Search results

Heheh. If it makes you feel better, I know a dude who is running 4 of them on that exact driver and they work fine. At full bore, his are pulling 142V total (max voltage is 143V for that driver!). You would actually want them to run a bit hot because it will lower the forward voltage across...

Just updated the spreadsheet. - Reentered COB data from manufacturer config tools to reflect higher Tc (and, as a result, lower voltages) at higher levels of current. The Tc referenced is now displayed below the inputs. - Added links to driver data sheets - Added a "Power Total" readout for...

Ah, I see. Good idea about the links.

Thanks. Can you elaborate? What other info would you like to see?

Thanks. I will update the higher currents accordingly.

I used the Cree PCT, Citi V5 simulator, and Vero simulator. When I was gathering my voltage data, I just set all the Tc to 50 though, regardless of current, and am thinking I should set the Tc for higher current values to a higher temperature in order to get more accurate voltage readings...

Thanks! I'm finding that I'll need to use a different case temperature for higher currents (right now it's all based off of 50 deg. C) because on configurations that are really close to the minimum or maximum voltage of certain drivers, the tool might disqualify a driver when it shouldn't...

Hey all, I pulled some data from the product simulation tools of a few different COB manufacturers and made up a little spreadsheet that lets you pick a COB, enter quantity, and select a drive current, and it highlights the HLG-C drivers that suit your choices. Let me know what you think...

Simple answer is that a CV+CC driver will run in CC mode when rated max current is exceeded, and CV mode at any level of current less than rated max. The only part of your answer Im not sure about is where you say "CV when >36V is required to pull 5.2A through the whole circuit". With this...

Sorry - I didn't clue in that it was intended for him in particular.

If you have a low voltage CC driver, nothing stops you. I have 2 Vero 18s running in parallel on a single 1400mA CC driver right now that is rated to do its current between 9V and 42V. I hooked them up this way just as an experiment. What I found is that the driver will still output its rated...

I might be misunderstanding what you're asking, but I'll share how I think it works. I'm hesitant to even try to answer since I've been pouring over your "Math Behind" thread the past couple days to try and understand all the info that YOU have provided! Anyway, here goes: If you're using a...

It only functions as CC once you pull max current from it. Up until that point, it is working as CV and will dish out current as required, while holding voltage steady.

In this example, I think it would maintain a constant voltage of 50V and deliver however much current your load required, up until your load was drawing 1,000mA, where it would then switch to CC mode and hold that current steady.

Well, if you're regulating the voltage, it will only pull however much current its particular I-V curve dictates at said voltage.

You're strictly talking about running a system where you have more current draw than the rated output of the driver, correct? The way I understand it is if your COBs were pulling less than the max rated current, it would run in CV mode. Once you exceed the rated current, it would then stabilize...

Check this out from the Mean Well site

I have not yet played with one of these CV+CC drivers, though I would really like to get one, just to see how they actually work. According to the data sheet, it operates as a constant voltage driver (and there is a pot to adjust output voltage from 33V-40V on the "A" type, as well as one to...