Hi I want to basic DC-DC converter model in ltspice. I tried to hierarchy schematic circuit. Problem I have is unknown subcircuit called. How can I fix it?

 

hi 563,
I have just tried your asc files.
If the sub circuit does not function on self test, it will not work in the final asc simulation.
What is the purpose of the simulation.?
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hi 563,
This is a modified circuit, it simulates OK.
Could you explain how you expect the circuit to function.?
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I have new error






actually, I want the circuit to work with few parameters
Vin_Max Vin_Min Vo efficiency

 

like this
https://www.bee-tech.info/simple-model-for-spice/dcdc-converter-model/

 

hi,
You need to create a sub circuit of a regular DC to DC converter, for the hierarchical model.
This video will give you an idea.

The video you posted requires a .lib file and the guy wants to charge $90.!!! he must be joking.

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See