Feasibility study of using GaN FET for miniaturized notebook computer power adapters

现有的笔记本电脑电源适配器与电脑本身相比体积庞大且笨重。大小 可以通过增加开关频率来降低电源适配器的功耗。不幸的是， 不能使用现有的基于硅的功率晶体管，例如MOSFET来实现。 近年来，已经开发了基于氮化镓（GaN）的功率晶体管。与硅相比 基于功率晶体管的GaN器件在品质因数（FoM）标准方面将好3000倍。他们 在相同的传导损耗下，可以实现10倍以上的开关频率。GaN器件是 必将彻底改变电力电子行业。预计它们将取代几乎所有的 硅基功率晶体管在20到30年内。 Crosslight Software成立于1995年，现已成为仿真、建模和分析领域的全球领导者 基于硅和GaN的功率晶体管。本计画将探讨利用氮化镓电源之可行性 高功率密度65W笔记本电脑电源适配器的器件，可充分利用 GaN器件在本研究计画中，我们将详细研究氮化镓元件的特性，并制作一个LLC共振元件。 转换器将使用GaN功率晶体管设计。这将证明一个非常紧凑的 轻巧的笔记本电源适配器。 预计随着该项目的完成，Crosslight将能够制造和销售 微型电源适配器，这将使该公司扩大其销售和利润，以及增加 在其温哥华设计中心的工程师人数。

Existing notebook computer power adapters are bulky and heavy compared with the computer itself. The size of the power adapter can be reduced by increasing the switching frequency. Unfortunately, this objective cannot be achieved using the existing power transistors based on silicon, such as MOSFET. Gallium Nitride (GaN) based power transistors have been developed in recent years. Compared with Silicon based power transistors, GaN devices will be 3000 times better in terms of Figure of Merit (FoM) criteria. They can achieve more than 10 times higher switching frequency at the same conduction loss. GaN devices are bound to revolutionize the power electronics industry. It is expected that they will replace almost all of the silicon-based power transistors in 20 to 30 years. Crosslight Software was founded in 1995 and has become a world leader in simulation, modeling and analysis of Silicon and GaN based power transistors. This project will investigate the feasibility of using GaN power devices for a high power density 65W notebook computer power adapter that can fully utilize the potential of GaN devices. In this research project, the features of GaN devices will be studied in detail and an LLC resonant converter will be designed using GaN power transistors. This will demonstrate the feasibility of a very compact and lightweight notebook power adapter. It is expected that with the completion of this project, Crosslight will be able to manufacture and sell the miniature power adaptor, which will allow this company to expand its sales and profits, as well as increase the number of engineers in its Vancouver design center.