Buying a dimmable power supply

[firstoption]

Good day to all,
Please I Need your guide and support before buying this dimmable power supply:
https://www.osram.com/osram_com/prod...ent-dimmable/optotronic-intelligent/index.jsp
I have a PCB that has a cluster of 120 Leds on it with Series-Parallel connection.(A cluster is made of 5 Leds all connected in parallel).12 clusters(60 Leds)are then connected in series,this 12 cluster in series is now connected in parallel to another 12 clusters which is also in series.According to my calculation the PCB requires 200mA and 38.4V-43V( this is based on this series -parallel arrangement and the datasheet of the Led ):
The Problem i am having is that the Dimmable Power Supply I finaly saw after so many search on the Internet has an Output Voltage range of 12V-54V and constant Output current of 250mA.
My question is that,can i still use this power supply to power my PCB considering the fact that the power supply Output voltage range is up to 54V(more than the 43V that i need.)and at the same time it has a constant Output current of 250mA(although the absolute Maximum current Rating of the Led is 30mA according to the datasheet.-this will give me 300mA based on my Led Arrangement.)
Your Support and guide will be highly appreciated in this Situation.
Best regards.
NOTE:I have only the Leds on the PCB,there are no other components.So the 43V and 200mA will be consumed only by the Leds.A copy of the Led datasheet is attached to this thread.

 

[chuckey]

The link you give does not work for me, it says that it is out of date. One way is that as the load on the power supply increases, the current it delivers increase until it hits 250mA which is maintained, but its output voltage falls. Or it could actually deliver a constant 250 mA into a load providing the load dropped between 12 and 54V. I think the second example is more likely. If you used this it would crank up its output voltage to try to get 250 mA through your LEDs and overload them.
Frank

 

[weblinks]

The link you give does not work for me, it says that it is out of date. One way is that as the load on the power supply increases, the current it delivers increase until it hits 250mA which is maintained, but its output voltage falls.