Sharing this because I just shared with a friend. This is an application note from Microchip from 2007!! that I found to be a great explanation of a lot of the switch mode power supply (SMPS) topologies that you run into. As a hobbyist, mostly you're probably dealing with buck, boost, and buck-boost. But it digs into magnetics, selection process, etc.

https://ww1.microchip.com/downloads/en/appnotes/01114a.pdf

@petrillic if you want a deeper dive, https://www.amazon.com/Switching-Power-Supply-Design-3rd/dp/0071482725

You know it's a good textbook when they're still publishing new updated editions despite most (all?) of the original authors being deceased

Switching Power Supply Design, 3rd Ed.: Pressman, Abraham I., Billings, Keith, Morey, Taylor: 9780071482721: Amazon.com: Books

Switching Power Supply Design, 3rd Ed. [Pressman, Abraham I., Billings, Keith, Morey, Taylor] on Amazon.com. *FREE* shipping on qualifying offers. Switching Power Supply Design, 3rd Ed.

@azonenberg @petrillic THREE HUNDRED DOLLARS?!
@jpm https://ebay.us/m/nbK0M5 and maybe someone local will offer to forward although because of the Everything, postage in and out of the US is fucked @azonenberg @petrillic
Switching Power Supply Design, 3rd Ed. 9780071482721 | eBay Australia

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@voltagex @jpm @azonenberg FWIW, it looks like second editions are relatively cheap to come by.
@voltagex @jpm @azonenberg but it does appear the 3rd edition is about 50% longer.