March 11, 2026
The invention patent “A Control Method for a Three-Level Converter and Related Components” applied for by the ZJU-PMIC team was granted authorization by the China National Intellectual Property Administration on March 3, 2026, demonstrating the ZJU-PMIC team’s independent innovation capability in the field of power electronics technology. This patent mainly addresses the control challenges of three-level converters and proposes a self-voltage-balancing topology based on flying-capacitor three-level (FC-3L) technology and its control method. This scheme cleverly introduces a set of auxiliary clamping diodes on the basis of the traditional FC-3L circuit. By adjusting the duty cycle of the switches, the flying capacitor voltage is dynamically clamped to the midpoint of the bus voltage, thereby achieving excellent natural voltage balancing under open-loop conditions. Clamping mechanism under asynchronous duty cycle control As the most commonly used multilevel converter today, the three-level converter offers low voltage stress on switching devices and small output voltage […]
February 4, 2026
On January 23, at the PMIC Yuquan Laboratory, the Power Management Innovation Consortium and its member company **Silicon Power Semiconductor** held a special exchange meeting. At the beginning of the meeting, PMIC and the Silicon Power team exchanged views on the technological development paths and industry application prospects of wide-bandgap semiconductors (SiC/GaN). Subsequently, Silicon Power introduced its current key areas of focus, and the PMIC team conducted technical feasibility analysis and discussion. In the special seminar session, PMIC focused on application cases based on gallium nitride (GaN) power devices and systematically introduced their design and practice in various high-efficiency converters. Specifically, the two sides analyzed the freewheeling switch voltage oscillation and crosstalk issues in hard-switching half-bridge structures, from mechanism to solutions. Then, taking the 48V-12V Buck converter as an example, they elaborated on its design method for achieving optimal efficiency and its requirements for driving. PMIC also shared research progress […]
February 1, 2026
The Power Management Innovation Consortium (PMIC) faculty and student team visited member units Chipown Microelectronics Co., Ltd. and Maitian Energy Co., Ltd. on January 28 for technical exchanges and on-site visits. At Chipown Microelectronics, the two sides held a technical exchange meeting. The meeting focused on in-depth discussions around the common difficulties of current high-power-density power supplies. How can the high-frequency, high-efficiency advantages of wide-bandgap semiconductors be fully leveraged? This is a core issue of common concern to PMIC and its member units. In response, PMIC presented key research projects and discussed technical solutions for high-frequency wide-bandgap semiconductor applications. During the visit, Chipown Microelectronics highlighted its latest R&D achievement to PMIC representatives—the “full-range soft-switching megahertz FSBB+DCX controller.” As an industry-leading solution, this product brings enormous advantages in volume and efficiency for applications such as satellite power supplies, energy storage power supplies, and industrial module power supplies. At Maitian Energy, the […]
January 30, 2026
Project Overview As the current-carrying density (>500 A/cm²) and heat flux density (more than three times that of silicon-based devices) of SiC MOSFETs significantly surpass those of silicon-based IGBTs and continue to increase, the limitations of traditional bond-wire interconnections in current-carrying capability and heat dissipation performance have become increasingly prominent, becoming a key bottleneck constraining the performance and reliability of high-power SiC modules. To overcome this limitation, this project proposes an all-copper sintered Cu-Clip integrated packaging method, aiming to fundamentally improve the electrical interconnection current-carrying capability, thermal management efficiency, and long-term operational reliability of high-power SiC modules. Technical Achievements and Innovation Highlights This project is the first to propose a packaging integration method for high-power SiC modules based on an all-copper sintered Cu-Clip interconnection architecture. The core innovations and process implementations are as follows: (1) System-level-to-chip-level all-low-temperature copper sintering interconnection. This method achieves low-temperature copper sintering between the heat sink […]
December 23, 2025
On December 19, 2025, the 2025 Winter Technical Symposium hosted by the Power Management Innovation Consortium (PMIC) of the Hangzhou International Science and Technology Innovation Center, Zhejiang University, was successfully held in Hangzhou. This meeting aimed to showcase PMIC’s project progress, share frontier achievements in the field of power management, and promote deep integration and collaborative innovation among industry, academia, research, and application. The meeting was co-chaired by Professor Zhang Junming, Professor Wu Xinke, and Associate Professor Shao Shuai of Zhejiang University. Experts, technical representatives, and graduate students from more than 30 member companies, universities, and research institutes attended the symposium. The meeting had a rich agenda, focusing on industry hotspots and key technical challenges, with a total of 1 PMIC development report, 1 specially invited thematic report, 6 PMIC project reports, 2 ecosystem technology reports, and poster and prototype display and exchange sessions. Professor Yang Shu of the University […]
