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芯片的大难题
半导体芯闻· 2025-06-19 10:32
Core Viewpoint - The semiconductor industry faces unprecedented challenges in power delivery and thermal management due to the increasing complexity and power demands of AI workloads, necessitating innovative design and manufacturing approaches [1][2][20]. Power Delivery Challenges - AI-specific chips are pushing transistor density to new limits, leading to significant power demands, with NVIDIA's Blackwell consuming between 700W to 1400W [1]. - Dynamic power consumption, primarily influenced by data movement between memory and computation units, dominates power usage, creating design constraints from memory hierarchy decisions to power delivery networks [1][2]. Thermal Management Issues - The transition to 3D stacking and localized heat generation complicates thermal dissipation, increasing challenges like electromigration and localized hotspots [2]. - Advanced packaging techniques are essential for effective thermal management, with materials like indium alloy TIM being effective due to their high thermal conductivity [8]. Vertical Power Delivery Innovations - The semiconductor industry is exploring vertical power delivery techniques to overcome limitations of traditional horizontal power delivery, which suffers from significant power loss and overheating [4]. - By embedding power rails directly beneath chips, vertical delivery reduces voltage drop and noise while freeing up space for critical signal transmission [4][5]. Material Innovations - Molybdenum is emerging as a key alternative to tungsten and copper for interconnects, offering lower contact resistance and better performance in densely packed chip designs [11][12]. - The shift to molybdenum aligns with industry efforts to mitigate electromigration risks associated with high current densities in AI workloads [12][13]. Backside Power Delivery Networks (BSPDN) - BSPDN represents a transformative shift in chip architecture, separating power and signal routing to enhance efficiency and layout flexibility [15][16]. - This approach allows for dual-side cooling strategies, although it introduces new challenges in terms of mechanical reliability and yield optimization [16]. System-Level Design Optimization - The integration of power delivery, thermal distribution, and mechanical stress modeling is becoming crucial for next-generation AI chips, requiring collaboration across design teams [18][19]. - Enhancing power delivery efficiency directly correlates with reduced heat generation and cooling costs, which is vital for large-scale data centers [20]. Conclusion - The future of AI chip power delivery will require deep interdisciplinary collaboration, with innovations like BSPDN, molybdenum interconnects, and vertical integration paving the way for improved performance and scalability [20].
苹果高管:AI将改变芯片设计
半导体芯闻· 2025-06-19 10:32
Core Viewpoint - Apple aims to leverage generative artificial intelligence to accelerate the design of its custom chips, as stated by its top hardware technology executive [1][2]. Group 1: Chip Design and Technology - Apple has learned the importance of using advanced tools for chip design, including the latest electronic design automation (EDA) software from leading companies like Cadence Design Systems and Synopsys [1][2]. - Generative AI technology has the potential to significantly enhance productivity by completing more design work in a shorter time frame [2]. Group 2: Strategic Decisions - The transition of Mac computers from Intel chips to Apple’s own silicon was a significant gamble for the company, undertaken without a backup plan, demonstrating a bold approach to innovation [2].
事关英伟达芯片,马来西亚发起调查
半导体芯闻· 2025-06-19 10:32
Core Viewpoint - The Malaysian government is verifying reports regarding a Chinese company using servers equipped with NVIDIA AI chips in Malaysia to train large language models, while ensuring compliance with domestic laws and international trade regulations [1][2]. Group 1: Government Actions and Regulations - The Ministry of Investment, Trade and Industry of Malaysia is currently checking whether the use of NVIDIA chips violates any local laws or regulations [1]. - The ministry stated that servers using NVIDIA or AI chips are not classified as controlled items under the 2010 Strategic Trade Act of Malaysia [1]. - Malaysia opposes any evasion of export controls or illegal trade activities and will continue to enforce international trade regulations [1]. Group 2: Context of AI Chip Usage - A Chinese AI company reportedly rented 300 servers equipped with advanced NVIDIA chips in a Malaysian data center to input data for training AI models, which were then brought back to China [2]. - Since 2022, the U.S. has increased restrictions on the export of advanced AI chips to China, citing national security concerns [2]. - The Biden administration had previously proposed limiting the sale of advanced chips to Southeast Asia and the Middle East to prevent Chinese companies from acquiring these chips through third parties [2].
SK海力士,再度领先
半导体芯闻· 2025-06-19 10:32
外媒报导,SK 海力士近期再次在高频宽记忆体(HBM)市场中取得领先地位,成为首家向英伟达 (NVIDIA) 供应下一代HBM4 模组的厂商。这些记忆体将用于英伟达的Rubin AI GPU 的样品测 试。这代表着SK 海力士在HBM 领域的持续主导地位,并在与美光和三星的竞争中脱颖而出。 Wccftech 报导表示,因为预计HBM4 在未来的AI 市场中扮演着至关重要的角色。其中,它的一 大创新在于首次将记忆体和逻辑元件整合到单一封装之中,这对于提升AI 工作执行的处理能力和 效率进一步提升。 SK 海力士不仅领先供应,更已公开展示其HBM4 技术的显著进展,包括全球 首创的16 层堆叠HBM4 技术、达成了高达2.0 TB/s 的频宽,这对于处理大量资料的AI 应用至关 重要。另外还整合了晶圆代工龙头台积电的逻辑芯片,可带来更高的性能和效率。 而除了16 层堆叠的HBM4 之外,SK 海力士也已开始提供全球首款12 层堆叠HBM4 样品,这些样 品也具备高达36 GB 的记忆体容量与2 TB/s 的资料传输速率,进一步巩固了其在HBM4 技术领域 的领先地位。 根据韩国媒体DealSite 的报导,SK ...
