Inconsistent mask parameters-Error in MATLAB

Thread Starter

Janani_Rajkiran

Joined Nov 1, 2016
46
Hi I am getting the following error in MATLAB

Inconsistent mask parameters. Derived value for Gain, K, must be greater than zero.

I used an N-Channel MOSFET in simscape electronics and entered the specifications as given in the data sheet of the MOSFET of my choice and I am getting the above said error

Any way to solve this or any reason why I am getting this error?
 

Max_

Joined Jan 5, 2017
2
Hi Janani,

Which MATLAB release are you using?
Can you point me to the datasheet you used to parametrize your MOSFET?

Thanks,

Max
 

Max_

Joined Jan 5, 2017
2
Hi Janani,

Most likely the value for the "Drain-source on resistance, R_DS(on)" you entered from the datasheet is in Ohm (e.g. 4.4 typical or 5.8 max), but it should be specified in mOhm. If you specify 4.4e-3, or 0.0044 then it should work. Please note that mOhm as unit is not milli-ohm (10e-3), but it will be interpreted at MOhm (10e6).

You will also need to lower the Drain ohmic resistance so that Rds > (source ohmic resistance + drain ohmic resistance).

I hope this helps.

Max
 
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