LMG1205: Error in LMG1205 model simulation using LTSPICE software

Lu yang

Part Number: LMG1205
Other Parts Discussed in Thread: SN6501

Hello, I am using ltspice software to simulate LMG1205. The model was downloaded from the non encrypted model on the official website, but I found that there is an issue with multiple errors displayed, similar to:" Questionable use of curly braces in "b_u2_abm3 u2_n14342404 0 v={if(v(u2_n14341692)>v(u2_vth),0,1)} "Error: undefined symbol in: "if([v](u2_n14341692)>v(u2_vth),0,1)"."

Is this due to a problem with the model's writing? I wish this issue coule be resolved

4 months ago

0 Lu yang 4 months ago

Prodigy 40 points

I have corrected some errors according to the errors reported, but there are still some codes that keep showing errors

0 William Moore 4 months ago in reply to Lu yang

TI__Expert 8315 points

Hey,

Thank you for your question regarding the LMG1205.

Our models are created with the intent of usage in PSpice for TI and Simplis and they can often be imported into other simulation programs like LTSpice. There are some slight differences in LTSpice and PSpice and in this case, it looks like the model was created in a way that may not be compatible with LTSpice.

Let me know if there are any further questions.

Thank you,

William Moore

0 Lu yang 4 months ago in reply to William Moore

Prodigy 40 points

Thank you, but this may be caused by my introduction of bias power supply, I use SN6501+ transformer + regulator, and I keep reporting errors.

0 William Moore 4 months ago in reply to Lu yang

TI__Expert 8315 points

Hey,

Please refer to this thread regarding using LTSpice with TI models.

LTSpice IV Usage with TI Spice Models

PSpice for TI is available for free from TI.com, so you are welcome to try to simulate with that if you would like.

Thank you,

William Moore

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LMG1205: Error in LMG1205 model simulation using LTSPICE software