三星痛失芯片大客户?
半导体芯闻· 2025-06-19 10:32
Group 1 - Google's recent decision to shift its Tensor chip production from Samsung to TSMC represents a significant blow to Samsung's foundry business, prompting internal discussions on addressing fundamental issues within its semiconductor operations [1] - Samsung's foundry division is undergoing internal inspections following Google's transition, which is expected to last until the Pixel 14 series, indicating concerns over Samsung's mobile division's security [1] - The loss of major clients like Qualcomm and NVIDIA, alongside Google's departure, has led to a decline in Samsung's semiconductor market share from 8.1% to 7.7%, while TSMC's market share has risen to 67.6% [2] Group 2 - Despite investing billions over the past five years, Samsung's goal to surpass TSMC by 2030 appears increasingly unattainable, with TSMC continuing to gain market share [2] - Samsung is collaborating with Synopsys to improve yield rates and is diversifying its focus beyond AI and mobile chips to include automotive and robotics applications [2] - The success of Samsung's first 2nm chip, Exynos 2600, is critical for regaining lost clients, including NVIDIA and Qualcomm, provided it avoids overheating and performance issues [2]
高功率DC-DC应用设计新方案:DFN3.3x3.3源极朝下封装技术
半导体芯闻· 2025-06-18 10:09
Core Viewpoint - Alpha and Omega Semiconductor Limited (AOS) has launched the AONK40202 25V MOSFET, designed for high power density applications, particularly in AI servers and data center power systems, utilizing innovative Source Down packaging technology to enhance thermal and electrical performance [2][3]. Group 1: Product Features - The AONK40202 MOSFET features a DFN3.3x3.3 Source Down packaging, which simplifies PCB layout and optimizes heat dissipation and electrical performance [2][3]. - This MOSFET can handle a continuous current of up to 319A and operates at a maximum junction temperature of 175°C, significantly improving system-level performance and power density [2]. - Compared to traditional Drain Down packaging, the Source Down design reduces power loss and enhances thermal performance, providing engineers with key advantages in optimizing PCB space utilization [3]. Group 2: Company Overview - AOS specializes in the design, development, production, and global sales of power semiconductors, including Power MOSFETs, SiC, IGBTs, and power ICs [4]. - The company has accumulated extensive intellectual property and technical expertise, enabling it to launch innovative products that meet the complex power demands of advanced electronic devices [4]. - AOS's product portfolio targets high-demand applications such as portable computers, graphics cards, data centers, AI servers, smartphones, and various power supply needs across consumer and industrial sectors [4].
HBM,三星制定新目标
半导体芯闻· 2025-06-18 10:09
Core Viewpoint - Samsung Electronics is facing significant challenges in its semiconductor business, particularly in the memory and system semiconductor sectors, with the success of the next-generation HBM (High Bandwidth Memory) commercialization being crucial for its performance [2][4]. Group 1: Semiconductor Business Strategy - Samsung Electronics is planning its semiconductor business strategy for the second half of the year, with a global strategy meeting scheduled to address the performance of various business units and discuss strategies to cope with macroeconomic uncertainties [2]. - The meeting will focus on overcoming the current downturn in the semiconductor business, which is divided into three main pillars: DRAM and NAND memory semiconductors, foundry services, and system LSI [2]. Group 2: Memory Business Challenges - The success of Samsung's memory semiconductor business in the second half of the year largely depends on the commercialization of HBM, which is essential for AI data centers [4]. - Samsung failed to deliver HBM3E products to its major client NVIDIA last year, prompting a redesign of the DRAM used in HBM3E and a renewed effort to supply NVIDIA [4]. - The company aims to start mass production of the next-generation 1c DRAM and HBM4 by the end of the year, with expectations of obtaining production approval in the third quarter [4][5]. Group 3: Foundry Business and Market Position - Samsung's foundry division is struggling to attract major clients like Apple, NVIDIA, and Qualcomm in the 3nm and smaller process nodes, leading to a decline in market share from 8.1% to 7.7% in Q1 [6]. - TSMC continues to lead in the foundry market, with plans to enter mass production of 2nm technology, while Samsung is in discussions with potential clients for its own 2nm process [6][8]. - Samsung is investing $37 billion in a new foundry in Taylor, Texas, but faces pressure to expand domestic investments due to U.S. government policies [8][9]. Group 4: Investment and Operational Challenges - The construction of the new foundry in Texas is progressing, with the first factory nearly completed, but Samsung must navigate the complexities of U.S. investment regulations and market demand [8]. - The company is cautious about expanding capacity at the Taylor facility without ensuring long-term customer demand, which could lead to significant financial risks [9].
