Practical examples to show what decoupling capacitors do. Explained by Eric Bogatin.

Agenda
00:00 What is this video about
02:06 The schematic
14:44 The board / circuit
22:03 Example: Long rise time
26:48 2us rise time, no decoupling capacitor
29:46 Fast rise time, no decoupling cap
34:01 Fast rise time, moving probe
35:32 Estimating decoupling capacitor value
38:49 1000uF close to circuit
41:42 1000uF far from the circuit
43:37 1uF close to the circuit
46:24 Where to place decoupling capacitor
48:38 1 vs 2 capacitors
50:04 Sometimes more is better
54:18 Conclusion
55:49 Why 100nF capacitor?
1:01:43 Why PDN Graph?

Zdroj
Robert Feranec