- Joined
- Dec 27, 2011
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- 2,062
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- 48
I have some questions about the max current on the BenBoost. I am curious how 1.2A was arrived at as a max? Was it just through testing, or by design.
More specifically, I am curious if the original idea was that the driver might run higher currents but it just didn't pan out in actual real world implementation.
If it was planned that the driver handle higher currents, but it didn't work out to do so, then has any testing been done to try and figure out what the weak link(s) is/are that restrict the max current?
I was reading some driver design articles and came across something on linear's site that made me wonder if the Schottky's 2A max avg current could be a limitation. The article suggested a 3A max average for a higher power LED driver. That was for a 900mA driver.
My ultimate question is, do you think using a higher current Schottky would help the driver to handle more current?
The reason I ask, is that I think that I found a Schottky that looks like it would handle 50% more current and twice the voltage for not too much more ($0.31 vs $0.47) if it would make an actual difference in the capability of the driver.
It also has a Vf of 460mV @ 3A which is the same as the original 2A/10V version.
DIODE SCHOTTKY 20V 3A 123-SOD - RB051M-2YTR - $0.47
Any thoughts?
:thanks:
More specifically, I am curious if the original idea was that the driver might run higher currents but it just didn't pan out in actual real world implementation.
If it was planned that the driver handle higher currents, but it didn't work out to do so, then has any testing been done to try and figure out what the weak link(s) is/are that restrict the max current?
I was reading some driver design articles and came across something on linear's site that made me wonder if the Schottky's 2A max avg current could be a limitation. The article suggested a 3A max average for a higher power LED driver. That was for a 900mA driver.
My ultimate question is, do you think using a higher current Schottky would help the driver to handle more current?
The reason I ask, is that I think that I found a Schottky that looks like it would handle 50% more current and twice the voltage for not too much more ($0.31 vs $0.47) if it would make an actual difference in the capability of the driver.
It also has a Vf of 460mV @ 3A which is the same as the original 2A/10V version.
DIODE SCHOTTKY 20V 3A 123-SOD - RB051M-2YTR - $0.47
Any thoughts?
:thanks: