I finished the second revision of my class D amplifier (schematic) but there is a lot of MOSFET heating. If I remove the 0.1uF caps from the power supply there is less heating but more overshoot.
[IMGDEAD]http://www.siliconlite.com/images/AMP/Board-A.jpg[/IMGDEAD]
High and Low side gate signals with power supply caps:
[IMGDEAD]http://www.siliconlite.com/images/AMP/gates_w_cap.jpg[/IMGDEAD]
High and Low side gate signals without power supply caps:
[IMGDEAD]http://www.siliconlite.com/images/AMP/gates_wo_cap.jpg[/IMGDEAD]
There is also a good deal of hissing when the input is muted (this was not in revision 1).
[IMGDEAD]http://www.siliconlite.com/images/AMP/Board-A.jpg[/IMGDEAD]
High and Low side gate signals with power supply caps:
[IMGDEAD]http://www.siliconlite.com/images/AMP/gates_w_cap.jpg[/IMGDEAD]
High and Low side gate signals without power supply caps:
[IMGDEAD]http://www.siliconlite.com/images/AMP/gates_wo_cap.jpg[/IMGDEAD]
There is also a good deal of hissing when the input is muted (this was not in revision 1).