Help me understand the Samsung calculator

MidnightSun72

Well-Known Member
So I've been looking at doing a strip build. But due to my time constraints and my desired strips EB Gen 3 4ft not being available I am looking at different options. One is the Samsung Influx Linear strips. From my research they use the LM561c diodes which is pretty efficient when ran soft (200lm/w range).

This is the strip I am using for my example calculations SL-B8U7N90L1WW it's a double row 2 ft strips they have 108 diodes 18S x 6P
The TRP drivers I got are 0.7a 285v CC 92% efficient.
So using the Samsung calculator I am working the following:

7FF4192E-AB52-47E1-83B0-8E968F4FA002.jpeg
at 0.7a these strips use 36.5W they have a max current of 1.4a for the strip so if I understand the calculator correctly even with the driver loss I should be getting 178LM/W over the system?
C5B4D586-A256-4D3A-ACA2-5B5555D110AD.png




and if I put 2 strips in parallel and then I should have 216 diodes with 194LM/W efficiciency?? Is that correct? Also is there anything to worry about wiring two strips in parallel and then putting two parallel strips into series with the rest?

F5187E1F-B4D9-4CD8-B115-334895CC0279.png
 
Looks good but you should at least adjust some in the first example for temps, not reasonable to assume 25C on a 35w strip.
Every time I adjust to over 25 degrees Decius it says I am out of the safe range. But I'll redo with 35*C Ambient. Is the Ta shown there ambient air? Or is that actually Tc (case temp)?
 
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