Best practices in multiple CPU/FPGA PCBs - power design

[CptRambler]

Hello. I'd like to ask a little question . I've done design for some "small" boards mainly consists of one CPU (soc), MCU or FPGA. Power design for them was quite simple a straight. Now I'm working on a board, which have FPGA (spartan-6) and Freescale/NXP iMX6 SoC on the same PCB. I've never done power design for two chips on one PCB. I'd like to ask what are the best practices/steps in power rail and power design at all in that complex projects. For example. Power sequencing. How is it possible to manage that with multiple different CPUs/FPGAs, etc. Btw, I don't want anyone to design it for me of course . Maybe it's a dumb question .

Thanks.

[james_s]

Take a look at some existing commercial products and see how it's done. For what you're doing I don't think you'll need power sequencing, just lots of strategically placed decoupling capacitors. If you're using a multilayer board you could have power and ground planes and then local regulators near the main ICs to get whatever other voltages they require.