I had to make my own DC-DC converter on the TPS54360 driver. But because of the driver for two cameras are very strong interference. I want to try to isolate the driver GND and design it with a track back to the ground, because I understand that my main mistake is a common Polygon of GND.
My PCBs:
+12 – Power of cams
+24 – Power of TPS54360
My result :'( :
(the TPS54360 is on when the light is on)
What else can you pay special attention to?
Best Answer
You have beat notes between the video sampling frequency and the switch reg ripple.
Add more LC filter sections.