Short-burst powersupply
It is not specified in the question what the average current draw is, but let's assume 2A is sufficient.

It is good practice, if not essential, to add proper power supply decoupling to your circuit and as close to the load as possible. This is important for both the microcontroller as for the LED-strip/driver combination. For your average microcontroller a 100nF ceramic cap will do, but for the LED's you'll probably need more. Capacitor sizing depends on the LED-strip load.

Take a look at this answer for more details on decoupling capacitors.