What Happened To GaN And SiC?

About five years ago, some chipmakers claimed that traditional silicon-based power MOSFETs had hit the wall, prompting the need for a new power transistor technology. At the time, some thought that two wide-bandgap technologies—gallium nitride (GaN) on silicon and silicon carbide (SiC) MOSFETs—would displace the ubiquitous power MOSFET. In addition, GaN and SiC were supposed to pose a t... » read more

Searching For The Next Power Transistor

For decades, the industry has relied on various power semiconductors to control and convert electrical power in an efficient manner. Power semis are ubiquitous, as they are found in adapters, appliances, cars, elevators, switching power supplies, power grids and other systems. But today’s silicon-based power semiconductor transistor technologies, such as IGBTs, MOSFETs and thyristors, are ... » read more

IGBT Power Cycling And Lifetime Testing

I have never been very good at introducing topics. During my presentations, I either jump directly into the subject matter, or start with a joke. My mom always said I could be a stand-up comedian. I prefer to sit. Oddly, that led me to becoming an engineer. And while this introduction does not lead me any closer to my actual topic, I presume some people rolled their eyes back and crossed their ... » read more