My Raspberry Pi is going to be controlling a large number of LEDs that can draw up to ~7A max. My power supply is 12V, and I'm using a step-down switching regulator (rated for 10A) to step the 12V down to 5V. The LEDs and the Pi will both be running off of 5V. Now my question is, should I get a separate switching regulator just for the Pi? I'm worried that current spikes from the arbitrary LED use will mess with the Pi if they are both drawing 5V from the same regulator.