Hello I'm new in the EasyEDA world and also never worked before with LTspice so please if I say something wrong, I would ask for your indulgence. My goal is to build some PCB boards for my startup company. But I would like to test tose circuts before to check if my ideas work or not. For example, one part of my PCB board includes a step down converter from 12 to 5 volt DC. I want to use a XL2596S converter. For test reasons I've build the simple circiut, which I found in the documentation of this converter. [https://datasheet\.lcsc\.com/lcsc/1811021340\_XLSEMI\-XL2596S\-5\-0E1\_C74190\.pdf](https://datasheet.lcsc.com/lcsc/1811021340_XLSEMI-XL2596S-5-0E1_C74190.pdf) [https://lcsc\.com/product\-detail/DC\-DC\-Converters\_XLSEMI\-XL2596S\-5\-0E1\_C74190\.html](https://lcsc.com/product-detail/DC-DC-Converters_XLSEMI-XL2596S-5-0E1_C74190.html) But if I try to simulate this, I allways get an error like on the picture.  So is it not possible to test all components, only those one who are available in the LTspice libary? Or is there another solution to test my circuit, excatly how I made it? Cheers Oli <br> <br>