I am building a class d amp circuit with base design from Great Scott's Class D amp which is found here. I am trying to build and simulate the circuit in LTSpice with difference being I won't be using MOSFET Driver IC and will be inverting the signal and feeding it to another half bridge to make a full bridge amplifier.
Here is the Circuit and simulation files:- https://drive.google.com/drive/folders/1_B0tQIh58_niOk3M4CdICHCKTr6wPS08?usp=sharing
I am experiencing some wierd oscillation at the start of the circuit for a few milli-seconds. Can anyone point out the reason and/or a fix. Will the circuit get damaged if I build it as it is?
The oscillation occurs on both of the half bridge after passing through lc filter. The blue line is the load resistor current. (In reality, the current would be half tho. I am using 1 ohm load in design while in reality I have 2 ohm subwoofer)
Also note, the circuit will only be used for sub frequencies, so don't point out that voice will get lower as frequency increases and also, it gets distorted at higher frequencies.