Power Technologies and the Future of the Auto Industry

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“The Conversation” is a video series in which GaN Systems’ executives engage in conversation with leaders in industries that are being revolutionized as a result of changes in power technologies. Change for these companies is not limited to their bottom line, but extends out to issues around technology’s impact on global energy consumption.  Industries explored include data centers, automotive, consumer electronics, renewable energy, and industrial.

In this episode of ‘The Conversation,’ Jim Witham, CEO of GaN Systems (a leading GaN power semiconductor company) joins Stefan Heck, CEO of NAUTO (an autonomous vehicle technology company using an AI-powered connected camera network.) The topic: How power semiconductors are playing a significant role in driving change in the electric (EVs) and autonomous vehicle industry – both in the design of vehicles, but also in the impact on the data centers required to address and analyze the data that they generate.

Jim:

Stefan – It’s great to see you here at your offices at NAUTO.  We’ve spent some time talking in the past about power technologies and I know that you’ve written and talked extensively about the subject. I thought it would be great to talk about this and share a few thoughts with our audience

 

Stefan:

Power technologies are a huge trend for the world – electrifying all kinds of devices.

Power technologies first changed our world 100 years ago, but were now on the cusp of another whole round of change just like that.

 

Jim:

At GaN Systems were seeing a lot of companies who are really interested in saving energy but also in saving materials. The size, weight, and the cost of those materials in their power systems are important.  Two of the markets where we see a lot of change happening are automotive/transportation and also data centers. At Nauto your focus is in the area of the transportation network. How do you see the power and transportation markets colliding and changing?

 

Stefan:

As we talk about ground transportation (a space both of our companies are in now), there’s a massive shift happening over the next decade toward what I called ACES – autonomous, connected, electrified, shared.  This is what I mean by that: Autonomous vehicles need to be recharged, and if they are shared they can be used all day all the time – very efficiently.  And as electric vehicles, they don’t have any emissions as they go around the city, so we reduce urban pollution and have a lower cost per mile.

 

Jim:

We’ve seen three major areas where power electronics are making an impact in the transportation marketplace.

  1. Charging electric cars,
  2. Power distribution system, the DC to DC converters to get power to your seats and dashboard,
  3. The electric motor itself

 

Stefan:

I think those are right.

 

Today if you look at an internal combustion car, it is horribly inefficient. The overall efficiency of the motor and drive train is down in the low 30%. The electric motor is typically 85-90% efficient; sometimes even more if its highly optimized

 

Jim:

Big difference.

 

Stefan:

Huge difference.  Almost triple.  That’s triggering a whole change in car architecture.  And with autonomy coming in we’re about to add even more sensors – LIDAR and SONAR and RADAR.  So there’s a lot more electronics in the car both for the compute and for the sensors.

 

Jim:

I think that power semiconductors are going to play a big role in this transformation that you’re talking about.

 

With some of the new devices that are out there you can dramatically increase the switching speed.  That means that all of the components in the power system can get smaller, because as frequencies go up, size goes down.

 

You can take the magnetics and the capacitors and make them tiny compared to what they are today. You can also increase the efficiency of the system tremendously, so heat sinks get smaller. You take metal out of the system. And when you do all that, it makes systems that are 3-4 times lighter in weight, 3-4 times smaller in size, and less expensive, because you’ve taken all of those materials away.

 

All of that really enables the electric vehicle.

 

Stefan:

That’s really important. Not only does it get smaller and less expensive, but suddenly new opportunities open up.  Once I’ve got an electric car with the power train much smaller and lighter I can make the vehicle more flexible.

 

Jim:

Big changes in the car industry.

 

Stefan:

Huge changes. It will soon be unrecognizable.  We have new entrants coming in, and we’ve got pieces disaggregating.  There are a lot of new components coming in, so for an OEM its an exciting time. You can completely reinvent how a car is designed, and conceived now with a flexible power electronics architecture.

 

Jim:

Stefan I read the other day that every autonomous car will put out 4 TB of information every day. If that’s the case, aren’t we looking at a tremendous amount of data coming onto our systems that we are going to have to deal with?

 

Stefan:

The data part is growing massively.  But the volume of cars actually won’t grow that much.  In developed countries, the total car pool is expected to shrink. Were at about a billion cars today.  The developed world will drop to 2/3 or maybe half of that.  The emerging markets are still growing.

 

Jim:

It’s interesting to see that auto manufacturers like BMW, Ford, and Toyota are all starting to really pay attention to data. In the past decade, I think that data centers were using about 1% of all electricity in the world.  That has kicked up to about 3% today.  People are talking about that going upwards to 10%, and it could be even higher with the data used by cars.

