If no one can answer definitively, remove and check the value of the corresponding capacitors on the other ICs.
Nothing was connected but I have a 10 ohm resistor out by the output and the fets are out for those channels. Didn’t know if that made a difference
Do you have the 10 ohm resistor out for all ICs?
One reason I'm curious is that the 20957 does not use pin 12. The 2092 has the same number of pins and uses a similar value capacitor between pins 10 and 12. Look up the file iraudamp9 - IRS2092S.pdf in the Semiconductor Datasheets folder and go to page 29. You'll see what I'm referring to.
One reason I'm curious is that the 20957 does not use pin 12. The 2092 has the same number of pins and uses a similar value capacitor between pins 10 and 12. Look up the file iraudamp9 - IRS2092S.pdf in the Semiconductor Datasheets folder and go to page 29. You'll see what I'm referring to.
Just above the Class D - Type 3 in the directory, there is a page named Switch-Mode Drivers - The Basics. Go to item 20 (Mystery ICs) on that page. Then follow the link to the Driver IC Characteristics page.
That capacitor should have a connection to two pins on that IC. Look up the page I previously recommended or the datasheet. You have both.