Convoy L2 XHP50 Mod

[KawiBoy1428]

Here ya go, check this out, it will explain a lot of things for you….

Understanding the difference between Linear, Buck, Boost and Direct Drive drivers

A long time ago I promised I would do a topic to explain to the interested layman the difference between Linear, Buck, Boost and Direct Drive drivers. Well, here it is. Direct Drive [image] This is the simplest and cheapest design. As its name implies, it is a direct path to the LED, just like old incandescent flashlights. Sometimes there is a control chip and transistor to create modes (High, Low, Strobe, etc.) by rapidly switching ON and OFF the LED. That’s called PWM. This is used by peop…

Why no high-power boost drivers?

Looking around at commercial and community-designed drivers, there’s one for just about everything. Want a direct-drive FET with a sub-lumen moonlight? No problem. Constant current buck for a 3V emitter with multiple cells in series? Easy. Run an XP-L off a AAA? No problem. Run an XHP50 from a single 18650? Keep an XP-L regulated for the whole life of the battery? Crickets…. Zebralight, Armytek and the Noctigon Meteor do this, so it’s obviously not a technical limitation. I know they’re a littl…