Astral PicoDrive CC Boost Driver for High Vf laser diode 405nm 488nm 495nm etc

Description

PicoDrive
Constant current laser diode boost driver designed for those
high Vf laser diode
like:
405nm
,
477nm
,
480nm
,
488nm
,
490nm
,
495nm
,
505nm
,
510nm
, etc
SPECS:
Topology: Boost (When operating,
Vin must be below Vout/diode Vf
)
Vin: 2 - 24V (tested up to 18V input)
Vout: 2.5 - 28V (tested up to 32V output)
Iout:
70 - 1500mA+
(depends on Vout)
Size: 12*9mm
Features:
Current regulated
Adjustable current
Soft start (internal)
Thermal shutdown
Thin PCB with lots of vias
, maximizing heat transfer from top side to bottom side.
Component mounted and soldered using automated assembly machine, minimizing human error.
Continuous ground/negative
Method of test:
Using 3.8V battery source
Current measured across 1Ω resistor
Voltage drop (Vf) simulated using multiple combination of standard rectifier diode
Driver not heatsinked
Here is the test result:
Min current (potentiometer at most CCW position):
70mA @ 5.72Vf
Current set at
107mA @ 5.91Vf
Current set at
208mA @ 6.2Vf
Current set at
210mA @ 7.7Vf
Current set at
480mA @ 8.3Vf
Aaand, here is the current set at max potentiometer setting (potentiometer at most CW position)
Current output:
~1300mA @ 6.2Vf
Current output:
~1600mA @ 4.9Vf
Please note at max pot setting:
it looked like the driver outputting an overshoot, but it's not an overshoot!
it's because the driver gets hot easily and the current output declined rapidly as i tested the driver without heatsink.
Heatsink is mandatory if you are going to use this driver to drive a high power (current*voltage) output!!
Warning:
This driver is a current source mode driver.
Do not disconnect the laser diode while operating, diode damage may result.
Do not operate it without a load or with a short circuit output, damage to the driver may result.
Use secure solder joints for laser diode connection.
Shipping:
Cannot send to Canada using registered airmail (economy shipping) due to non-traceability