There are a few options. I am listing them by order of cost (cheapest to most expensive)
- You can try and utilize the co-simulation feature that pspice has with Simulink. However, this interface is owned by Cadence and if they aren't recommending it to you, it might not be a good option. https://www.pspice.com/electrical-co-simulation
- You can generate hdl using hdl coder, but it is highly likely your model will require heavy modification to do that and have a fairly steep learning curve.
- A tool like virtuoso should also work with DPI C. In this case, you can export your model as C code and wrap it with DPI C interface to be useful in testbenches that tools like virtuoso have. This is a non trivial process and requires hdl coder AND hdl verifier. https://www.mathworks.com/help/hdlverifier/ug/dpi-c-generation-overview.html
