 48V systems. These regulated and fixed-ratio converters are enabling 48V PDN deployment with its inherent efficiency advantages while alleviating the burden of re-designing 12V legacy systems. These converters establish new power conversion performance standards along with options for various application needs.

Benefits of Vicor modules

Benefits of Vicor modules

Density

High density

Modular

Modular and scalable

Efficiency

Efficiency up to 98%

Lightweight

Lightweight

Vicor power modules for bridging 48V and 12V

The new standard for 48V to 12V conversion

Vicor DCM 6x the density

6x reduction in density vs. conventional 1/4 brick-sized products

The DCM3717 has established a new power density benchmark for regulated 48V to 12V conversion with a 6x reduction in size over a conventional 1/4 brick converter. The compact size of the DCM3717 allows for easy board placement on existing 12V boards eliminating the need for a major redesign. Parallel operation is also possible to attain higher power levels above the 750W capability of one module. The DCM3717 is a complete converter solution requiring minimal external components adding to its high-density, low-impact design capability.

DCM3717

DCM3717

Input: 40 – 60V 

Output: 10 – 13.5V

Power: 750W 

37 x 17 x 7.4mm
 

Buck regulators for lower power downstream loads 

For lower power applications, the PI3526 ZVS Buck delivers 200W from a 10 x 14 x 2.5mm packaged LGA SiP and the PI3546 ZVS Buck delivers 100W from a 10 x 10 x 2.5mm LGA SiP; both devices have 96% peak efficiency. Parallel operation is also possible to attain higher power levels. ZVS Bucks require an external inductor and input/output ceramic capacitors. 
 

PI352x buck regulator

PI3526

Input: 30 – 60V 

Output: 6.5-14V

Power: 200W 

10 x 14 x 2.5mm

PI354x buck regulator

PI3456 

Input: 36 – 60V 

Output: 6.5 – 14V

Power: 100W 

As small as 10 x 10 x 2.5mm 

Highest performance for 48V to 12V and 12V to 48V conversion

Fixed ratio converters offer an alternative to regulated converters providing higher power density and efficiency. The NBM2317 is inherently bidirectional with a K:1/4 in step-down operation and K:4/1 in step-up mode offering the same efficiency processing power in either direction. The NBM2317 requires minimal external components and can be easily paralleled to attain higher power levels.

NBM2317

NBM2317

Fixed ratio conversion: 1/4

Input: 38 – 60V step-down, 9.5 – 15V step-up

Output: 9.5 – 15V step-down, 38 – 60V step-up

Power: 800W continuous, 1kW peak

23 x 17 x 7.4mm

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