矽功率MOSFET未能跟上電力電子行業的發展變化，而效率、功率密度和更小的外型尺寸等因素是行業的主要需求。 矽MOSFET元件的性能已達到其理論極限，並且由於電路板的空間非常寶貴，因此功率系統設計人員必需找出替代方案。 氮化鎵（GaN）元件是一種高電子遷移率電晶體（HEMT），這種半導體正為新興應用不斷增值。

EETimes
2020年8月
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當矽技術已經到了性能極限，採用氮化鎵元件的全新設計使得氮化鎵技術得以繼續普及。氮化鎵元件的發展還是剛剛起步，它的性能將得以繼續提升、積體電路也將會更具優勢，以及將有更多全新的氮化鎵產品推出市場。

Electronics Weekly
2019年12月
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宜普電源轉換公司首席執行長Alex Lidow 在是次硏討會討論氮化鎵技術如何大大改善系統的效率、尺寸及成本，從而加快磁共振及AirFuel共振技術的普及。

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This year’s PCIM Europe was attended by a record number of visitors, over 12,000. Over half (54%) were from outside Germany. They came to see over 500 exhibitors and while the subject matter was diverse and wide-ranging, there were some themes that emerged. GaN and SiC jostled for attention at this year’s PCIM Europe. Showing the potential that GaN has already realised, Efficient Power Conversion (EPC) had a stand that was well-stocked with examples of the eGaN FET technology that the company introduced in 2009.

Electronic Specifier
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The Trilogy of Wireless Power Transfer consists of three parts: Basics Principles of Wireless Power Transmission, Wireless Power Transfer Systems and Applications. The first part of the book explains the basic physical principles and the different methods of contactless power transmission. Furthermore, the leading standards are presented in this part. The second part describes wireless power transfer systems, the different topologies of wireless power transmission, the right selection of transmitter and receiver coils required to increase efficiency, and the selection of transistors, for instance. The third part is dedicated to practical applications. This includes applications within the scope of the Qi standard, as well as examples of proprietary solutions. An overview of EMI-relevant topics for closely and loosely coupled systems, as well as an example of a multimode wireless power transmission system round out the practical part. The authors of the "Trilogy of Wireless Power Transfer" are Cem Som, Division Manager Wireless Power Transfer at Würth Elektronik eiSos; and Dr. Michael de Rooij, Vice President Applications Engineering at Efficient Power Conversion Corporation, Inc. The book costs 19 euros and can be ordered from Würth Elektronik eiSos or through bookstores.

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從2010年開始，自矽基氮化鎵（GaN）電晶體商用化後，低壓氮化鎵電晶體推動了很多全新應用的發展。氮化鎵元件具備超快速開關，推動全新市場諸如雷射雷達、波峰追蹤及無線電源市場的出現。這些全新應用進一步實現更強大的供應鏈、低製造成本及元件前所未有的高可靠性。這些優勢使得比較保守的設計工程師在DC/DC轉換器、AC/DC轉換器及車載等各種應用開始對氮化鎵元件進行評估。在本文章系列，我們將討論多種發揮氮化鎵元件優勢的應用，實現最終產品差異化的競爭優勢。首先，我們會探討是甚麼因素加快了氮化鎵元件的普及。

Power Systems Design
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EPC CEO & Co-Founder, Alex Lidow gives Lee Teschler from EE World Online a tour of the EPC booth at APEC 2018 where EPC demonstrations included a high-power density 48 V – 12 V non-isolated converter capable of delivering over 700 W. In addition, a range of 3-D real-time LiDAR imaging sensors used in autonomous vehicles were displayed. Also, a single desktop implementing a high power resonant wireless charging solution capable of generating 300 W to wirelessly power a wide range of devices including cell phones, notebook computers, monitors, wireless speakers, smart watches, and table lamps.

View videos below.

Wireless power charging was a big point of discussion with a number of different solutions on the APEC 2018 exhibit floor. The following wireless charging solutions had unique aspects in their strategies; let’s take a look at what I saw over the last few days.

