contactcr
November 13, 2020, 9:06pm
113
Pixll:
Sorry, I’m not quite understanding how the constant current buck driver will interact with Anduril.
Will the <6A ramps (while battery V > LED V) all somehow be handled by the buck driver (I’m assuming PWM given that it’s constant current?), and everything above handled by PWM on the FET driver? In which case, it would essentially act like a massive and more efficient version of a 7135 chip? And in which case, wouldn’t the lowest modes have quite poor efficiency from having to smoothly PWM all the way down from 6A?
I’m working with limited driver/electronics knowledge here, so please correct me if any of my assumptions are wrong.
You may or may not get an answer from them on this but here is another buck+fet anduril driver (lume1) from one of our members:
Hello BLF,
Hope that everyone is doing well in 2020 and keeping healthy and safe. A few months ago, I was toying with the idea of building a more sensible, everyday flashlight driver, as opposed to my (admittedly impractical) GXB-series high-power drivers. The result is the Lume1 driver.
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Update Aug 2020: Lume1-fw3x is now available for sale thanks to Neal from Nealsgadgets.
Buy a Lume1-FW3X!
Get the Lume1-FW3X driver from Neal…
In the case of lume1, for batt V > LED V the buck portion takes over and has no PWM with max 3A current. Above 3A your only option is full FET (so no PWM here either).