What power supply for 24 leds?

[antonR]

Hello,


I want to make a 24 led fixture:
- 10 Cree XP-G R5 5 W cool white
- 10 Cree XT-E Royal blue
- 4 SeniLeds Violet UV 410-420nm


I use 3x Mean Well LDD-700HW dimmable driver.


I got at home 2 power supply's:

- 36 V/DC 4.3 A,150W

- 36 V/DC 3 A, 100W

(Living in Europe)

My question: will one of those power supply's suite the 24 led fixture?


Hope i gave you enough informatie.


Greetz,

Anton

 

[perkint]

Both those power supplies have enough grunt and your strings of 10 XPG and XTE will both be about 31V then add about 3V for the LDDs. That means your 36V supplies are more or less ideal

Tim

 

[oreo57]

Hello,


I want to make a 24 led fixture:
- 10 Cree XP-G R5 5 W cool white
- 10 Cree XT-E Royal blue
- 4 SeniLeds Violet UV 410-420nm


I use 3x Mean Well LDD-700HW dimmable driver.


I got at home 2 power supply's:

- 36 V/DC 4.3 A,150W

- 36 V/DC 3 A, 100W

(Living in Europe)

My question: will one of those power supply's suite the 24 led fixture?


Hope i gave you enough informatie.


Greetz,

Anton

Wattage (est. from data sheets)
XT-E) 10 x (3.06 x .7) = 21.42W
Semi) 4 x (3.5 x .7)= 9.8W
XP-G) 10 x (3.05 x.7)= 21.35W

you won't get near 5W for the xp-g w/ out going to a 1500mA driver..
I'd at least go 1000mA ..

 

[antonR]

Thank you for the comments.
And yhea 1000mA is even possible 2 ^^

 

[perkint]

No reason why you can't run both the XPG and XTEs at 1A...

But, keep an eye on the total fV of a string of 10. If it goes to over 33V you may not be able to drive them on one string with a 36V supply (unless you can adjust the voltage up a bit on the supply).

Tim

 

[oreo57]

No reason why you can't run both the XPG and XTEs at 1A...

But, keep an eye on the total fV of a string of 10. If it goes to over 33V you may not be able to drive them on one string with a 36V supply (unless you can adjust the voltage up a bit on the supply).

Tim

Neither seem to do that @1000mA.. XP-G is 3.15V XTE 3.25 approx.