The Case for Split Ground Planes

Some experts say you should never use a split ground plane. Others say you should use a split ground plane to control noise. When is the right time to split a ground plane? We will explore the... [more]

Power Delivery System Design

With the advent of ICs with multiple power rails at very high currents, the design of the power delivery system in a modern product is often more difficult than routing the PCB to ensure good signal... [more]

Does a Differential Pair Need a Return Plane?

A differential pair is any two transmission lines. When each transmission line has a return plane, its pretty clear how the differential impedance is related to the geometry. But what if there is no... [more]

PCB Design of Power Distribution and Decoupling

Power distribution in PCBs is the foundation around which all things work in the circuit. If this is not designed correctly, the entire circuit is at risk from noise and signal integrity issues, to... [more]