Author Topic: How to simulate DC characteristics of a 5 terminal MOSFET?  (Read 1880 times)

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Offline tec5cTopic starter

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How to simulate DC characteristics of a 5 terminal MOSFET?
« on: February 06, 2017, 11:39:28 pm »
Hi all,

I have a model of a 5 terminal MOSFET; Drain, Source, Gate, Body, Substrate, that I am trying to simulate its DC characteristics (IV curve). I know for certain that the Body is not tied to the Substrate terminal but I am unsure on what I should do here to get the sim working.

Any advice on how I can simulate such a model? I am working in LTSpice.




 

Offline T3sl4co1l

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Re: How to simulate DC characteristics of a 5 terminal MOSFET?
« Reply #1 on: February 07, 2017, 03:03:06 am »
Well, do whatever the datasheet tells you to do...  You've told us basically nothing about it, so we can only make vague guesses.

On the upside, you can't burn any parts by wiring it up randomly.  Give it a try... ;)

Tim
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Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 

Offline danadak

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Re: How to simulate DC characteristics of a 5 terminal MOSFET?
« Reply #2 on: February 07, 2017, 11:45:38 am »
Not clear to me the difference between body and substrate connection.

In short the substrate normally connected to source terminal. If it is connected
to another bias point where the Vbias is not same as Vsource that affects the
threshold voltage of the MOSFET.

Called the body effect or source bulk effect.     https://en.wikipedia.org/wiki/MOSFET


Regards, Dana.
Love Cypress PSOC, ATTiny, Bit Slice, OpAmps, Oscilloscopes, and Analog Gurus like Pease, Miller, Widlar, Dobkin, obsessed with being an engineer
 


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