Hey everyone! I'm working on a personal project where I need an IC that can negotiate some non-standard voltages, like 7.2V, instead of the usual options such as 5V, 9V, 12V, or 20V. Ideally, I wouldn't want to use I2C like the FUSB302 requires. I'd love to set the desired voltages using a simple component, like a resistor. I have a concept using the FUSB302 and some microcontrollers, but I'm hoping to simplify things. By the way, I tried asking ChatGPT about this, but it wasn't very helpful!
2 Answers
It sounds like you're looking for a voltage regulator, but they typically only have fixed outputs, right? I think using USB Power Delivery (PPS) to directly request your voltage actually saves more energy than stepping down from something like 9V with an LDO. Maybe there are alternative solutions you could explore!
You might want to check out some USB PPS trigger circuits. I found one that could fit your needs—check out this project:
[https://hackaday.io/project/193933-ppstrigger-usb-pd-trigger-supercharged-with-pps](https://hackaday.io/project/193933-ppstrigger-usb-pd-trigger-supercharged-with-pps). Just keep in mind that it's out of stock on some sites, so you might have to look for alternatives or similar ICs that combine those features into one.
Thanks for the link! It seems like it aligns with my ideas, but I'm really looking for something more integrated as a single IC.
That's a good point! It could be worth looking into how to efficiently manage the power while avoiding those fixed outputs.