 

Stefan:

Autonomous electric cars and shared cars are going to reduce the amount of energy consumed in transportation.  But near term, they’re gong to increase the amount of data center usage.  So unless we make those data centers more efficient, we just transfer the heat so to speak.

 

We really have to do something about the data centers too.  Otherwise we are just shifting power consumption from one area to another.

SiC vs GaN Head-to-Head Performance Comparison

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A lot of engineers don’t have a good feel for how gallium-nitride FETs perform compared to silicon-carbide equivalents. So GaN Systems devised two 650-V, 15-A switching supplies using SiC and GaN to see how they compared. In an interview conducted by WTWH Media’s Lee Teschler, Jim Witham explains the differences that emerged in this head-to-head study.

PSDtv – GaN Systems on Customer’s Applications of GaN Transistors

In this episode of PSDtv from PCIM Europe 2017, Jim Witham, CEO of GaN Systems discusses benefits of wired and wireless charging using GaN transistors. Jim discusses a wired charger for notebook computers that generates a power density of 35 W/cubic inch…which is 3x the normal charger power density. Also shown is a wireless charger that produces 70 W of power. This device can be placed under a conference table or in a hotel room, and is capable of charging a notebook computer or fast-charging multiple cell phones.

PSDtv – GaN Systems on Customer’s Applications of GaN Transistors

In this episode of PSDtv from PCIM Europe 2017, Jim Witham, CEO of GaN Systems discusses benefits of wired and wireless charging using GaN transistors. Jim discusses a wired charger for notebook computers that generates a power density of 35 W/cubic inch…which is 3x the normal charger power density. Also shown is a wireless charger that produces 70 W of power. This device can be placed under a conference table or in a hotel room, and is capable of charging a notebook computer or fast-charging multiple cell phones.

Customer Products on Display at PCIM 2017

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This video, originally published on Electronics Products Magazine’s YouTube channel, was recorded at PCIM 2017. GaN Systems’ CEO, Jim Witham, talks with Alix Paultre about the adoption of GaN technology and describes some of the 30+ customer products displayed at PCIM that are performance-optimized by GaN transistors.

Customer Products on Display at PCIM 2017

This video, originally published on Electronics Products Magazine’s YouTube channel, was recorded at PCIM 2017. GaN Systems’ CEO, Jim Witham, talks with Alix Paultre about the adoption of GaN technology and describes some of the 30+ customer products displayed at PCIM that are performance-optimized by GaN transistors.

Wireless Charging Using GaN Transistors

Charge pads can now charge multiple wireless devices simultaneously thanks to gallium-nitride FETs. In this short demo, WTWH Media’s Lee Teschler interviews GaN Systems’ Jim Witham who described a 70-W charging pad built by Gill Electronics to the AirFuel standard that has a two-inch throw. This feat is made possible only through the use of GaN semiconductors able to switch at AirFuel’s 6.78 MHz frequency standard.

How GaN Enhancement-mode HEMT devices improve the preformance of Power Systems

This video was produced by Aspencore and posted to Electronics Know-how.

Power system companies continue adopting gallium nitride (GaN) transistors in place of silicon IGBTs and MOSFETs. By designing GaN into power systems and modules, customers have launched a stream of smaller, lighter and less costly electronic systems into the market. These products exhibit dramatic performance improvements that typically include 80% reductions in size and 5X increases in power density. At electronica GaN presented an array of new power systems designed by GaN Systems’ customers that incorporate GaN Enhancement-mode HEMT (E-HEMT) devices, and that target automotive, energy storage, wireless charging, consumer and industrial applications.

GS66508T-EVBHB high current half bridge evaluation board from GaN Systems on Vimeo.

GaN Transistors Unleash Wireless Power Transfer (WPT)

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In this episode of PSDtv, originally recorded by Alix Paultre,  CEO Jim Witham takes us through GaN Systems’ booth at electronica 2016, held in Munich, Germany this past November. Mr. Witham describes our latest advances and shows examples of how customers are using our latest GaN transistor products in their power systems.

Ricardo Discusses Using GaN Transistors in Automotive Systems

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The auto industry is poised to begin a shift from silicon chips to smaller and more efficient “wide-bandgap” semiconductors made with gallium nitride, says Karina Morley, Ricardo’s commercial director, Automotive.

These advanced chips will be 20%-50% smaller than the silicon semiconductors they replace. That will enable far more compact electronic control modules. Gallium nitride chips are likely to debut in about 2019 in audio amplifiers, laser sensors and 48-volt control modules for electric and hybrid powertrains, Morley says.

She notes that Ricardo is applying its expertise in systems and component interaction to help carmakers develop next-generation computer modules.

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