I have a application with an embedded Jetson Nano and have a problem with DC noise.
The system is powered by 24V DC and I use a isolated DC/DC converter (CCG-30-24-05S TDK-Lambda - Board Mount Modules - Distributors, Price Comparison, and Datasheets | Octopart component search) to bring down the voltage.
The Jetson is also used to to control 24 V LED panels with. However when the Jetson is running under load doing some inference the in full power mode the LEDs start to flicker. Probably due to induced noise in the system. The problem is greater when I use a longer power cable but if I compensate the PSU to 26V to get 24V to the LEDs they still flicker so they don’t flicker due to low voltage. When the Jetson is powered on but not running inference utilizing high CPU and GPU there is no flickering.
My electronics knowledge is highly limited and I thought there might be some people in here that stumbled on similar problems? I’ve googled all day and I tried using small capacitors I had lying around but they don’t make a noticeable difference.
Would a EMC filter make a difference and should I put it on the 5V or 24V side of the circuit? I would also like to be able to dim the LEDS using PWM from the Jetson, then it would be better to put it on the 5V side?
Something like this: RSEG-2003 : Detailed Information | EMC Components - Power Line EMC Filters | TDK Product Center
Any ideas to reduce the noise would be greatly appreciated!