Ferrite Beads in Power Rails - When to Use and When to Avoid

Explore the intricacies of using ferrite beads in power rails through this informative 42-minute video featuring expert Eric Bogatin. Delve into power distribution networks, understand inductance and its challenges, and learn about ferrite beads and their applications. Examine solutions like LDOs and filters, and discover when to use inductors in power rails. Follow along with practical examples and measurements, comparing scenarios without filters, with ferrite beads only, and with ferrite beads plus capacitors. Gain valuable insights into high-speed digital engineering and power rail design for more effective electronic systems.

The problem
Power distribution network
What is inductance and why it is a problem
What is ferrite bead
The problem for what we need beads
Solution: LDO
Solution: Filter ferrite bead
: Inductor in power rail: Yes or No?
Practical example: Setup
Measurement: No filter
Measurement: Ferrite bead only
Measurement: Ferrite bead + capacitor