DROK DC Buck Converter, DC to DC Step Down Power Supply Module 10V-65V to 0-60V 0-12A Adjustable Voltage Regulator Transformer Board with LED Display for Volt Reducer

Pretty easy to use just take your time with the instructions. I use it to test other electronics and charge lithium batteries. I am using this with a power brick at night or on cloudy days and a 37.7voc 250watt solar panel. Works great but unhook battery before turning converter off unless using a properly sized blocking diode for protection. I don't think it's needed on this but I use it anyways if I'm going to be away from it while using solar. Other buck and also boost converters I have do not have diode protection. Other than that very stable voltage and current from this unit. Update 9-11-24. . . Over 2.5 years later still works perfectly. Just use the buck converter within its specs and use a diode on the output when charging a battery. I also purchased the 96v to 12v 12 amp model to use higher solar input and charge higher voltage batteries. 72v solar coming in to charge 48v and 52v ebike batteries off grid. Also perfect. Works just fine and with plenty of adjustment. Both units have been fairly accurate so no worries there. Good products.

It works to power a PC and 2 routers but if you even begin to hit 12 amps it shuts down for a second. So be cautious of your initial surge current.

The UART port (4800b) on the bottom-right enables digital setting from a computer or microcontroller, which makes this the cheap and easy foundation of a custom bench power supply. It's not perfect in terms of ripple/noise, low output capacitance, or CC mode stability (done in software), but it works well for hobby-level and utility applications that don't need linear smoothness or mv/ma precision. Fan is temp/current controlled, which is good since it's slightly noisy for my taste when sitting on the workbench. If you want a decent programmable DIY bench PSU, is a solid head-start for a powerful SMPS (add more precise metering, an MCU like the ESP32, and a web interface).

I use this in constant current mode and it has worked perfectly with excellent output control (i.e. maintaining a steady current even under rapidly changing conditions). My one tiny problem is this board has a ridiculous inrush current when it initially connects to power. I have a fuse ahead of it which I also use to switch it off as needed. There is a giant, loud arc when I plug the fuse back in. I'm adding an inrush current limiter so connecting it to power isn't as dramatic. Other than that tiny quibble, it does exactly what I need it to with no caveats or concerns so I basically never think about it.

I have to confess, I was truly saddened as I was going over the documentation I received with this DROK DC Buck Converter. ( the second one I purchased.) One of its most impressive and powerful features isn't even mentioned! Pay attention DROK... My rating above is mostly a reflection of the second one I bought. I'll be hoping for better on the third, which is on the way. While this device touts a pretty impressive array of features, offering finite control for voltage and current settings, some safety features like the ability to turn on or off the display, lock or unlock the input controls, there's storage for programed current and voltage values or other settings that can be recalled when needed, and more. After I got up to speed on most of what it had to offer, I was pretty excited. I found it to be programmable, remotely controllable, have pretty stable output and the build quality was pretty solid. One of its best features however, isn't even mentioned and that's the device's ability to be remotely controlled via UART! It's one of this devices finest and most powerful features and the main reason I chose it for my projects. I actually went so far as to write a program in micropython to take advantage of the ability to remote control the device. My biggest let down to date has been that I'm only hitting about 50% with the things as regards the UART actually functioning. Has me wondering if they've dropped support for the UART... Or is it possible that QC is that poor? I'm hoping DROK can be persuaded to continue supporting the UART connectivity and control, if it's the former. Without it, it's only half the device it was. Wow I have to admit that that 50% is directly related to the fact I've only purchased 2, it's still 50% and that's not good at the moment. We'll see what happens with #3 :-) Beyond that, if the UART is not functional, and if push button control is your thing... and you don't mind tending to it in that manner... from this point it seems to be a pretty solid and stable supply. I may be providing more commentary on this DROK Buck Converter as I continue to work with it and time permits. Update 4/25/24 Now a 33% success rate... As I mentioned previously, I have written a program to communicate with this buck converter that works flawlessly with the first one I got. That said, and based on the fact I do have that much experience with them, either the last two I have gotten have been defective from the manufacturer or something has drastically changed. In the first case then quality control really becomes an issue, and that's too bad because these have the potential to be some incredibly useful and powerful supplies. In the case of the latter, that may be just as bad, because if something has changed in the requirements for the communication protocols over the UART then they haven't bothered to share it with anyone at least not on Amazon. That said, I did try to contact someone, a representative for DROK, via Amazon but that seems like a non starter from the gate. So I will try to call them before I actually do a return and hopefully maybe get to the bottom of this . My project is highly reliant on the remote control of this device over the UART port So I'm really hoping to find a solution . I will keep you guys posted but as of yet I do not see a solution forthcoming . Let's hope somebody from Amazon or DROK will step up to the plate and say hey here's what's going on , that would be wonderful . Not to mention, I would continue to use their products and I have to make several of these, lol

GOOD CONVERTER

Deduct 1 star for no obvious way to set the "automatic power up" to on. The unit requires human interaction to turn on unless you do some menu diving and searching online. Using for my son's Power Wheels Jeep to convert 20V drill battery to 12V. I set the buck converter to 13.5VDC at 8.5A. The unit is rated for 12A, but I doubt it'll actually handle that much current for long. The CC setting causes the Jeep to drag on acceleration, but kicks into high gear once the the wheels start turning. It will bog down in tall grass or steep hills, working on a solution for that.

After wasting a lot of time trying to get a competitor's CC-CV buck regulator to work [had to return twice] I ordered this one. I am not exaggerating when I say I had it up and running in less than 60 seconds, and I did a visual inspection and was very careful to set it up per the instructions, made the connections (input and output) and voila! it worked perfectly. I am using this DC:DC converter to charge a 4S LiFEPO4 battery (74 Amp Hours) that I use to operate my ham radio gear (approx 100W transmit output. The supply for the input to this converter is a Lithium Ion (16.5V when fully charged) solar battery. The charge is at 10A.

Parfait pour mes besoins. Fonctionne très bien.

Bueno