#183

Most of our modern processors and sensors need a stable power supply of 3.3 volts. Some older chips require 5 volts. And a raspberry pi needs nearly 1 ampere while an ESP in deep sleep requires only a few microamperes. Sometimes the current consumption is quite stable, and sometimes we have big current spikes like our ESP chips during Wi-Fi transfers.
We will discuss the two different principles for control of voltage: Linear and switching (buck, boost) regulators
We will find out why linear regulators efficiency often is bad and where this fact is not significant. We also look at the thermal design and how it influences maximum current
We try to understand why switching regulators have higher efficiencies and can be built smaller for high currents or higher differences between input- and output voltage
We look at the output ripple and on other high-frequency signals and where they can hurt
We will test how the different regulators behave when your processor is in deep sleep
Finally, you should be able to make the right decision for your project
-And you should be able to do a small talk using all the buzzwords mentioned before

ERROR CORRECTION: Low Quiescent Regulator is HT7333, not HT7111. Sorry.

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