EPC技术文章

面向快速发展的关键应用的GaN HEMT,它的性能优于MOSFET

硅功率MOSFET未能跟上电力电子行业的发展变化,而效率、功率密度和更小的外形尺寸等因素是行业的主要需求。 硅MOSFET器件的性能已达到其理论极限,并且由于电路板的空间非常宝贵,因此功率系统设计人员必需找出替代方案。 氮化镓(GaN)器件是一种高电子迁移率晶体管(HEMT),这种半导体正为新兴应用不断增值。

EETimes
2020年8月
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采用GaN技术的电源转换

当硅技术已经到了性能极限,采用氮化镓器件的全新设计使得氮化镓技术得以继续普及。氮化镓器件的发展还是刚刚起步,它的性能将得以继续提升、集成电路也将会更具优势,以及将有更多全新的氮化镓产品推出市场。

Electronics Weekly
2019年12月
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无线电源在线硏讨会:为什么氮化镓器件在符合AirFuel标准的共振式无线电源应用中,可以提升效率、缩小尺寸及降低成本?

宜普电源转换公司首席执行官Alex Lidow 在是次硏讨会讨论氮化镓技术如何大大改善系統的效率、尺寸及成本,从而加快磁共振及AirFuel共振技术的普及。

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PCIM Europe – where power is at the core of innovation

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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EPC partners with Würth Elektronik eiSos to present Trilogy of Wireless Power Transfer

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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氮化镓的雷霆威力及演变

从2010年开始,自硅基氮化镓(GaN)晶体管商用化后,低压氮化镓晶体管推动了很多全新应用的发展。氮化镓器件具备超快速开关,推动全新市场诸如激光雷达、包络跟踪及无线电源市场的出现。这些全新应用进一步实现更强大的供应链、低制造成本及器件前所未有的高可靠性。这些优势使得比较保守的设计工程师在DC/DC转换器、AC/DC转换器及车载等各种应用开始对氮化镓器件进行评估。在本文章系列,我们将讨论多种发挥氮化镓器件优势的应用,实现最终产品差异化的竞争优势。首先,我们会探讨是什么因素加快了氮化镓器件的普及。

Power Systems Design
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EPC at APEC 2018 by EE Online

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.

Diversity of trends in wireless power charging at APEC 2018

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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Alex Lidow walks Alix Paultre through the EPC booth at APEC 2018

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".

CES 2018 in Photos: What We Remember Most

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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EPC’s Wireless Power Fix: Get a Load of This Antenna

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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无线充电 - 基于氮化镓场效应晶体管(GaN FET)的大面积无线电源解决方案

如果要无线充电得以普及, 无线充电系统必需从小型充电垫发展成为大面积无线电源。这就需要磁共振系统的线圈、系统架构及功率放大器各方面的基本改变。基于氮化镓器件的放大器已经被证明为可以在广阔的负载范围内发送60 W功率至发射线圈并实现超过90% 的效率。

作者:张远哲及Michael A. de Rooij
Power Electronics Europe杂志
2017年11月/ 12月刊
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This Week in Technology – Triangulation Episode 319 “Our Friend Gallium Nitride”

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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人物专访:推动无线充电技术发展的物理学家

宜普电源转换公司首席执行官兼共同创办人Alex Lidow展示大面积无线充电技术如何传送电源。

Digital Journal
2017年9月18日
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EPC正在带领全球开启无线充电新时代

NextbigFuture访问了EPC公司的首席执行官Alex Lidow。 EPC公司是制造氮化镓晶体管的领导厂商,目前带领业界开启无线充电新时代。在5至10年内,我们将有可能看到全屋或写字楼从采用昂贵的电源线改为在广泛地方采用无线充电解决方案供电。

NextBigFuture
2017年9月9日
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The Race to Cut the Power Cord is Already Happening

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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Why a world without power cords is now within reach

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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Ask The Thought Leaders: What’s The Future Of Furniture?

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 finds its way, via AirFuel, into Dell’s Lattitude 7285

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 無線充電用途向けeGaN FETとパワーキット一覧

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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