#100 000 lumen flashlight driver
#100 000 lumen flashlight manual

Not suited for automated assembly, but for manual work good. Put a dense array of vias underneath the components, being filled with tin this conducts pretty good (PCB is only 0.8mm thick). I checked that my chosen principle of conducting the heat originating from the MOSFET, the power-diode (boost converter) and the Induktors to the backside of the PCB, and then to the aluminium of the lamp body.

#100 000 lumen flashlight driver

Although efficiency being at ~93%, that still means ~100W peak power being dissipated on the driver PCB. But already now the battery pack delivers enough power to very quickly heat up both the lamp head (>1 kW being dissipated here on ALL_FULL button), and also the DC/DC converter (LED driver) section. Size comparison to the light I built before (the samller has 18650 cell, 4x XPL2 for flood and XHP35+20mm TIR spot, 6000Lumen peak, 35kCd the larger 21700 cell, 4x XHP50.2 flood, XHP35+30mm TIR spot, 12000Lumen peak, Photon Master: interesting cells, good amount of energy per volume. Many, many threaded holes had to be biantion of alu and copper to keep weight manageble Heat of DC/DC converters is conducted through PCB to backside of PCB Here the ALL_ON button was pressed, adjusting all channels to ~75% power View on the front, protective window still missing (will be delivered mid April)

heatpipes to spread heat from head to body.

multiple temperature sensors (and certainly power foldback upon overheating).

vibration motor for important hints like low-bat warning etc.

integrated battery monitoring and balancing circuitry.

36W charging circuitry built in, accepting 5V.12V.

Momentary spot tight and spot wide full, all other off.

Momentary spot tight full, all other off.

4x boost regulator to drive each 4x XHP50/70 at up to 12A.

3x buck regulator to drive SBT90.2 at 38A and 4x 33A.

8x XHP50.2 in 20mm reflectors (medium width, 160kcd).

4x SBT90.2 behind 30mm TIR optics (medium spot, 500kcd).

1x SBT90.2 behind 62mm TIR optic (tight spot, 560kcd).

Built-in thermal control module will automatically adjust the brightness output, keep using comfortably.Want to share this project with some more people being familiar with 'slightly bigger' flashlights, so this project is also posted on CPF, for those of you using both platforms.ДЄfter some Months of development and build time, it is nearly finished now:.

High efficiency constant current circuit will maintain constant brightness.

Built-in switch indicator lights, easy to find the switch in the darkness.

Eight levels which can be exchanged quickly and instant Turbo.

Built-in safety self testing intelligent charging circuit, convenient,fast and safe.Utilizes 18 pieces of American CREE XHP70 XHP70 2nd LEDs, with a lifespan of up to 50,000 hours and a maximum output up to 100,000 lumens.The вЂњhide strobeвЂќ feature keeps you safe by starting quickly at critical moments. Eight output levels ensure long runtimes with low or high output in any situation.

This ergonomic design provides an unprecedented level of grip. The MS18 features IMALENTвЂ™s signature high-grade side pressure switch. The Imalent MS18 is a perfect combination of great energy and technology. A built-in heat pipe radiator with excellent heat dissipation equipped with a silent inlet and outlet fan. The multi-functional OLED display display various parameters and settings. The Imalent MS18, вЂњAmbassador of lightвЂќ utilizes 18 pieces of American CREE XHP70 2nd LEDs with a maximum output of 100,000LM and a long range up to 1350 meters, the Imalent MS18 will bring you absolute shock when you light it up.