Dorhea Mt3608 Dc-Dc Step Up Boost Power Converter 2A Module Adjustable Voltage Regulator Board 2-24V To 5V-28V Output Mico Usb Compatible With Ardu Ino (Pack Of 10)

Quality is good

I received 10 boards and tested 1 of them and did not work with 4.1v input. No change in output voltage regardless of potentiometer. Tried two more boards and they are the same. The boards should work with greater than 2v but did not work. I am returning them no point of checking remaining 7 boards. After further testing none of the boards are defective. The issue is that you need to turn potentiometer at least 20~30 turns all the way both sides and at one point output voltage will increase. Turn until u hear click sound. If no change then turn opposite direction and it should work but many turns in that direction.

I had the desire to reliably control my Noctua 12V 0.6Amp fan, but when powered from the wall-mounted, socket with a USB port (5V, 3.1Amp max supply). The fan works brilliantly within the full voltage range between 5.2V-12V. I am very happy with the purchase as the unit does not heat up at all and is stone-cold even after 3h of continuous work. The pot is quite sensitive, circa 2 turns per Volt Little side note: Comments sections are really entertaining: it appears that only a few people had sufficient grasp of knowledge, that from 4.2V LiPo battery, even if you connect four of those boost units, you will not get reliable 110V AC ;) On the other hand - always choose the boost applicable to the project. Happy tinkering, guys.

I use these module in a product I sell. I need a source of 20V from the internal 12V supply. They are simple, convenient, readily available and inexpensive. So far, they have been reliable and easy to use.

I saw the copious negative reviews for these, but they were dirt cheap so I gambled anyway. I rapidly tested three modules on my bench just to see what all the fuss was about. They all worked perfectly fine. Even with 3.4V input I could take them past 20V output at moderate load. At lower voltage delta, I could push them past an amp. Yeah, voltage will sag at high loads, so adjust based on your load. Voltage was reasonably stable for a given load and pot adjustment. At certain points I could hear some switching harmonics, but that’s normal. I think people need a reality check. You want a truly constant voltage power source? You ain’t getting it from a <$1 module. Sure the listing rates these at 2A, but also use some common sense. That’s probably an intermittent maximum rating and it very much depends on how much of a step up you are asking the little device for. More realistically, put a realistic power expectation in your head and understand that you need to derate as you increase the step up. I tested 12Vin and 16Vout with 2A output and had no issues. Efficiency drops as voltage delta increases. It’s a tiny little switcher IC and there’s no heatsink. Play stupid thermal games with it and win stupid thermal prizes. You want a comprehensive datasheet with exact thermal and load ratings? Go spend more money or build your own to spec. If you don’t understand that most trimmer pots are 20 turn, don’t play with module level components. If you just want a really cheap way to step up a voltage and you have realistic power expectations based on the size of this little IC, hard to beat these.

Update: Lowered my rating to 3 star. I originally ordered a dozen in January 2023 and they worked great (original review 5 star). I ordered another dozen in Sept 2024 and the first 3 I tried didn't work. Order at your own risk, seeing other more recent reviews it appears there are some serious quality issues going on. There appears to be a few differences on the PCBs between my two orders (a new silkscreen on the back clues me in that they created new gerber files). Upon very very close inspection I notice a couple vias that are different, but there's only 6 components and this is a very simple circuit - there should have been no reason to change it. Also - from my original order there was one (pictured) where the inductor was broken when I took it out of the bag. So, ultimately, they are cheap - if you order them, order far more than you need and test them with a meter before trying to use them. Original review: Easy to and quick to use, might as well have a bunch of them handy for various projects. Extremely useful when trying to work with USB power, you can take the 5vdc from the USB and step it up to what you need to run another board if you need 9 or 12v instead. I wired it up to a usb port, tossed a voltmeter on the outputs and turned the pot. until I got the voltage I wanted. Be aware of the power limitations of your usb port of course.