The pace of technological advancement is relentless, with new concepts like AI, the metaverse, 5G, and more sweeping across the tech landscape. The rise of AI in areas such as chatbots and graphic design software has profoundly transformed the way we live, work, and learn. Further development of AI relies heavily on extensive data learning, which necessitates specialized AI servers. These servers require varying voltages for different interior components to ensure a reliable operation, and this is where DC-DC converters play a pivotal role. Delta has been investing in this field for years and has recently introduced a range of DC-DC converters to meet the demands of the AI server market.

AI servers are manufactured with upmarket GPU, TPU (Tensor Processing Unit), FPGA (Field Programmable Gate Array), and other high-end processors and require power consumption that may go up to ten times more than traditional servers. That has prompted a transformation of the busbar design which the server board input power voltage elevates from 12V to 48V to reduce unnecessary power loss and increase rack energy efficiency. But other components inside the servers, such as DDR5 SDRAMs, PCle SSDs and VRMs (voltage regulator modules), still require 12V or even lower input voltage to operate, prompting rising demand for DC-DC converters. 

This latest demand has led Delta, which has long developed DC-DC converters, to launch the regulated RBC Series and the bi-directional UBC Series. The RBC Series is a set of regulated DC-DC converters that can stably convert 40V to 60V input range into 12V output voltage. The Series also features a 200W to 1,600W power output and a 98.3% power conversion rate. It also supports the PMBus communication protocol to upload voltage conversion data to clients’ monitor platforms and send alerts when anomalies occur. The Series is applicable to AI and other server boards.

The other DC-DC converter for AI servers is the bi-directional UBC Series, which satisfies the demands of data centers that co-exist with 12V and 48V power distribution lines. It can convert from 12V to 48V or in a reversed direction. In addition, the Series has up to 98% power conversion efficiency and PMBus communication accommodation for power loss reduction and reliability enhancement. Its U50SU4P180 model features a super high 5,300 W/inch3 power density to scale down installation space. When applied to AI servers, the UBC Series, along with voltage regulators, can provide power to CPU processors, GPU accelerators, and ASICs (Application Specific Integrated Circuits).

Delta has long collaborated with many renowned multinational tech corporations, including world-class manufacturers from the AI industry. Our DC-DC converters are approved by clients in regards to performance, reliability, and quality. As higher power data center requirements surge due to the rapid development of AI technologies, Delta envisions higher than 48V input voltage for server boards to lower electricity loss and is now developing the next-generation DC-DC converters, aiming to address a larger margin of input voltage requirements in the future.