re the DPS5015, which I ve noticed there is not much referene to!
I have riged up a DPS5015, and it is working ok, loaded at 3 amps.
But, the fan is not moving.
My question, which , so far, no one has been able to answer, is “should the fan work all the time, or only at a certain temperature”?
I just spotted this DPH5005. Buck/Boost and up to 10A on the input side. Looks like a nice unit but I honestly wish it was even more powerful and could go up to 80vdc on the output to drive some of the new ~72vdc COBs.
I may still get one to use with some of my 36-40v COBs.
The more you boost voltage the less current it can output and the lower the efficiency is.
Making it a boost driver would overcomplicate things and just make it worse.
Get a good 80V power supply and just use the DPS.
Lets be honest here. This is a flashlight forum and you’re suggesting that I use something that requires AC? If I wanted to do that, I could just buy a MeanWell HBG series LED driver/PSU.
The DPH series might be inefficient but it is potentially portable and it is flexible enough that I should be able to drive most any COB with it for testing.
These DP power supplies are meant to be bench top power supplies.
If you want to build some giant flashlight with this instead of a regular LED driver then you just need to have enough batteries to reach 80V+ or use a DC to DC power supply. It doesn’t have to be AC. The DPS has DC input.
I looked at some of those boost converters and I could add a volt/amp/power meter to the output but the DPH is pretty close and a much nicer device.
In the end, I’m probably going to design my own driver since no one is crazy enough to make and sell a 300w buck/boost LED driver board.
I’d like to run my light on 6s lipo since it’s a convenient and readily available size. I may end up going 12s but I’d like to only need a single battery pack for convenience. Sure it won’t be all that efficient but this isn’t going to be a small light. The heatsink for the COB alone will likely be at least a kilogram. The whole thing may end up being 5kg. Also, I have a pile of 6s16AH packs so….
Maybe you should try thinking about WHY nobody has made one, if it really is because nobody is “crazy enough” or because “it doesn’t work”.
You might want to do some research on boost driver efficiency, or your “crazy” 300W boost driver will barely light up your COB.
for efficiency, YES, you are right
for input , our products request DC, because we only design DC -DC, we have designed them better, you only add a simple AC-DC, that’s ok,.
so you don’t need to spend lots money to buy expensive AC-DC power supply