Ancestors

Written by jaseg on 2025-01-16 at 11:02

With @sad_electronics and others discussing funky switching regulator circuits in another thread, I was reminded of something I’ve been wanting to try for a while now: Take a small microcontroller such as STM32G030 and make it a switching regulator with as few external components as possible.

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Written by jaseg on 2025-01-16 at 11:03

I know that other people have done this before and that there are manufacturer application notes on this because it has legitimate applications in high-power converters that need complex, custom control loops. I still kind of want to try it myself.

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Toot

Written by jaseg on 2025-01-16 at 11:05

This idea has a similar vibe to @janamarie deciding to use an STM32 as an IO expander in a thread last weekend. It would be a neat challenge to take a schematic and just see if you can replace every chip with a microcontroller somehow 🤣

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Descendants

Written by Jana on 2025-01-16 at 11:13

@jaseg I've used STM32's before as switching regulators 😬 (actually my first STM32 project was all about this). I can highly recommend to look at their HRTIM, up 5.6GHz "clock" with 16bit timer depth and good analog peripheral interconnect allows for >Mhz PWM output with a fairly high resolution, current and voltage measurement and control, and even overcurrent break inputs

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