What this circuit does is that it takes a +/-15V as its input and generates an output from 12V to 30V at currents up to 1/2 Amps. The function of the circuit is to driver a heating element. I will send that photo as well.
The problem is we have a very low noise, precision analog board in the same enclosure and it is getting contaminated from the noise and distortion that is being generated by this switcher. I inherited the design and when the bucks output is loaded we see lots of distortion. Let me see if I can find a photo. Even if I vary the input and output capacitance the noise/distortion is there. There are other DC to DC but the main noise culprit is the LM part.
This is already on the PCB so would like to fix it so that it is less noisy. Thanks and looking forward to dialog. I was a TI FAE for 12 years out of San Diego (MGTS)