Original question:
Tool/software:
Hello, I have downloaded unencrypted model for PSpice from LM3488 page and uploaded it to LTspice for simulation. I assembled the circuit and when tried to play transient simulation, got this error: "U1:v_iss_tst: requires a minimum of 5 parameters. Only 3 specified".
I didn't changed anything inside this converter model, so is it faulty ? Can anyone share working spice model of this part? I will also add my circuit:
Hi Dominykas,
Thanks for using the e2e forum.
Unfortunately, our modeling support is limited to PSpice for TI, so I am lacking both experience and capability for helping in debugging a LTspice model.
From a schematic point of view, I saw a mistake at the sense resistor connection (R2). The sense resistor needs to be connected to GND and the sensing circuits needs to be above the sense resistor:
However, this should not be the root cause of the LTspice error.
Have you translated the netlist file properly from PSpice to LTspice? It cannot be copied from one simulator to the other without syntax adjustments.
A helpful thread on this can be found here:
https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/692613/faq-tina-spice-note-about-encrypted-models-and-importing-models-from-one-simulator-to-another
Best regards,
Niklas
