In-Circuit Design: Power Integrity-Power Distribution Network

Though signals tend to be the focus of impedance issues, the power distribution network (PDN) on the board is just as susceptible to impedance. The PCB layer stack up is a capacitor all its own and with the addition of bypass capacitors and inductors on the board, the ability to distribute power to avoid power starvation or to reduce ripple becomes an integral part of the design.

Topics include:

  • The power distribution network and how impedances interrupt and starve components of the power they require.
  • Dive deeper into the impedances that are caused by capacitors and inductors, and more importantly, how they interact with each other.
  • How to manage the impedance by a careful selection of capacitors.

We will use the ICD PDN Planner tool to visually see the results as we present.

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