Summary of Conference Call Records Industry Overview - The AI power supply equipment industry is experiencing significant technological changes, particularly in GPU power consumption, which has increased from 200W to 300W and may double in the future. The number of cards in cabinets is also rising, from 172 to potentially 288 cards, leading to increased cabinet power from 198kW to an expected 500kW or even megawatt levels by 2027-2028. This presents challenges for data center space architecture but also opportunities for leading domestic companies [2][6][10]. Key Points and Arguments - **Market Size and Pricing**: The price of power supplies is approximately 2 yuan per watt. A 200kW cabinet corresponds to a market space of about 40 billion yuan, with the overall market potentially reaching 100 billion yuan when including components like supercapacitors and BBO [4][5]. - **HVDC Technology**: As cabinet power exceeds 250kW, the need for higher energy efficiency will drive the adoption of HVDC paths, with penetration expected to rise from 10% to over 20% by 2026. Major overseas clients are choosing Delta and Veichi Technology, while domestic companies like Megmeet, Kehua, and Kstar are also actively positioning themselves [6][10]. - **Supercapacitors**: Supercapacitors are crucial in AI power supply devices, capable of handling millisecond-level fluctuations. For instance, the JD300 chip can experience a 90% fluctuation, equating to a 1.9kW variation for a 1kW load. Supercapacitors provide high-frequency, long-lifetime energy storage solutions, essential for system stability [7][9]. - **Investment Opportunities**: There are multiple investment opportunities in PSU, HVDC, and DC-DC segments. Companies like Megmeet and HVDC-related firms show strong certainty, while new players like Newray may achieve AC-DC conversion. Jianghai Co., Blok New Materials, and Sanhuan Group may also see new opportunities due to technological changes [12]. Additional Important Insights - **Technological Iteration**: The secondary power supply (ACDC) segment is expected to undergo technological iterations due to increased power density. The core components will change as integration levels rise and switching frequencies increase from 30kHz to 500kHz, presenting substantial investment opportunities [3]. - **Market Potential for Jianghai Co.**: Jianghai Co. has secured significant orders from major clients like Meta for supercapacitors, with each module priced around $5,000. The company is expected to capture a significant market share and gradually realize profits as downstream clients ramp up demand [10]. - **Impact of IFAX**: The anticipated increase in IFAX production in 2026 will lead to changes in the DC-DC segment, with a projected market space of 1.7 billion yuan for chip-level components. Companies like Boke, with integrated advantages, are expected to capture a large share of this market [11].

Summary of Conference Call Transcript Industry Overview - The report discusses the evolution of power supply architectures in data centers, focusing on High Voltage Direct Current (HVDC) systems and their adoption by major overseas companies such as Microsoft, Google, and Meta [1][10]. - The increasing demand for AI computing power is driving the need for more efficient power supply solutions in data centers, impacting both energy consumption and operational costs [1][10]. Key Points on Power Supply Architecture Evolution of Power Supply Systems 1. **First Generation**: Utilized Uninterruptible Power Supply (UPS) systems, converting AC from the grid to DC for server use, with a power capacity of 10-15 kW [2]. 2. **Second Generation**: Introduced an open pricing power supply model, integrating power sources directly into the system [2]. 3. **Third Generation**: Features a high-voltage direct current (HVDC) solution that separates power supply from IT cabinets, allowing for better scalability and efficiency [3][4]. Major Companies' Initiatives - **Microsoft**: Launched the Mount Diablo power architecture, separating power and server units, currently using a 50V DC supply [4]. - **Google**: Presented a two-phase power architecture at the OCP conference, with a transition plan to a direct DC supply of ±400V for data centers [5]. - **Meta**: Announced a three-step approach to high-power rack solutions, gradually moving towards HVDC systems [6][7]. - **NVIDIA**: Introduced an 800V power architecture capable of supporting over 600 kW, focusing on future-proofing against increasing power demands [9]. Domestic vs. Overseas Trends - Domestic HVDC systems in China are primarily at 240V, with a focus on compatibility with existing equipment, while overseas systems are moving towards 400V and 800V solutions [17][18]. - Chinese companies like Alibaba and Tencent are still utilizing 240V systems, with some planning for higher voltage systems in the future [19][20]. Supply Chain and Market Dynamics - The supply chain for 400V systems is mature, making it cost-effective, while 800V systems are newer and face higher costs and safety concerns [13][14]. - The transition to HVDC will be gradual, with existing systems needing to adapt to new power supply standards [10][22]. Investment Opportunities - Companies such as Zhongheng, Kehua, and others are positioned to benefit from the increasing penetration of HVDC systems in both domestic and international markets [22]. Additional Insights - The report highlights the importance of solid-state transformers (SST) in future power supply solutions, which can enhance efficiency and reduce size [15][16]. - The compatibility of existing servers with new power supply systems remains a critical factor in the transition to higher voltage solutions [22][23]. This summary encapsulates the key insights from the conference call, focusing on the evolution of power supply systems in data centers, the initiatives of major companies, and the implications for investment in the sector.