December 8, 2025
乙巳年 丁亥月 乙未日，ZJU-PMIC师生一行于人间天堂杭州到达东方之珠香港。那天天气晴朗，海风和畅。一幅幅智慧的画卷便徐徐展开…… 香港科技大学 丁亥月 丙申日 清水湾 ZJU-PMIC的10MHz小分队与港科大学生于火烈鸟标志点集合后，便展开了热烈的学术交流讨论。 会议上，浙江大学的姜旭同学和香港科技大学的吴雨薇同学先讲解了器件测试的工作，吴新科教授和陈敬教授对其中的内容进行提问。王平老师和颜兆田博士对讨论内容进行补充。徐瀚诚同学讲解了10MHz项目中谐振驱动的工作；傅超伟同学讲解了10MHz项目中功率电路的设计和实验结果；王平老师和颜兆田博士对讨论内容进行补充。 港科大给我的直观感觉是：校园设计极为精巧，充满匠心。比如刚进校园，率先映入眼帘的是一个圆形拱门，它急剧收缩了我们的视野。而当你继续走进去，便是一片“海阔凭鱼跃，天高任鸟飞”的壮阔景面。不禁让我们联想到那句“江山如此多娇”的感叹。同时也激发了我们的斗志，因为“数风流人物，还看今朝！ 香港城市大学 丁亥月 丁酉日 九龙塘 在和香港城市大学的任昇博士汇合后，我们先参观了江朝强老师的实验室，并于实验室其他同学进行学术交流。其中，江老师实验室整洁有序，我们特地询问了实验室管理经验。他们说实验台和设备都比较紧张，因此他们设置了一个小程序专门用来预约实验台和设备。同时实验室要求每一个学生在做完实验后整理实验台，保证下一位同学使用时是干净整洁的。 下午4点，我们参观了香港城市大学的吴佳阳老师实验室。吴佳阳老师实验室主要研究课题是无线充电，超伟同学颇有经验，与吴佳阳老师课题组的学生进行热烈讨论。 香港城市大学纵横交错，宛若一座立体的学术迷宫。从一间实验到另一间实验室，往往需要乘电梯上下几层，绕行半座大楼，再穿过宽阔的公共中庭。这种穿梭本身就像一种思维的过渡——或许在科研途中，当学者们毫无头绪或思绪繁杂时，正是在这般纵横迂回的空间里漫步、转折、偶遇，灵感才悄然寻径而来。 香港大学 丁亥月 戊戌日 薄扶林 伴着清晨的第一缕阳光，我们来到了百年学府——香港大学。杨鑫博士带着我们参观了他们的实验室。干净的桌台，百万级别的设备帮助研究学者们探索更微观的世界，了解电力电子的物理本质。 在接下来的科研讨论中，姜旭同学研究的内容和张老师实验室颇为相似。但是在某些具体的现象上，观察的结果却不同。这激起了大家的兴趣并一起查文献调查。 自由，似乎是一种浸润在港大校园每个角落里的气息。这里的学术自由，不仅在于思想的开放，更体现在师生间频繁而深刻的互动——讨论常在课堂外延续，灵感在对话中自然生长。这里的活动自由，让兴趣成为纽带：既有社团的静思，也有商学院组织的热烈交流，不同圈子紧密相连，又各自蓬勃。这里的平台自由，真正支持着每一个学生向外探索世界，也拥抱世界向这里走来。在这片天地里，自由不是口号，而是呼吸的方式，是成长的力量。 交流是为了更好的学习。这次香港研学之旅打开了我们的视野。外面的科研是什么样子的？我想每一个交流的学生心里都有了答案。我们之后该怎么样做？这是我们需要思考的问题，切记防止邯郸学步。
November 28, 2025
Against the backdrop of high data center loads, improving the power density of server power supplies has become an industry consensus. At present, server power supplies mainly adopt a two-stage architecture: a front-end PFC and a rear-end DCDC. For the front-end PFC, multilevel converters can significantly improve power density while ensuring high efficiency. However, one of the application pain points of flying-capacitor multilevel converters is the voltage balancing problem of the flying capacitors, especially the dynamic voltage balancing problem. Based on a four-level flying-capacitor totem-pole PFC topology, the Zhejiang University PMIC team proposed a modulation strategy that dynamically maintains flying-capacitor voltage balancing, supporting next-generation server power supply systems. Voltage Balancing Challenges of Flying-Capacitor Multilevel Topologies Although multilevel topologies can effectively reduce the voltage stress of switching devices and increase the equivalent switching frequency, the voltage balancing problem of flying capacitors has always been key to constraining their performance and reliability. […]
November 19, 2025
From November 7 to 10, 2025, the 4th China Power Electronics and Energy Conversion Congress and the 28th Annual Meeting of the China Power Supply Society (CPEEC & CPSSC 2025) and the IEEE International Power Electronics and Application Symposium (PEAS 2025) were grandly held in Shenzhen. The Power Management Innovation Consortium of the Hangzhou International Science and Technology Innovation Center, Zhejiang University (ZJU-PMIC), appeared with its latest papers and achievements, attracting the attention of many academic peers and industry experts. At the IEEE PEAS 2025 international top-tier academic conference, the ZJU-PMIC team performed excellently in paper quality and academic presentation, with frequent good news: 8 papers were accepted by the conference, Xu Yuhao won the Best Paper Award, and Wang Yuchen, Xu Yuhao, and Bao Linyi won the Best Presenter Awards. This series of honors reflects the team’s solid research foundation and outstanding international academic exchange capabilities. Debut Achievements Make […]
September 25, 2025
On September 24–25, 2025, the Power Management Innovation Consortium appeared at the Shanghai New International Expo Centre, participating in PCIM Asia, the Shanghai International Exhibition for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. PMIC not only showcased multiple hardcore frontier technological achievements in a concentrated manner, but also achieved fruitful results in academic and industrial exchanges, becoming a striking highlight of the exhibition. At this exhibition, PMIC focused on displaying multiple innovative technologies and demonstration prototypes, including all-copper sintered SiC modules, multilevel PFC, and high-frequency high-efficiency high-density DC-DC, which together formed an innovation map spanning device packaging, topology, and system applications, comprehensively reflecting PMIC’s deep accumulation and collaborative innovation capabilities in frontier technology fields and attracting a large number of professional visitors to stop and exchange ideas. During the exhibition, the PMIC booth welcomed many industry partners, including leading companies such as Infineon, Bosch, and EPC, as well […]
