Delta DC-DC Converters Address Input Voltage Conversion Requirements of AI Servers

Our daily lives are hugely affected by the latest novel technologies, such as metaverse, 5G, AI, and particularly the development of AI chatbots and art generators. The development of AI requires extensive data learning and training to grapple with a wide range of inquiries and needs specialized servers to fulfill the demands. These initial AI servers feature varying power voltage from electricity distribution to interior components, prompting demand for DC-DC converters, which Delta has long cultivated. Seizing these new opportunities, Delta has launched cutting-edge DC-DC converters that cater to market demands.

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 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, making the Series 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. When applied to AI servers, the UBC Series can meet voltage conversion demands to CPU processors, GPU accelerators, and ASICs (Application Specific Integrated Circuits) along with voltage regulators.

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 regard 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.