Hello,
I am using the PMP21516 reference design as the basis for a power supply I have created for an audio amplifier. I have so far popped 3 of the 0.075 ohm sensing resistors on the board as soon as I turn it on. As exciting as that is, I would rather it not go up in flames whenever I turn on my amp. Can anyone help me understand why?
I designed it in KiCAD and had the boards made by JLCPCB. Is there something about this design that I should know?
I added a voltage regulator coming off of the 24V rail down to 5V, but even after unsoldering that part the resistor still pops. I have attached my schematics below, just above the official schematic.
Any thoughts would be great!
Thanks,
Peter