INVESTIGATING: The Capabilities of the XL6009 Boost Converter? (According to Real Life Tests!)
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- čas přidán 21. 08. 2024
- In this video, I test out the limitations of the XL6009 properly and compare my findings to the documentation. A diode on the module get's up to 106c.
the diode always dissipates a lot more and needs a lot more heat sinking than what it gets. there are two pads for the diode. you could solder a TO-220 leaded Schottky diode on those pads and heat sink it with a small heat sink. MBR745 costs $4.30 for 10 diodes.
John Conrad can you use an BY359F/1500 diode instead of the TO-220.
A heatsink is advised to keep module alive while drawing more current.
it's an amazing piece of engineering ..
You can get little heatsinks off Ebay 10 for 99p could use heat conducting glue to stick one (or part of one) on the diode
This is an old post but.. You do realize that at 1a output at 32v you are actually drawing in a bit less than 3x that amperage at the input side, right? :)
I had high hopes for this module. It gets really hot converting 4v (18650 cell) to 5v for phone charging.
If you look up the datasheet you will find that it comes in several different packages for heap dissipation. Even the largest one (MUCH bigger that this one) is rated at 55c/watt rise. It is also rated at 40V max. The didio in the board is likley something like 100c/watt (being so tiny). Also schottky diodes have a positive temp co-of, they will NOT share current evenly. The board is a BAD BAD BAD design!
Also important - you must apply a low voltage like 3V first, then adjust your OUTPUT to higher voltage than your intended INPUT. You must do this BEFORE you connect power!! These will be damaged or burn up if you apply INPUT voltages that are HIGHER than what the OUTPUT is SET for.... make sense?
Would have been great if the caps temperature was also measured. On my module the sides of the caps is also verry hot at 800 mA
Check the data sheet, but these can handle only 10 watts of power, so at 30 volts, you would only get .3A
At 15 volts, you can get .66 amps, etc... amps X volts = watts. A heat sink might give you more room...
so? can i get 24v 400mah from 5v 2amps?
@@fleeth2020 Do the math. 24*0.4=9.6w. 5v at 2a is 10w. I highly doubt it due to inefficiencies that will always be there. Now 5v at 3a this could do it.
*"It can't handle 60v @ 4Amps.."*
You're surprised that board isn't 240 Watt capable o.O ??
Heheheheh, yeah. I bought a bunch of heat sinks of varying size but 240w is asking a bit much from this thing, lol. Later in another video of this he swapped out that diode and put two on it just as a proof of concept and sure enough the heating issues went away. Weakest link is that ss diode which isn't even the right one shown on the manufacturer's data sheet for the XL6009 chip. They under did it (which is typical of the Chinese). I personally would just go on ahead and drill two holes to fit a proper through hole diode that is rated properly (say 40A which would easily fit in the upright position).
@@generalawareness101 nice, i've used this very board, and others like it in various projects over the years. They're fine for what they are, price, etc and as long as the user understands the limitations, etc
i'll have to look for that other video you mentioned, as i'd like to see what the board could do with better balanced components :)
Found it, here's the other video where he solves the diode bottleneck:
czcams.com/video/vWFLVivkTHg/video.html
@@cjjuszczak There we go that is the video I was talking about (he had yet another?). I can't post links on YT as I am banned from that due to posting replies that YT ai didn't like and posting a link to them in picture form. Banned for life.
Anyway, the best way to handle this diode issue is desolder it, as he did, but replace it with a SB560. Either slap it to the side or drill two holes into the SMD pads so it can go through a hole (depends on if you have room or not if it is currently in a box etc...). Once you migrate to that 5A 60V Schottky diode the heat issues are long gone, AND the thing is far more stable too.
@@generalawareness101 thanks for this, great stuff, and yes, CZcams is very odd in how they manage their users and features :)
@@cjjuszczak LOL, that is putting it very mildly. hehehehehe.
So basically 30watts is the boards limit.
U don't use a current limiting resistor for the led?
Max Carlin Nilsson I didn't need to because the led can allow 3 amps to pass through it before burning out. But it wasnt possible for it to burn out in this project because nowhere near 3 amps could be delivered. Antony...
If you limit the voltage, the current is automatically also limited.. Ohm's law..
What are the best diode to use to take the full ampere of the chip ?
Hi Russell, the best diode mentioned is SB560.
Antony Cartwright can you use an BY359F/1500 diode instead of the SB560 diode
@@MrMaker-pt5sw I personally would just go on ahead and drill two holes to fit a proper through hole diode that is rated properly (say 40A which would easily fit in the upright position). Something like the SB560 because it is widely available, and damn cheap. The best part is that it is through hole not that surface mount shit. Don't get me wrong sm is fine, but I just can't trust any SMD for high currents.