DC-DC Buck Converter 6V-24V 12V/24V to 5V 3A USB Output Module

If you need to add a USB charger to a readily available source of power from 6 to 24 VDC, it works well for charging modern electronics using their own USB charging cables. It is not insulated electrically, so, beware of what may come in contact with it. It needs free air (space) for cooling, so, do not just tape it up.My charging station comes off of a UPS (uninterruptable power supply) battery with lots of Amperes and Ampere/hours - so use a fuse to prevent a fire in case of a short circuit. I use up to 6 different chargers or devices at a time, aside from my computer.

I put three of these into a small plastic junction box I stuck to the top of my Tacoma's windshield for hard wired DashCam, GoPro, and any other USB accessory power I want on the windshield. They're wired in parallel to a 10amp fuse then go directly to the battery positive. Ground is bolted to a common ground behind the driver's side footwell. The small red LED is bright enough that it lights up the individual ports on the box so I know it's powered. The only reason I rated a four was because the inputs aren't labeled and there isn't any good way to mount them aside from 3M emblem tape or glue. The backside of the board could have had a + and - sign added. There is white text on that side and the area around the pads is clear. At least they included a photo with labels in the listing. If these hold up for months without burning out, I'll raise my review to five stars. I'll also buy many more for other projects.

Superb Power Supply. I use it in aircraft to convert 24Vdc to 5VDC for charging iPad based Electronic Flight Bag (EFB). Tried a number of alternatives and in each case they would charge anything except Apple products. This supply handles the Apple interface protocol flawlessly. Additionally it is the smallest power supply for this purpose that I have encounter so far.Power supply is located in the housing below the iPad in the attached picture. The housing was printed in ABS using XYZprinting Da Vinci Pro 1.0 3D printer.

Charges iPad just fine with installed heatsink  Cosmos ® 20 PCS mini Aluminum Chips VGA RAM Cooling Heatsinks heat sink cooler + Cosmos Cable Tie Makes a huge amount of RF noise however, so don't plan on using a radio around it. Even seems to effect cell phone reception.

This small, yet wonderful thing is amazing. It can charge my iPad as well.I use this for my solar. In put is 12v and didnt matter to it.The price is quite good, although very small. You have to make a housing for it.This is a nice DIY only if you know how to build itIt has a nice packaging and it works as simple as it is.

I thought of giving this 4 stars because of not printing input polarity on the silk screen. But, measuring it was easy, and whe looking at the output on a scope, it's pretty well filtered.In fact, for "power supply" purposes it's over-filtered! 50% step recovery time is about 40-60 microseconds, which is something like 20 cycles of the buck controller.Note that, if you're drawing 3 Amps out of this thing, you will need heavy duty USB cables that aren't too long, else the cable itself will cause significant voltage drop, and may even be warming up a little.Attaching a picture of step recovery from a 1 us 50% voltage drop pulse. As you can see, it doesn't ring at all on recovery, but it takes a while to actually come back.

Ordered 2 of of these, the first arrived in a couple days and functions fine, the second arrived from China after 2 weeks. Both sold by seller 'ailavi' Not sure if both are the same item given the difference in delivery time, but both look the same. No instructions or polarity markings on the board but otherwise seems solid.Edit: I had misdiagnosed originally as DOA, both units are in fact working.

this thing is cool. I have an old 6 volt motorcycle that I keep a lojack GPS in. I wired this up wrapped it in tape and it charges with no issues. Thanks.

Very good item. I used it power charging from 12 volt battery. It is quite enough to charging android phone. Same ampere and voltage found as original phone charger. Try it you too.

Output voltage is constant but current will fluctuate ..If ur input voltage is 6-15v it then current will be max 1.5 - 1.7 amp24volt is good enough to get 2- 3 amps