Apologies, just happened to see this old post today. Because I wasn't paying close attention while reading, my first thought of "four terminal MOSFET" was a SENSEFET, the old Moto MTP10xxx parts that I used to make some isolated solid state relays with zero-cross turn on and turn off. Then I realized you were talking about FETs with a separate substrate pin. Then I started wondering about those Moto parts again...what could I do with that current sense terminal... measure a portion of the output current, compare that with a tube model, feed the difference back to the drive. Seems like someone would have tried by now, maybe Pritchard, but can't find anything.
Are there any news ?
The mentioned link is death in the meantime. The title of that paper was follow:
"Modeling of a GaN based Static Induction Transistor"
Authors: Gabriela E. Buneaa1, S.T. Dunhama and T.D. Moustakasa
- go to
Cambridge Journals Online - Abstract
more URLs:
http://www.patentgenius.com/patent/RE42955.html
http://www.patentstorm.us/patents/RE42955/claims.html
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