论文导读｜Application of GaN Devices for 1 kW Server Power Supply……
Published in
Volume: 1, Issue: 1, 2016
Application of GaN Devices for 1 kW Server Power Supply with Integrated Magnetics
In today's power electronics products, quality and reliability are given. Great emphases are placed on high efficiency, high power density and low cost. With recent advances made in gallium nitride power devices (GaNs), it is expected that GaNs will make significant impacts to all three areas mentioned above. Thanks to the absence of reverse recovery charge and smaller junction capacitances, the turn-on loss of GaN is significantly reduced and Turn-off loss and driving loss are negligible, for the first time. These desired properties coupled with ZVS techniques will drastically reduce all switching related losses, thus enabling GaN to operate at a switching frequency more than ten times higher than its silicon counterparts. To illustrate the impact of GaN on efficiency, density and even design practice, a 1 kW server power supply is demonstrated which employs an interleaved CRM totem-pole PFC followed with an LLC resonant converter. Both operate beyond 1 MHz. All magnetic components are integrated into PCB with much reduced EMI noises, thus, only a simple one-stage EMI filter is required. The system achieves a power density more than 150 W/in3, an efficiency above 96%, and much improved manufacturability with minimum labor content.
Fred C. Lee
Center for Power Electronics Systems, Virginia Polytechnic Institute and State University
Qiang Li
Center for Power Electronics Systems, Virginia Polytechnic Institute and State University
Zhengyang Liu
Center for Power Electronics Systems, Virginia Polytechnic Institute and State University
Yuchen Yang
Center for Power Electronics Systems, Virginia Polytechnic Institute and State University
Chao Fei
Center for Power Electronics Systems, Virginia Polytechnic Institute and State University
Mingkai Mu
Center for Power Electronics Systems, Virginia Polytechnic Institute and State University
GaN device, soft switching, MHz, totem-pole PFC, LLC converter, coupled inductor, balance technique, matrix transformer, shielding
About CPSS TPEA
CPSS Transactions on Power Electronics and Applications (CPSS TPEA) is sponsored and published by China Power Supply Society and technically co-sponsored by IEEE Power Electronics Society. It publishes original and high quality peer reviewed papers in the field of power electronics and its applications. With the goal of promoting the technology of power electronics including concepts, theory, modeling and control, analysis and simulation, emerging technology and applications, CPSS TPEA is expected to be a favorable platform to strengthen information exchange in this area. Interested authors are welcome to submit your papers via the Manuscript Central (https://mc03.manuscriptcentral.com/tpea-cpss) online submission system. You can find more information on our website:
http://tpea.cpss.org.cn.
Why publish in CPSS TPEA
High level Editorial board will ensure the Transaction publishes only best and most insightful research.
Worldwide readership included by IEEE Xplore Digital Library (Open Access), EI Compendex and powerfully promoted by CPSS and IEEE PELS, allows your research to be easily accessed.
Open access fund set up by CPSS, help you disseminate your research to a widerly audience freely.
Prompt and rigorous peer review within 45 days from the date of manuscript submission, provides you with a quick decision about publication.
Easy online submission and tracking via Scholar One Manuscripts Center you can get the latest progress of your paper.
Special Issue on Robust and Reliable Power Electronics
Deadline for Submission of Manuscripts: May 15
Guest Editor-in-Chief
Frede Blaabjerg, Aalborg University, Denmark
Guest Co-Editor-in-Chief
Ke Ma, Shanghai Jiao Tong University, China
Special Issue on Vehicle Electrification
Deadline for Submission of Manuscripts: August 1
Guest Editor-in-Chief
Chris Mi, San Diego State University, USA
Guest Co-Editor-in-Chief
HJ Chiu, National Taiwan University of Science and Technology, Taiwan, China