EPC技术文章

Practical Layout Techniques to Fully Extract the Benefits of eGaN FETs

The trend for electronics is to continually push towards miniaturization while increasing performance. With silicon MOSFET technology fast approaching its theoretical limit, enhancement mode gallium nitride (eGaN®) FETs from EPC have emerged to offer a step change improvement in power FET switching performance, enabling next generation power density possibilities by decreasing size and boosting efficiency. This article will explore the recommended layout techniques required to fully extract the benefits of EPC’s eGaN FETs.

By: Ivan Chan & David Reusch, Ph.D.
EEWeb –Modern Printed Circuits
August, 2015
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专为符合A4WP Rezence标准的无线电源传送应用而设的EPC eGaN功率集成电路在效率及成本方面树立全新基准

全新EPC2107EPC2108 eGaN®功率集成电路包含单片半桥式器件及集成式自举功能,专为符合无线充电联盟(A4WP)第二及第三级规范的解决方案而设。此外,为了让客户容易对氮化镓元件进行评估,我们也提供开发板及包含发射器及接收器的无线电源传送解决方案。

宜普电源转换公司(EPC)宣布推出内含集成式自举功能的场效应晶体管的eGaN半桥功率集成电路 EPC2107(100 V)及EPC2108(60 V)。该集成电路去除了由栅极驱动器所引致的反向恢复损耗,也不需高侧箝位。这是首次在eGaN功率电路中集成了一个自举场效应晶体管。

如何测量世界上速度最快的电源开关

氮化镓(GaN)场效应晶体管随时准备在电压调节器及直流-直流电源应用替代硅功率器件。 与硅MOSFET器件相比,氮化镓晶体管的开关速度快很多及具有更低的导通电阻(RDS(on)),从而可以实现具有更高功效的功率电源,对我们来说是好的。如果你正在使用氮化镓器件设计功率电路,你必需理解器件的开关速度。

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Development Boards Make Evaluating eGaN FETs Simple

Long talked about, wide bandgap gallium nitride-on-silicon (GaN-on-Si) transistors are now commercially available. They are being touted for replacing silicon-based MOSFETs, which are turning out to be inefficient for many high-performance power supply designs. Recently, several suppliers of GaN-on-Si-based HEMTs and FETs have emerged in the marketplace, among them Efficient Power Conversion (EPC). To expedite the evaluation of eGAN FETs for power supply designs transitioning from silicon MOSFETs to eGaN FETs, EPC has released several development boards in the last few years.

By Ashok Bindra
Digi-Key Article Library
July 15, 2014
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在采用D类及E 类放大器的无线电源传送系统应用对增强型氮化镓晶体管的性能进行评估

在过去几年间,无线电源传送应用逐渐流行,尤其是替便携式装置充电的应用。宜普公司在本章讨论使用松散耦合线圈、高度谐振的无线电源解决方案,符合A4WP标准并适合工作在免执照、給工業、科學及醫療用电器设备(ISM)使用的6.78 MHz或13.56 MHz頻率。

杂志:Bodo’s Power Systems
作者:Alex Lidow博士及Michael De Rooij博士
2014年5月

How To GaN: Paralleling High Speed eGaN FETS for High Current Applications

This column evaluated the ability to parallel eGaN® FETs for higher output current applications by addressing the challenges facing paralleling high speed, low parasitic devices, and demonstrated an improved paralleling technique. For experimental verification of this design method, four parallel half bridges in an optimized layout were operated as a 48 V to 12 V, 480 W, 300 kHz, 40 A buck converter, and achieved efficiencies above 96.5%, from 35% to 100% load. The design method achieved superior electrical and thermal performance compared to conventional paralleling methods and demonstrated that high speed GaN devices can be effectively paralleled for higher current operation.

EEWeb
By: Alex Lidow
April, 2014

于无刷式直流伺服马达,采用硅器件与采用氮化镓场效应晶体管的功率逆变器的比较

由于德国航空太空中心的机械人及机械电子研究院(Robotics and Mechatronics Institute )对改善传感器及功率电子的兴趣很大,我们利用开发全新机械人的机会来评估宜普电源转换公司(EPC)的全新增强型氮化镓场效应晶体管技术并与我们目前最优秀的逆变器设计进行比较。

杂志 :Bodo’s Power Systems
作者:德国航空太空中心 (DLR) Robin Gruber
日期:2014年3月

How To GaN: eGaN® FETS in High Performance Class-D Audio Amplifiers

The quality of sound reproduced by an audio amplifier, measured by critical performance parameters such as THD (Total Harmonic Distortion), damping factor (DF), and T-IMD (Inter-modulation Distortion), is influenced by the characteristics of the switching transistors used. Class-D audio amplifiers typically use power MOSFETs, however, lower conduction losses, faster switching speed, and zero reverse recovery losses provided by enhancement-mode GaN (eGaN) FETs enable a significant increase in the sonic quality, and higher efficiency that can eliminate heatsinks. The result is a system with better sound quality in a smaller form factor that can be built at a lower cost.

