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Hello there, i'm looking into a few buck converter solutions and was wondering which one your preferred between the two you proposed. The usb charging one (https://www.aliexpress.com/item/32923862878.html) or the one with variable out (https://www.aliexpress.com/item/32729546380.html). Currently...

awesome, thanks for the information. I'm thinking the fine for phone charging and the others for basically everything else. I see the green is the MP2315 from the pp. Do you happen to know which chip is used on the red fine?

Well got some good news and some bad news. The good is that i recieved them (both the "Fine" usb and the small green one). The bad is that i don't see a big efficiency improvement over the MP1584 stuff. It might be slightly more efficient, but since it's about half the size (on the green one)...

hmm interesting. Could be a good future upgrade to play with. QC is nice, but so device dependent that i'd rather have a more basic 5v that just works with everything. It'll be practical to have one device that just works in most applications. That being said, i'll see if the red gets all my...

i see, i've only tested dropping from 11V-13V to 5.2V since that will be my main use (0.2 is still within USB spec, but compensates for drop under load). Maybe i should get a laser temperature reader since the chip on the HW613 is hard to measure with other devices.

that explains why they're good, altough it's nice that the Red have over voltage protection. Idk if i'd trust it, but it's nice that they at least thought about it. I'll probably add a crowbar to blow the fuse if it goes over 6V, just in case it's feeling special one day. It also has input...

so far i'm using the magic finger test: if it's hot, it's about 50c or under, if it burns, it's over 60c. But looking at these might just make me upgrade.