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zevon8 said:As I understand it, all the "Hex-Fets" from International Rectifier have the intrinsic body diode, it is by nature of their design, possibly all Mosfets are like this. Small signal devices do not require the die area, and it is likely left "floating" as it were.
ST Microelectronics has some interesting FET's , some with pretty unique characteristics, maybe they have something suitable? www.st.com
Optikon said:Does anyone know if you can get N & P channel _power_ MOSFETS that do not have the substrate connected to source?
Styx said:is there any particular reason you have to use a FET?
if not use an IGBT (those rating you state are starting to enter IGBT territory)
they dont have any anti-parallel diode, unless you get one like that - rare in distrete form
williB said:Look at how they Show two MosFets connected together , to block current in both directions..
If i have to use two then so be it..!!
Agent 009 said:What's a Hex-Fet???
Ron H said:I did a search for "power JFET", not expecting to find anything. I found **broken link removed**.
No, a JFET is not a MOSFET sans body diode. The technology is very different.
Optikon , what is the current carrying capibility of that Jfet ..?Interfet makes a 100V+ Jfet.. which is rare also..
williB said:Optikon , what is the current carrying capibility of that Jfet ..?Interfet makes a 100V+ Jfet.. which is rare also..
Optikon said:Styx said:is there any particular reason you have to use a FET?
if not use an IGBT (those rating you state are starting to enter IGBT territory)
they dont have any anti-parallel diode, unless you get one like that - rare in distrete form
IGBT will have too high a saturation voltage. My application needs bi-directional controlled current flow.
If I could get one off the shelf, I'd use it but since it seems to be exotic (at best), I'll just use 2 mosfets in series with sources tied together.
williB said:hmm
i want to use Mosfets to transfer power from my generator as efficiently as possible..
since you are familiar with using two Mosfets to transfer power ( and block it ) .. what do ya think of my Full wave rectifier , using mosfets..
i have allready simulated a mosfet pair and it does in fact work..
the problem is finding a proper ground in this comfiguration..
the inductors labeled L3&L4 are really coils from my generator..
about the ground , the comparators are going to need a reference to know when one leg is more positive than the other..
When the L4 leg is positive with respect to L3 . then A & B would be on and C & D would be off..
the connection between A & C Labeled Vout is positive , the other Vout is negetive..