Abstract: Against the backdrop of accelerating digital transformation, data centers, as the core infrastructure of the digital economy, have entered a new phase of simultaneous large-scale expansion and energy efficiency upgrades. This paper focuses on the key technologies of green and low-carbon data centers. To address industry pain points such as low efficiency and high harmonics of uninterruptible power supplies, server power supplies, and other high-frequency switching power supply products under light loads in data center power systems, an intelligent sleep mode is proposed. Through precise load monitoring, intelligent load distribution, and reasonable redundancy design, the system ensures stable operation while effectively improving the efficiency of the data center power supply.