You guys really helped me out on my buck converter circuit, so I thank you guys for your help. The circuit works, but now I face a problem. It works when there's no load connected, outputting positive and negative voltages.
However, the issue is when I add a cable with a load at the end, a small load that draws around 400 mA. Turning on my bench power supply at 12 volts, it goes into current limiting mode. Something is drawing too much current.
I tried reducing my input capacitors from 220uF to 4.7 uF on both regulators, and I added an NTC thermister in between my bench power supply and my board at the voltage input. I also increased my slow-start capacitors to 10 nF each, but no matter what I do, my bench supply goes into current limiting mode. This only happens when I power up my board with a load attached.
What else can I do to reduce the in-rush current? Would increasing the resistance at the current adjust pin of each regulator help? If it helps, my bench supply is a single supply bench supply which can go up to 3 amps at the output.