Core Insights - The report from Dongfang Securities indicates that SST (Solid State Transformer) is expected to become the optimal choice for direct current power supply solutions in data centers, with NVIDIA highlighting SST as a mainstream technology in its AIDC white paper [1] - The demand for new power supply solutions like HVDC (High Voltage Direct Current) and SST is clearly defined, driven by the increasing power requirements of AI data centers [1][3] Group 1: Trends in Power Supply Solutions - AIDC (AI Data Center) is experiencing a surge in power demand, with high voltage and high efficiency becoming critical trends [1] - Traditional AC/DC and DC/DC conversion methods lead to efficiency losses and increased maintenance burdens, necessitating more efficient and compact power architectures [1] - NVIDIA's collaboration with industry partners to propose an 800V HVDC power supply architecture aims to significantly enhance power efficiency and reduce electricity costs [1] Group 2: Advantages of SST - SST offers several advantages over traditional transformers, including higher efficiency, better power quality, modularity, and stable performance, which can greatly improve space utilization and power efficiency [1] - SST is projected to become the best choice for direct current power supply solutions in data centers in the long term [1] Group 3: Market Potential for SiC/GaN Devices - The demand for SiC (Silicon Carbide) and GaN (Gallium Nitride) devices is expected to rise due to the implementation of new power supply solutions like HVDC and SST [3] - The market for SiC/GaN devices in 800V HVDC data center power supply systems could reach $2.7 billion by 2030, indicating significant growth potential [3] - NVIDIA's partnerships with various SiC/GaN manufacturers suggest a strong and certain demand for these devices in future AIDC power systems [3] Group 4: Current Market Penetration - As of 2024, the penetration rate of silicon carbide in global power semiconductors is projected to be 4.9%, while gallium nitride is at 0.5% in 2023 [2] - Some investors express concerns about the limited growth potential for wide bandgap semiconductors due to the gradual increase in silicon carbide's penetration in the electric vehicle sector [2]