I don’t recommend using a B-source for the comparator. Instead, pick the comparator.
Including the IR2112 may only reduce your simulation speed. Depending on the level of simulation you are aiming for, I typically suggest building a simulation with native components before considering complex subcircuits. They may not offer many benefits, as it is primarily an isolation gate drive model. You should ensure that your circuit is running properly before adding those subcircuit models, as if anything goes wrong, you might face a complete loss.
DC-AC Inverter - Basic (Native).qsch (20.1 KB)
This is the circuit I initially created to ensure that the modulating signal and power stage appear satisfactory.
DC-AC Inverter - Basic (IR2112).qsch (47.1 KB)
This is the circuit with the IR2112. Using net labels for a clear schematic (prevent many wires) can aid in troubleshooting.
