I have a kind of an open-ended question.
If I'm designing a board with a buck converter and have picked out my peripherals, and say for example I want to run my CAN FD interface at 1MHz baud and maybe a SPI signal at 1MHz, and I am now looking at power supply design.
I am looking at a buck switching regulator which has a switching frequency at 1.4MHz. Is there any big EMI issues with having the switching frequency so close to the frequency of my other signals running through the board? Should I aim at either a higher or lower frequency?
Pretty open-ended question, but I never really thought of it until I ran into it.