Comparing an efficiency of two DC-DC buck voltage regulators. The first one is LM2596S producing 5V and the second one is LMR51430 producing 3.3V. The second one is about more than a decade younger design and is about 40% more efficient.
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0:00 - intro
0:36 - measure voltage
1:23 - test theory
2:54 - PCBWay
3:49 - test results