A similar question has been asked, but I wanted to get to a more fundamental understanding of when, in general, power supply pumping occurs in a class D amplifier.
In general terms "power supply pumping" is the return of energy from a load to a power supply via output switches so that the power supply is forced to accept energy via an unintended path.
This quote was from an answer that was given before. How is the energy being supplied back? Is it mainly due to the inductive voltage spikes from the abrupt current switches? If I was driving something that was not a speaker, and say, purely resistive, would this still happen, or is it irrespective of the load type?
I was told that using a full bridge output (4 driving FETs) would help alleviate this problem versus using just a half bridge topology, but I do not see how. Any links to outside reading would be useful.
EDIT: I don’t have a specific schematic issue, I just wanted to know more about this specific issue that occurs.