EEWeb
By: Alex Lidow
February, 2014

如何使用氮化镓器件:在高频无线电源传送应用使用氮化镓场效应晶体管(eGaN FET)

本章展示氮化镓场效应晶体管如何推动具高度谐振、松散耦合性、工作在6.78 MHz ISM频带的无线电源传送技术,实现高效无线能源传送,并与工程师分享使用电压模式D类及E类方法的范例。

EEWeb
作者:Alex Lidow
日期:2014年1月

如何使用氮化镓:支持高频开关的氮化镓场效应晶体管(eGaN® FET)

本章我们回到讨论硬开关转换器,但不同的是晶体管在更高频率的条件下工作,超越硅技术的实际限制。

EEWeb
作者: Alex Lidow
2013年12月

高频功率转换器件的封装的考虑因素

在开关频率10 MHz或以上,电源转换需要具备高速开关的晶体管并配备在高频工作的封装。相比日渐老龄化的功率MOSFET器件,由于氮化镓场效应晶体管(eGaN® FET)提供无可匹敌的器件性能及封装,因此可以在高频时提高电源转换效率。

Bodo’s Power Systems
客席编辑: Alex Lidow
2013年11月

氮化镓器件在各个应用领域逐一击败硅器件

增强型氮化镓场效应晶体管商用化已经超过四年,并不断渗透及进驻本来被硅功率MOSFET器件所垄断的应用领域。

Power Pulse
作者:Alex Lidow
2013年10月

EPC8000 Family Highlighted as “Green Product of the Month” in Bodo’s Power Systems

With the introduction of this family of eGaN® FETs, power systems and RF designers now have access to high performance gallium nitride power transistors enabling innovative designs not achievable with silicon.

October, 2013
Bodo's Power Systems

如何使用氮化镓:在硬开关中间总线转换器使用氮化镓场效应晶体管(eGaN FET)

我们在本章讨论在隔离型直流-直流功率转换中使用更复杂的硬开关转换器。

EEWeb
作者:Alex Lidow
2013年10月

如何使用氮化镓器件:在高频降压转换器使用氮化镓场效应晶体管

在高频降压转换器配备最优的版图,使得在1MHz 频率下开关时器件可实现96%以上的效率。

EEWeb
日期:2013年9月
作者:Alex Lidow

eGaN FET-Silicon Power Shoot-Out: A Retrospective of Sixteen Articles

When a new technology is introduced, it is not reasonable to think that engineers will intuitively know how to effectively and efficiently take advantage of the performance enhancements that the new technology offers – there is always a learning curve. This is being borne out in the case of the rapidly emerging technology of high performance gallium nitride transistors.

GaN FET technology was made available to the general power conversion engineering community in mid-2010 when Efficient Power Conversion (EPC) introduced the industry’s first commercially available GaN transistor. Since that time, EPC has continued on two parallel paths – one to expand their portfolio of products and the other to share what it learns about the use of the technology with power conversion systems design engineers. One of these educational efforts has been to work with the editors of Power Electronics magazine and publish a bi-monthly series of articles on the characteristics of GaN technology and its applications.

This series is entitled eGaN FET -- Power Silicon Shoot Out. Articles in the series took on both basic issues and specific applications using gallium nitride components. It is timely to make a quick review of the sixteen articles to make certain that we have accomplished the goal of assisting engineers in climbing the learning curve. This retrospective look will give us insight into what further topics and studies are needed to advance the adoption of GaN technology, the need to learn is never finished.

By: JOHAN STRYDOM, Ph. D., Vice President, Applications, Efficient Power Conversion Corporation
MICHAEL DE ROOIJ, Ph.D., Executive Director of Applications Engineering, Efficient Power Conversion Corporation
DAVID REUSCH, PH.D., Director, Applications, Efficient Power Conversion Corporation

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无封装高电子迁移率晶体管可实现高效功率转换

封装的缺点是增加功率MOSFET器件的尺寸及成本,并增加阻抗和电感,从而降低器件的性能。宜普电源转换公司Alex Lidow辩说最有效的解决方案是不用封装,使 氮化镓高电子迁移率晶体管与等效硅器件相比,具有相同成本的优势。

杂志:Compound Semiconductor
日期:2013年6月

如何使用GaN(氮化镓): 氮化镓晶体管技术专论

领导增强型氮化镓晶体管发展的宜普电源转换公司的首席执行官Alex Lidow首次在EEWeb.com撰写全新专栏,每月与设计工程师讨论硅基氮化镓功率器件可以 替代旧有功率MOSFET器件。

EEWeb.com
作者:Alex Lidow
日期:2013年6月

氮化镓场效应晶体管与硅功率器件比拼第14章第1部分:氮化镓场效应晶体管的小信号射频性能

虽然氮化镓场效应晶体管被设计及优化为一种开关功率器件,但该晶体管也具备良好的射频特性。 本章是关于氮化镓场效应晶体管在200 MHz至2.5 GHz频率范围的射频特性的第1部分。

作者:宜普公司应用工程行政总监Michael de Rooij博士、产品应用副总裁Johan Strydom博士及Peak Gain Wireless总裁Matthew Meiller

阅读文章

Exploring gallium nitride technology

杂志:EE Times Asia
日期:2013年5月16日

作为替代MOSFET器件的氮化镓(GaN)功率器件在商用直流-直流电源转换的应用已发展了三年,随着氮化镓器件暂露头角,加上以前使用MOSFET的场效应晶体管而不能实现的应用也可以使用氮化镓器件来实现,对于氮化镓功率器件的开发者来说,以前想不到及还没有开发的全新应用将提供大有可为的发展机遇。

http://www.eetasia.com/ART_8800684828_480200_TA_f13f883a.HTM

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