How Buck, Boost & Buck-Boost DC-DC Converters Work

It can be argued that all power electronic converter topologies can be derived from these three fundamental DC-DCs, so lets take a look at how they work!

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What happens when:
0:00 Introduction
0:55 Why switching is so efficient
1:27 Pulse Width Modulation (PWM)
1:45 JLCPCB
2:25 Energy storage (capacitors & inductors)
3:38 Using inductors to store energy
4:47 Three fundamental topologies
5:35 Buck-boost converter
6:39 Isolated buck-boost converter (flyback)
7:01 Boost converter
7:44 Isolated boost converter?
7:54 Buck converter
10:18 Power density comparison
10:30 Isolated buck converter (forward)
10:45 Continuous current
11:59 How do we actually "pivot" the inductor?
13:26 Benefits of synchronous rectification (2x MOSFETs)
14:12 Does the theory hold up? (live demo)
15:36 Output voltage equations
16:06 How to design these converters? (next video)
16:16 Outro

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