On Wednesday 22 May 2013 15:49:22 Jon Elson did opine: > Gene Heskett wrote: > > Perhaps the next generation of devices > > that may come out of the next shrink might find a better geometry to > > alleviate this? > > There probably won't be any "shrinks" with the current Silicon > technology, I think the MOSFET is pretty mature. They are trying, but > it looks like they > have pretty much hit their own "Moore's wall",
Higher voltages seems to enforce that. > and further improvements > are in very small steps. Mostly they are working to improve reliability > under high-voltage switching avalanche conditions. > Yet another failure mechanism that can let all the smoke out in 10 u-secs. > Eventually, some other technology may take over, SiC, SiN or something. > > But, a low enough drive impedance, and it doesn't have to be massively > low, will prevent unwanted turn-on even when the D-S voltage has > a rapid rise. The calculation is easy, just I = dV/dT * Cm, where Cm > is the Miller capacitance. As long as the driver impedance + gate > resistor keeps the gate below the threshold, the transistor stays off. > > Jon I think you just said it better than I could. I've been too far away for too long I guess. Thanks Jon. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! My views <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> It takes all kinds to fill the freeways. -- Crazy Charlie A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
