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Boost/Buck 3-18V 3 Modes 24mm 30W Circuit Board


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This circuit comes with low voltage protection at 5.7V, so please use two or more li-ion for best result.

Input Voltage: 3-18V (recommend use of 2-4pcs 4.2V 18650 or 4-6pcs 3V CR123A)
Output current (single LED): 4-5A
Output current (3 or 4 XM-L LED wired in serial): 3A
Modes: Low - Medium -- Height 

Low voltage Protection: When using single or two Li-ion batteries, input voltage becomes 5.7V, LED will flash twice per 3 seconds and then turn off after 3 minutes.
Over-heat Protection: When internal temperature becomes too hot, driver will automatically ramp down its brightness, make sure you "heat-sinked" the driver.

LED power output: single LED (8-10W), three or four LED wired in serial (25-30W)
Input requirement: Input current is about 3-3.5A, make sure the wiring and switch is capable of handling this type of high current.

 *When driving 3 or 4 XML (serial) with 1-2 li-ion (serial), this circuit acts as boost circuit. When using 3-4 lion wired in serial, this circuit becomes a buck and temperature regulated circuit.

Dimensions:
Battery board measures 26mm
Main driver measures 24mm
Total heigh measures 17mm

Attention: One piece Circuit Board with 3~4 pieces "Thermally conductive adhesive". To make it better to thermally conductive, please smash the "Thermally conductive adhesive" and filled it between circuit board and body.



 
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Reviews Return to top

Ownership verified by KD Boost/buck driver
Posted by peter.sosna  on   1/21/2014 9:08:36 PM
Avg.Rating: star star star

Strengths:

Worked great at powering my 4 XM-l's

Weaknesses:

Switching board blew a chip and now only runs 1 mode which seems to be medium power.

Summary:

When it works, it works great but mine didn't last more then a few minutes before some chip burnt out at 12v input.
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