NoFucks2Give
Well-Known Member
I made an incorrect assumption regarding the Signa supply. It is a constant voltage supply NOT constant current. Why it is labeled an LED Driver I do not know.
That gets a little tricky. The HLG is a constant current driver. These Boost converters you picked are constant voltage.
You would need a Boost constant current driver that would be better driven by the Signa.
A Buck step down constant current driver is more efficient unless the cost of electricity is not a concern.
What I would do is use 18V CoBs and pair each with a Mean Well LDD-H, step down driver.
They cost $3.49 here: http://www.ledsupply.com/led-drivers/mean-well-ldd-l-series-cc-step-down-mode
You would power 3-4 of the LDDs with a Signa.
The Bridgelux EB strip is not a horrible idea. Except max forward voltage is greater than 24V.
The only other viable solution would be to buy a higher voltage supply. But you still have the same problem with load imbalance when driving more than multiple CoBs in parallel.
The voltage difference between 24 and 18 is too large to use a CCR or drop resistor, efficiency would be 75% minus the Signa efficiency. So most of the electricity would be producing heat. The LDDs are 97% efficient.
What about using the meanwell 24v power supply and then using inline a dc to dc booster
That gets a little tricky. The HLG is a constant current driver. These Boost converters you picked are constant voltage.
You would need a Boost constant current driver that would be better driven by the Signa.
A Buck step down constant current driver is more efficient unless the cost of electricity is not a concern.
What I would do is use 18V CoBs and pair each with a Mean Well LDD-H, step down driver.
They cost $3.49 here: http://www.ledsupply.com/led-drivers/mean-well-ldd-l-series-cc-step-down-mode
You would power 3-4 of the LDDs with a Signa.
The Bridgelux EB strip is not a horrible idea. Except max forward voltage is greater than 24V.
The only other viable solution would be to buy a higher voltage supply. But you still have the same problem with load imbalance when driving more than multiple CoBs in parallel.
The voltage difference between 24 and 18 is too large to use a CCR or drop resistor, efficiency would be 75% minus the Signa efficiency. So most of the electricity would be producing heat. The LDDs are 97% efficient.
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