Hi,
I'm testing the IXTP08N100D2 Depletion N-Mosfet in a cathode CCS. So far so good, it works exactly as expected in real life.
Now I want to add this type of MOSFET to my ltSpice XVII schematic diagram for simulation and analyzing. I found only one spice model on the IXYS website: IXTT20N50D. I did not edit this file, but just added this to my files and to my drawing. When trying to run a test I get an error.
I'm very limited in my knowledge of LTspice, and cannot work out what went wrong or what to change.
Regards, Gerrit
I'm testing the IXTP08N100D2 Depletion N-Mosfet in a cathode CCS. So far so good, it works exactly as expected in real life.
Now I want to add this type of MOSFET to my ltSpice XVII schematic diagram for simulation and analyzing. I found only one spice model on the IXYS website: IXTT20N50D. I did not edit this file, but just added this to my files and to my drawing. When trying to run a test I get an error.
I'm very limited in my knowledge of LTspice, and cannot work out what went wrong or what to change.
Regards, Gerrit
Attachments
Try one of these models:
XYS IXTP08N50D2 and IXTP08N100D2 LTspice model
If you post your LTspice schematic we might be able to help you better.
XYS IXTP08N50D2 and IXTP08N100D2 LTspice model
If you post your LTspice schematic we might be able to help you better.
Gerrit,
you don't need the .asy
Just put a NMOS and .lib IXTT20N50D.lib on the canvas
Hold down control and then RMB on the NMOS, then set value=IXTT20N50D
(By setting prefix=X, LTspice expects a .SUBCKT and not a .MODEL)
you don't need the .asy
Just put a NMOS and .lib IXTT20N50D.lib on the canvas
Hold down control and then RMB on the NMOS, then set value=IXTT20N50D
(By setting prefix=X, LTspice expects a .SUBCKT and not a .MODEL)
Hi,
First of all thanks for all the help.
I have used the information posted by Ray to get the right IXYS part in the diagram. But I cannot get the MOSFET working in simulation. There should be around 4 mA running in each triode, with 8 mA total running through the MOSFET.
This is not true in this simulation. LTspice runs the file without any errors. I'm pretty sure I made a mistake somewhere, but I don't have enough knowlegde of LTspice yet to find out what or where.
I attach the essential part of my diagram with the MOSFET CCS. I see the old ISYS part is still mentioned, but I don't think that causes the difference.
Regards, Gerrit
First of all thanks for all the help.
I have used the information posted by Ray to get the right IXYS part in the diagram. But I cannot get the MOSFET working in simulation. There should be around 4 mA running in each triode, with 8 mA total running through the MOSFET.
This is not true in this simulation. LTspice runs the file without any errors. I'm pretty sure I made a mistake somewhere, but I don't have enough knowlegde of LTspice yet to find out what or where.
I attach the essential part of my diagram with the MOSFET CCS. I see the old ISYS part is still mentioned, but I don't think that causes the difference.
Regards, Gerrit
If you reverse V3 (negative bias voltage + tied to ground) and set value to "-40V", the result on "-" pin is +40V!!!
Change "-40V" to "40V".
p.s. in my schematic I use own tubes made by Stephie Bench:
Drop Down Menus for selecting your tube - Intact Audio
Change "-40V" to "40V".
p.s. in my schematic I use own tubes made by Stephie Bench:
Drop Down Menus for selecting your tube - Intact Audio
Last edited:
Hi,
Thanks for correcting my serious voltage error! I will check the other tube models tomorrow.
I changed my "big" diagram too and now it looks a lot better.
Regards, Gerrit
Thanks for correcting my serious voltage error! I will check the other tube models tomorrow.
I changed my "big" diagram too and now it looks a lot better.
Regards, Gerrit
Attached is the Ayumi model for the 6SN7. Everyone has their own model preferences but the Ayumi models have served me well. Here is a link to a pretty complete library of tube models. The file you want is Ayumi_LTspice.zip.
Vacuum Tube SPICE Models
Vacuum Tube SPICE Models