5月22日午间涨停分析 智通财经5月22日电，今日午盘全市场共36股涨停，连板股总数12只，19股封板未遂，封板率为65%（不含ST股、退市股）。焦点股方面，创新药概念股三 生国健走出20CM4连板，并购重组的综艺股份7天6板；高位股退潮，华纺股份、宁波海运等跌超9%，中毅达、南京港等跌超8%。 | 股票名称 | 板数 | 涨跌幅 | 涨停时间 | 上涨逻辑 | | --- | --- | --- | --- | --- | | 海特高新 | 首板 | 10.01% | 09:58 | 年工+氮 | | 002023 | | | | 塚 | | 四创电子 | 首板 | 10.02% | 10:06 | 年工+低 | | 600990 | | | | 经济 | | 烽火电子 | 首板 | 9.99% | 10:07 | 年工+低 | | 000561 | | | | 经济 | | 国睿科技 | 首板 | 10.00% | 10:08 | 军工 | | 600562 | | | | | | 国科天成 | 首板 | 20.00% | 10:25 | 军工 | | 301571 | | | | | | 银河电子 | ...

5月22日，数据中心、电源、氮化镓等多个相关板块集体大涨。中恒电气、万控智造、中超控股、海特高新等纷纷涨停，希荻微、开勒股份、派瑞股份、欣 锐科技、麦格米特、欧陆通、动力源等集体走强。 一、行情 | 股票名称 | 最新价 ◆ | 涨跌幅 ◆ | 涨停时间 ◆ | | --- | --- | --- | --- | | 中恒电气 | 17.28 | +9.99% | 09:30:12 | | 002364.SZ | | | | | 万控智造 603070.SS | 14.56 | +9.97% | 09:46:23 | | 开勒股份 | 68.10 | +10.97% | | | 301070.SZ | | | | 二、事件：两家拥抱英伟达的美股公司双双大涨+数据中心基础设施领域迎来重大技术飞跃 1）当地时间5月21日，纳微半导体公司宣布与英伟达合作开发下一代800V高压直流(HVDC)架构，为包括RubinUltra在内的GPU提供支持的"Kyber"机架级系 统供电，纳微的技术将一定程度上大幅提升能效并降低铜材使用量。纳微的氮化镓和碳化硅技术将在这一合作中发挥关键作用。 美股盘后，纳微股价一度暴涨200%。 ...

Core Viewpoint - Navitas Semiconductor's GaN and SiC technologies have been selected to support NVIDIA's next-generation 800 V HVDC data center power infrastructure, which is designed to enhance power delivery for AI workloads and support 1 MW IT racks and beyond [1][15]. Group 1: Technology Collaboration - The collaboration between Navitas and NVIDIA focuses on the 800 V HVDC architecture, which aims to provide high-efficiency and scalable power delivery for AI workloads, improving reliability and reducing infrastructure complexity [2][4]. - Navitas' GaNFast™ and GeneSiC™ technologies will enable the powering of NVIDIA's GPUs, such as the Rubin Ultra, directly from the 800 V HVDC system [1][6]. Group 2: Advantages of 800 V HVDC - The existing data center architecture, which uses traditional 54 V in-rack power distribution, is limited to a few hundred kilowatts and faces physical limitations as power demand increases [3]. - The 800 V HVDC system allows for a reduction in copper wire thickness by up to 45%, significantly decreasing the amount of copper needed to power a 1 MW rack, which is crucial for meeting the gigawatt power demands of modern AI data centers [5][6]. - This architecture eliminates the need for additional AC-DC converters, directly powering IT racks and enhancing overall system efficiency [6][13]. Group 3: Performance and Efficiency - NVIDIA's 800 V HVDC architecture is expected to improve end-to-end power efficiency by up to 5%, reduce maintenance costs by 70% due to fewer power supply unit (PSU) failures, and lower cooling costs by connecting HVDC directly to IT and compute racks [13]. - Navitas has introduced several high-efficiency power supply units (PSUs), including a 12 kW PSU that meets 98% efficiency, showcasing the company's commitment to innovation in power delivery for AI data centers [12]. Group 4: Company Background - Navitas Semiconductor, founded in 2014, specializes in next-generation power semiconductors, focusing on GaN and SiC technologies for various markets, including AI data centers and electric vehicles [17]. - The company holds over 300 patents and is recognized for its commitment to sustainability, being the first semiconductor company to achieve CarbonNeutral® certification [17].

点击注册小程序 查看完整报告 特别申明： 本订阅号中所涉及的证券研究信息由光大证券研究所编写，仅面向光大证券专业投资者客户，用作新媒体形势下研究 信息和研究观点的沟通交流。非光大证券专业投资者客户，请勿订阅、接收或使用本订阅号中的任何信息。本订阅号 难以设置访问权限，若给您造成不便，敬请谅解。光大证券研究所不会因关注、收到或阅读本订阅号推送内容而视相 关人员为光大证券的客户。 HVDC产业趋势进一步得到验证，未来渗透率有望持续提升 HVDC未来有望逐步替代UPS，主要有以下几点原因：1）AI技术发展推动服务器机架功率持续提升，随着机 架功率超过300kW，HVDC技术通过减少铜材使用量、降低电流以及减少热损耗，能够实现更高效、集中化的 电力输送；2）HVDC相较于交流UPS省去了逆变环节，有利于降低电能损耗、提高可靠性；3）HVDC系统在 占地面积、建设成本、运营成本上均优于UPS。我们认为，随着AI迅猛发展和算力需求急剧增加，AI数据中心 供配电系统面临着效率和节地等指标进一步提升的迫切需求，以上因素将持续推动数据中心供电技术方案由 UPS向HVDC发展，未来HVDC在AI数据中心的渗透率有望持续提升。 风 ...