DC-DC output voltage dropping due to RF noise

[biswaIITH]

We are facing an issue where the output of the DC-DC(12V) drops to 1-2 V for few milliseconds when an SOM module tries connecting with the cloud. The DC-DC is designed using LM5146 IC from texas instruments

This is mostly due to RF noise we suspect.
Can anyone suggest any shielding technique to prevent the above?

 

[biswaIITH]

Does anyone see any problems with this Feedback gain and slope?
I would significantly reduce the 24k to boost error-correction gain in the <1ms pulse range.

View attachment 188407

After Changing the R11 to 5.1K & R18 to 18K. The voltage drop issue is not happening. However, we have been continuously testing the board for the last 2 days.Will update further

 

[D.A.(Tony)Stewart]

After Changing the R11 to 5.1K & R18 to 18K. The voltage drop issue is not happening. However, we have been continuously testing the board for the last 2 days.Will update further

Thanks for confirming my recommendation.

You can test a step load in both directions, on/off for over/undershoot and then define your performance specs you want to guarantee.