Applies To These ProductsWLD3343
How can I master/slave WLD3343’s to be used in constant current mode?
The WLD3343 can be used very successfully in a paralleled configuration to double the laser drive current. There are two critical design points to keep in mind: the Safe Operating Area (SOA), and the laser diode type.
- Input the Series impedance, supply voltage and laser threshold voltage values to the SOA Calculator. Since each WLD will drive one-half of the total current, input the half-current value to the SOA calculator.
- Determine whether you are using a Type A, B, or Type C laser based on this image. This information is critical in order to know how to properly wire the paralleled WLD drivers.
- Finally, download the appropriate schematic:
- For additional configuration information, be sure to download the WLD3343 Datasheet.