Overview
Dive into a comprehensive video lecture by Eric Bogatin on selecting and positioning decoupling capacitors in electronic circuits. Learn through practical examples that demonstrate the function and importance of decoupling capacitors. Explore topics such as schematic design, circuit board layout, rise time effects, capacitor value estimation, and optimal placement strategies. Gain insights into the impact of capacitor proximity, quantity, and value on circuit performance. Understand the reasoning behind common practices like using 100nF capacitors and interpreting PDN graphs. Benefit from Bogatin's expertise in signal integrity and PCB design to enhance your electronic prototyping and design skills.
Syllabus
What is this video about
The schematic
The board / circuit
Example: Long rise time
2us rise time, no decoupling capacitor
Fast rise time, no decoupling cap
Fast rise time, moving probe
Estimating decoupling capacitor value
1000uF close to circuit
1000uF far from the circuit
1uF close to the circuit
Where to place decoupling capacitor
1 vs 2 capacitors
Sometimes more is better
Conclusion
Why 100nF capacitor?
Why PDN Graph?
Taught by
Robert Feranec