EDN Network
By Steve Taranovich
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In this video Alex Lidow, Founder and CEO of EPC, talks to Alix Paultre, Editor-in-Chief of Power Electronics News, about the various demonstrations of GaN-based solutions at the EPC booth at APEC 2018 in San Antonio, Texas. The high-frequency operation and other advanced performance advantages over Silicon enables GaN to empower applications from LIDAR to wireless power transmission. The booth exhibits include examples of these, from a real-time LIDAR demonstration to a running "wireless desk".

Power Electronics News
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LAS VEGAS — Once again the marathon that is CES is drawing to a close. Four days of trade show plus two days of media events. All sprawled across five miles of Las Vegas in some insane number of hotels and conference venues. As usual, I stuck it out so you don’t have to. Here are some of the images that struck me as interesting, weird, or just plain worth remembering:

Extreme Tech
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Wireless power, the ability to deliver electricity to gadgets without plugging those gadgets into a cable, is a hotbed of innovation at the moment. The dominant standard, called “Qi,” is ever under attack from other efforts.

This week saw interesting developments from Energous (WATT), which aims to transfer power via radio frequency transceivers, with limited results so far, and some controversy about its business.

There are other contenders. On Wednesday in Las Vegas, during the Consumer Electronics Show, I met with Alex Lidow, who is founder of a privately held chip company EPC of El Segundo, California.

Barron's
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如果要無線充電得以普及， 無線充電系統必需從小型充電墊發展成為大面積無線電源。這就需要磁共振系統的線圈、系統架構及功率放大器各方面的基本改變。基於氮化鎵元件的放大器已經被證明為可以在廣闊的負載範圍內發送60 W功率至發射線圈並實現超過90% 的效率。

作者：張遠哲及Michael A. de Rooij
Power Electronics Europe雜誌
2017年11月/ 12月刊
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Alex Lidow, CEO of Efficient Power Conversion, talks to Leo Laporte about Gallium Nitride, and how it is being used to create the next generation of microchips and wirelessly power the world.

This Week in Technology
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宜普電源轉換公司首席執行官兼共同創辦人Alex Lidow展示大面積無線充電技術如何傳送電源。

Digital Journal
2017年9月18日
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Nextbigfuture訪問了EPC公司的首席執行長Alex Lidow。 EPC公司是製造氮化鎵電晶體的領導廠商，目前帶領業界開啟無線充電新時代。在5至10年內，我們將有可能看到全屋或辦公大樓從採用昂貴的電源線改為在廣泛地方採用無線充電解決方案。

NextBigFuture
2017年9月9日
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The year is 2022. You sit down at your office desk, back from Ikea with your new lamp. You take it out of the box, place it on the table, and it illuminates the workspace immediately. You then take your MacBook out of your backpack, place it to the right of the lamp, and it starts charging instantly. It sounds unreasonable to think that all this could become reality in just a few years. But behind closed doors, this technology already exists.

“A couple of months ago, we demonstrated an entire table top where everything on it was powered wirelessly,” Alex Lidow, CEO of EPC, tells Inverse. “A lamp, computer monitor, computer, cell phones being charged… all sorts of stuff.”

Inverse Innovation
August, 2017
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Since Nikola Tesla first experimented with wireless power during the early 1900s, there has been a quest to “cut the cord” – and go wireless. Today’s applications for wireless power undoubtedly extend far beyond Tesla’s wildest imagination, as we now have the ability to wirelessly charge cell phones, power tools, and even buses while at their scheduled stops, not to mention airborne drones while flying. However, despite strong consumer and business demand for wireless charging, power cords still reign. What explains the lag in our ability to power all of our electronic devices and appliances wirelessly?

ITProPortal
August 2, 2017
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During our lifetime furniture design has been primarily dictated by style. However, as we become gradually more entangled in the internet of things, function is going to become increasingly important.

Future of Everything
July 20, 2017
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GaN power element technology has found its way into a major application in the industry with the release of the Dell Latitude computer using the AirFuel standard.

Planet Analog
July 19, 2017
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EPCが無線充電用途向けeGaN FETとパワーキットに関するデータ一覧

日経BP社
2017年6月15日
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