=20
> IGBTs definitely still have niche applications but I think it is
> very rare that they would be the optimal design choice today
> for voltages below 400V.

If you're meaning supply voltage and a non-inductive load then
a simple FET would do. So eg a simple 20V FET for a 12V
LED application. But when you figure in back-EMF from motors
and other inductors then IMHO it isn't quite so clear-cut. You can
still use a 20V FET of course but have to add components to stop
it from being blown. For all their d-s capabilities FETs are quite
fragile. For my application a logic FET could have been used, albeit
needing a driver (a couple of transistors) and spike protection. A
suitably-rated IGBT (ie a part that was actually engineered for
driving coils and coping with EMF) is a simple one-part solution

Joe




-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.5961 / Virus Database: 4355/9991 - Release Date: 06/10/15

--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.