Tuesday, January 29, 2008

Good Changes Ahead

I just wanted to share the fact that I am so happy about the upcoming US presidential election! Let me explain:

My several scientist friends have independently provided me with odds over who is electable and when I compare each of their opinions I find that together they agree that the following three candidates are by far the only reasonably electable candidates for the next US president:

Barack Obama
Hillary Clinton
John McCain

Heck, this is wonderful since each one of these candidates is estimated by those same scientists to be approximately 1,000,000,000,000 (1 trillion) times more likely to take good decisions for the US citizens and indeed for the entire planet!

And good decisions ahead bodes well for increased deployment of gallium nitride solutions since they will help us a lot in driving improved electrical efficiency for a broad range of commercial applications, including automotive and renewable energy electricity management systems.

The Bush Years of Evil (BYE) are coming to an end and better times are around the corner!

Wednesday, January 16, 2008

Will GaN Beat SiC For Hybrid Electric Vehicles?

Hello everyone! I am excited to find out that the US Department of Energy has established something called the FreedomCAR and Fuel Partnership which you can read about at http://www1.eere.energy.gov/vehiclesandfuels/about/partnerships/freedomcar/.

If you tunnel in a bit you find out that there are strong thoughts that wide bandgap semiconductors will find their way into future automobiles because of their ability to enable higher electrical efficiency while simultaneously operating at higher temperatures which then enables reduced cooling needs. For example, see pages 19 & 20 of http://www1.eere.energy.gov/vehiclesandfuels/pdfs/program/eett_roadmap.pdf.

You see, today's hybrid electric vehicles like the Toyota Prius require an extra water cooling line to cool off that hot set of silicon electronics for the inverter and other parts of the electronics helping the hybrid do its thing. Silicon gets very hot because it wastes so much electricity. This is very cool for gallium nitride and silicon carbide since both offer major benefits, not only in electrical efficiency, but also because they can handle higher current densities so you can make them smaller, and because they can be run much hotter (due to higher bandgaps) which means less cooling needs.

Will GaN beat SiC or will SiC win? Or will both GaN and SiC have a place in future automobile power electronics? Well, I am placing my bets on GaN. But however it comes out, its sure gonna be a fun ride!

Yours truly,

Captain Nitride