3.2A TTL (PWM) and Analogue Laser Diode Driver 12V (4W 450nm diodes)

GENERAL CHARACTERISTICS

Diode voltage:                                     tested for 4.2 – 6.5 V diodes

Output Current:                                    3.2A  (tested for 4.2 – 6.5 V diodes)

Input Voltage:                         12V nominal,

Input current:                           ~ 1.8 – 2.0A

TTL/Analogue /PWM:              Optional, 30Khz                                 

Notes:                                     

Normally on with power supplied.  Optional TTL/Analogue modulation using blue socket.

If TTL or Analogue control is required, the supplied cable should be plugged into the blue socket on the driver board adjacent to the power supply connection and the required mode selected with the switch.

For TTL action, connect the wires together to blank the laser, the black wire (ground) will pull the red (high) wire low or apply a TTL level (5V) signal. Pulse switching (PWM) up to 30kHz can be used to reduce the output of the laser. 0V = off, 5V = on. (Note 0V is not the same as no connection which is on!)

Analogue action is similar to TTL except the power output is proportional to the voltage, 0V = 0%, 5V = 100% power.

Power should be supplied using the JST socket.

Laser module has a soft start and will take up to 10sec to reach full power (TTL switching is instant). Always check current on a dummy load before connecting laser diode. Power board down before connecting laser diode.