The TLP250 output is push-pull. The low-level output voltage is typically 0.5V at 100mA. For MOSFETs, this is fine. For IGBTs, ensure your VSS is truly 0V.
A clear, readable symbol with the LED and output driver visually separated is a hallmark of a well-designed library. tlp250 proteus library download best
Knowing your application helps me recommend the right setup for the bypass capacitor and switching frequency. Using the TLP250 Isolated MOSFET Driver - Tahmid's blog The TLP250 output is push-pull
You do not actually need to download an external library file to simulate the core function of the TLP250. The best way to use this component in Proteus is to simulate its rather than its physical package. this is fine. For IGBTs