I am designing a 3-phase AC to 24 V DC power supply and plan to use the VIPER26K high-voltage converter (as used in the STEVAL-VP26K02F evaluation board) as the main switch-mode controller in a flyback/isolated design. The target specifications are:
Input: 3-phase AC, ~90–480 V AC
Output: 24 V DC, ~200 mA
I have reviewed the STEVAL-VP26K02F datasheet and schematic. While I believe this device family is suitable for my application, I am unable to simulate the design in LTspice due to the following issues:
The available OrCAD/PSPICE models from ST are not directly usable in LTspice.
I cannot successfully import or convert the existing model due to signing/encryption and compatibility issues.
The product page only lists PSPICE and SIMPLIS models, and I haven't found an LTspice-ready model for the VIPER26K.
My questions are:
Does ST offer a native LTspice (or compatible SPICE) model for the VIPER26K (e.g., VIPER267KDTR) that I can use for simulation?
If a direct LTspice model is unavailable, is there an official recommended method to convert the PSPICE model to LTspice, or any example schematic for simulation?
Are there any alternative models (e.g., SIMPLIS to SPICE) or generic ST power converter models that would allow design validation in LTspice before hardware testing?
Thank you for your support. Any guidance or files you can provide would be greatly appreciated.
Best regards,
Khyati