中国汽车芯片,国产化加速
半导体芯闻· 2025-06-18 10:09
Core Viewpoint - The article discusses China's push for automotive chip localization amid increasing US-China tech competition, aiming for 100% self-developed chips by 2027 [1][3]. Group 1: Government Initiatives and Industry Response - The Chinese government, through the Ministry of Industry and Information Technology (MIIT), is leading the initiative for automotive chip localization, with a target to increase the domestic chip usage rate from 25% in 2024 to 100% by 2027 [1]. - Major Chinese automotive brands, such as Geely and BYD, have expressed willingness to prioritize the use of domestic chips, reflecting a strong commitment to this initiative [1][2]. - Despite the lack of a mandatory requirement for 100% localization, the automotive industry is actively collaborating with domestic wafer manufacturers like SMIC to explore the feasibility of domestic alternatives [1][2]. Group 2: Challenges and Strategic Adjustments - The automotive chip localization faces significant challenges, particularly in the autonomous driving sector, where there is still heavy reliance on US suppliers like Nvidia and Qualcomm [1]. - Chinese automotive manufacturers are adopting flexible strategies by using consumer-grade chips for non-core functions, which reduces costs and shortens testing and certification times to 6-9 months, compared to several years for European manufacturers [2]. - Chinese chip companies, such as SemiDrive, are beginning to expand into international markets, indicating a new phase for Chinese chip manufacturers [2]. Group 3: Market Dynamics and Future Outlook - The global demand for automotive chips is surging, making automotive chip manufacturing a crucial strategic direction for China's semiconductor industry [3]. - The rapid expansion of China's mature process nodes is creating price pressure in markets for microcontrollers and analog chips, although the overall self-sufficiency rate in semiconductors remains low, with only 17.5% of domestic demand expected to be met by 2025 [2][3]. - The shift towards automotive chip localization is not only a part of national technology strategy but also signifies a fundamental change in the global automotive supply chain, potentially altering the competitive landscape in the automotive market [3].
EUV,不再重要?
半导体芯闻· 2025-06-18 10:09
如果您希望可以时常见面,欢迎标星收藏哦~ 来源:内容来自 technews 。 外媒报导,一位英特尔(Intel) 的主管预期,未来的晶体管设计将使高阶微影曝光设备在先进半 导体制造中的重要性有所降低。此一观点,最初发表在投资研究平台Tegus 上,并在X 平台上被分 享。 Wccftech 报导指出,目前阿斯麦(ASML) 的极紫外光(EUV) 微影曝光设备是现代高阶芯片 制造的关键核心,这使得台积电等领先半导体制造企业能够在硅晶圆上蚀刻出极其微小的电路图 案。在高阶半导体制程当中,藉由微影曝光设备将复杂的设计图案转移到晶圆上。之后,这些图案 随后透过沉积(deposition) 和蚀刻(etching) 等后续技术得以固化。沉积是将材料附着到晶圆 上,而蚀刻则是选择性地移除这些材料,最终形成芯片内部的晶体管和电路。过去,EUV 微影曝 光设备因其能够转移,或列印微小电路设计的能力,在制造7 纳米及更高阶技术的芯片中扮演了举 足轻重的角色。 然 而 , 该 英 特 尔 主 管 认 为 , 随 着 晶 体 管 设 计 的 持 续 演 进 , 特 别 是 导 入 了 环 绕 闸 极 场 效 晶 体 管 (GAA ...
存储双雄,豪赌4F² DRAM
半导体芯闻· 2025-06-18 10:09
Core Viewpoint - Samsung Electronics and SK Hynix are accelerating the development of the next generation of 3D DRAM, specifically the vertical structure "4F² DRAM," aiming to complete and test early prototypes by the end of this year [1][2]. Group 1: Development and Technology - The 4F² DRAM architecture differs significantly from traditional planar DRAM, utilizing a vertical stacking method to overcome miniaturization limitations, which is expected to enhance performance, data transfer rates, and energy efficiency [1]. - Both companies plan to validate the commercial viability of the 4F² DRAM prototype before fully launching into 3D DRAM development, while Micron Technology is reportedly skipping the 4F² DRAM stage to directly enter 3D DRAM development [2]. - The transition to vertical design is seen as essential due to the increasing challenges of miniaturizing planar DRAM, with the latest products being based on the 10nm process node [5]. Group 2: Market Impact and Future Projections - The anticipated performance improvement of 4F² DRAM is nearly 50% compared to existing models, with mass production expected within the next three years if development proceeds as planned [5]. - The architectural shift is expected to reshape manufacturing processes, materials, and equipment requirements, with both companies collaborating with global semiconductor equipment manufacturers to develop advanced processes for 4F² DRAM production [6]. - The transition to vertical DRAM architecture is viewed as the only viable path forward, despite the significant challenges posed by the scale of structural changes in development and manufacturing processes [6].