EPC Technical Articles

GaN HEMTs Outperform MOSFETs in Key Growth Applications

Silicon power MOSFETs have not kept pace with the evolutionary changes in the power electronics industry, where factors such as efficiency, power density, and smaller form factors are the main demands of the community. Silicon MOSFETs have reached their theoretical limits for power electronics, and with board space at a premium, power system designers need alternatives. Gallium nitride (GaN) is a high-electron-mobility transistor (HEMT) semiconductor that is adding real value in emerging applications.

August, 2020
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GaN for Power Conversion

With silicon near its theoretical limits new designs heavily favor the continued adoption of GaN devices. GaN devices are early in their evolution, with advances in performance and integration and more products coming.

Electronics Weekly
December, 2019
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Wireless Power Webinar: Why GaN Improves Efficiency, Reduces Size, and Lowers Cost in AirFuel Resonant Wireless Power

In this webinar, Alex Lidow, CEO of Efficient Power Conversion Corporation, discussed how GaN technology significantly improves system efficiency, size, and cost, thus accelerating the adoption of magnetic resonance and AirFuel Resonant technology.

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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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The Power and Evolution of GaN

Gallium nitride(GaN)-on-silicon low voltage power devices have enabled many new applications since commercial availability began in 2010. New markets, such as light detection and ranging (LiDAR), envelope tracking, and wireless power, emerged due to the superior switching speed of GaN. These new applications have helped develop a strong supply chain, low production costs, and an enviable reliability record. All of this provides adequate incentive for the more conservative design engineers in applications, such as dc–dc converters, ac–dc converters, and automotive to start their evaluation process. In this series, a few of the many, high volume applications taking advantage of GaN to achieve new levels of end-product differentiation will be discussed. First, it is useful to explore the factors attributing to the rapid acceleration of the adoption rate.

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.

View videos below.

How eGaN Transistor Technology Improves LiDAR Performance
Why Gate Drivers are Joining eGaN Transistors on the Same Chip
Graphics-Intensive Applications Benefit From Power-Dense eGaN® DC-DC Converters

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".

Power Electronics News
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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.

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WIRELESS POWER GaN FETs Enable Large Area Wireless Power Transfer

To ensure widespread adoption, wireless power systems need to move beyond small charging pads and become active power sources over large surface areas. For magnetic resonant systems, this demands fundamental changes in coil technology, system architecture, and power amplifiers. Gallium nitride based amplifiers have proven capable of delivering 60 W with greater than 90 percent efficiency into the transmit coil over a wide load range.

By: Yuanzhe Zhang and Michael A. de Rooij
Power Electronics Europe
November/December 2017
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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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Interview with the physicist who has advanced wireless power

Alex Lidow, CEO and co-founder of Efficient Power Conversion Corporation, has demonstrated the ability to transmit power from large surfaces.

Digital Journal
September 18, 2017
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EPC is leading the world to a new age of wireless power

Nextbigfuture interviewed Alex Lidow, CEO of EPC. EPC is a leader in Gallium Nitride electronics and now is leading the charge to a new age of wireless power. In 5 to 10 years, we could begin to see entire houses or office buildings switching from costly wiring of buildings to a complete large area wireless solution.

September 9, 2017
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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?

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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Wireless Electronic Tabletop Could Mean Many Fewer Power Cords

Tech-sector veteran Alex Lidow is on a mission to end the reliance on power cords to operate your electronic devices.

June 15, 2017
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