High voltage (100V) and high current (10A) boost and buck converters.
https://www.aliexpress.com/item/1005005603931865.html
https://www.aliexpress.com/item/1005005594624086.html
https://www.senliwell.com/news/267.html
https://www.aliexpress.com/item/1005005603931865.html
https://www.aliexpress.com/item/1005005594624086.html
https://www.senliwell.com/news/267.html
Hmm – it seems the chineese don't care much about numbers in their datasheets (input Vmax 90V/100V whatsoever…). With 20+ bucks they are not really on the cheap side, but capable of some power it seems. I wonder why you didn't really test the power capabilities of these devices – thats the first thing for me when i buy a new buck- or boost converter. In most cases you cant trust the marketing values and you can only use 50…60% of the stated values for a longer time without additional cooling. Also i would have loved to see converting effeciency and stability of output voltage/current on some demanding loads.
Can you make some extra video or just share in comments which way do they control feedback loop for ic to achieve digital control for volt and amps? Digital pot?
It would be interesting to see how much power you can send along a thin wire pair boosting and bucking, doing a rough calculation on losses at different voltages, seem to remember you had plans for something similar a while ago?
How can one test these buck, boost and buckboost converters longevity? It seems letting them run for weeks or months is not a real test. I could run them from a solar panel to give them on/off testing and perhaps load them with a inductive load – a fan or something….something I can setup and forget?
Aren't these just recycled older boost bucks with a few better parts, same software…
They don't make them high enough voltage or current, if they made better connections and holes to double up.. be nice..
I end up making my own as I just don't off the shelf or off the shelf value
nice knob
I wish they'd put larger input/output terminals on these things, and maybe split the positive/negative and move them apart for less short-out potential.
I wish these guys would focus on bringing some modern topologies to mass market, eg GaaN FETs, synchronous operation& rectification, much higher quality inductors. The efficiency on all these cheap modules sucks, and they focus on displays, buttons , gimmicks instead of the core functionality. I'd gladly pay the higher BOM for modern designs, it'd still be much cheaper than buying the boutique designs that pop up from engineers in Germany , etc..
Sounds like you get what you paid for, unfinished software and 4 different people writing the data sheet.
well you did boost the amount of bucks they have. 🙂