Power MOSFET spice model problem

Thread Starter

BlackMelon

Joined Mar 19, 2015
85
Hello,

Please refer to the following link: https://www.st.com/en/power-transistors/stp55nf06.html# and also the attachments.
I have downloaded the pspice model of STP55NF06FP. (Please click on HW Model, CAD Libraries & SVD link).
I copied the .lib file to C:\Users\<My name>\Documents\LTspiceXVII\lib\sub and use LTSpice to create the symbol. (Right click on the line .SUBCKT and click create symbol).

However, after I perform a simulation, the waveform of STP55NF06FP is incorrect. Here, I compare the result with that of IRFZ44N. Please see the drains' waveforms. The gate driving signal is 0V - 10V square wave with 50% duty ratio and period of 50 microseconds.
Could you please give me an idea of how to solve this problem?

Sincerely,
BlackMelon
 

Attachments

Bordodynov

Joined May 20, 2015
2,604
Place file Nmos_ST.lib to C:\Users\<My name>\Documents\LTspiceXVII\lib\sub
Place a symbol on your circuit and select the desired transistor from the pop-up menu. The model is adapted to LTspice. The Pspice model in LTspice gives an overvalued open transistor resistance of 0.002 ohms. For high power transistors this is a noticeable error.
 

Attachments

Thread Starter

BlackMelon

Joined Mar 19, 2015
85
Place file Nmos_ST.lib to C:\Users\<My name>\Documents\LTspiceXVII\lib\sub
Place a symbol on your circuit and select the desired transistor from the pop-up menu. The model is adapted to LTspice. The Pspice model in LTspice gives an overvalued open transistor resistance of 0.002 ohms. For high power transistors this is a noticeable error.
Thank you for the information. This is very helpful. I will update you with the result after following this guideline

Sincerely
 
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