Maiman Electronics
SF6100
12
NTC Interlock
Thermistor connection. Allows you to measure the temperature of a laser or other devices. The
measurement result is readable by the digital interface. Set upper and lower limits of the temperature
at the outlet of which driver operation is blocked. When the temperature returns to the specified
range, the driver operation resumes.
14.
How to get started
1.
Unpack your driver;
2.
Connect a dummy load (e.g. a Schottky diode) to the LD- and LD+ terminals. Please note
polarity;
3.
Connect the controls (analogue and/or digital);
4.
Connect the power supply. Please note polarity;
5.
Rotate the current limit potentiometer clockwise several times;
6.
Turn on the power supply;
7.
Set the current equal to the desired current limit threshold;
8.
Enable the driver;
9.
Rotate the potentiometer counterclockwise slowly while the crowbar status pin becomes high;
10.
Restart the power supply to reset protection;
11.
Make sure the over-current protection limit is set right;
12.
Make sure that all controls are working;
13.
Turn off the power supply and disconnect a dummy load;
14.
Connect the laser diode to the LD- and LD+ terminals. Please note polarity.
15.
Cooling
The driver produces up to 50W of losses. Thus the base plate has to be mounted on a
thermal conduction surface to ensure proper operation and prevent an over-temperature
shutdown. If the conduction cooling is not enough an additional cooling may be achieved by
placing the driver into the airflow of a fan.
16.
Internal protections
Several security features protect the laser diode and driver from damage. Reverse diode
protects the laser diode from reverse currents. In case of an over-current or an over temperature
condition, the control logic disables the driver and the output shorts by a crowbar clamp. A soft-
start mechanism slowly raises the current at startup to protect the laser diode against current
overshooting.
17.
Software
We offer own software to control driver. You can find it at maimanelectronics.com in the
downloads section of the product page. Or contact us at [email protected].