Robert Taylor from TI highlights some pointers when thinking through your power supply layouts, for EE Times:
Power supply layout is a very tricky subject. The first step is to identify how the currents flow in the power supply, then find and minimize the high-frequency loops. Next use both ground and power planes to connect components in a very low impedance manner. Make sure the planes used are wide enough to carry the design current. Make high-frequency switching nodes as small as possible to reduce any chance of noise coupled to other signals. It is also good practice to use a large continuous ground plane with many vias to connect grounds of different components. If you follow this list of tips and rules, you should be successful at designing your next power supply.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.