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02001026 
Rev 1 ECO 7062 

Operation Manual: 

LDD-100/150/250-XX-YY 

Page 1 of 13 

 

 

 

    

 

 

USER MANUAL 

LDD-100/150/250-XX-YY 

CW Diode Driver Power Supplies 

 

The LDD-100/150/250 family of high power CW diode laser can be configured for 

output currents from as low as 10A to output current up to 80A at maximum 
power levels from 100W to 250W.   

 
As a laser diode driver, the LDD diode driver acts as a programmable current 

source and delivers constant current based on the input program signal, 

Ip), which is normally 0-10V.  All units are configured with a maximum 
current and maximum voltage capability, depending on the user’s requirements.  

LDD power supplies will deliver current, as programmed, into any load, providing 
the voltage requirements of that load do not exceed the maximum rated voltage 

of the unit.  When the required compliance voltage is higher then the maximum 

rated output voltage of the unit, the unit will limit output current.    
 

LDD diode drivers utilize a proprietary low loss, high frequency power factor 
correction circuit which keeps power factor above 0.98.  Power factor corrected 

power supplies use up to 30% less input current and meet stringent IEC 

harmonic requirements.  The output inverter is a state-of-the-art zero voltage 
switching (ZVS) inverter which permits very high frequency power conversion 

with minimum losses and electromagnetic noise.  
 

 

Summary of Contents for LDD-100

Page 1: ...capability depending on the user s requirements LDD power supplies will deliver current as programmed into any load providing the voltage requirements of that load do not exceed the maximum rated vol...

Page 2: ...ons 5 LDD 100 150 250 Interface 7 INSTALLATION AND OPERATION 9 Optional RS 232 Protocol 12 Tables and Figures LDD Laser Diode Power Supply Block Diagram 4 LDD 100 150 250 Outline Drawing 6 LDD 100 150...

Page 3: ...This inverter boosts the input voltage to 400VDC In the process of boosting the input AC voltage the input AC current is adjusted so that is always in phase with the input AC voltage Without this pow...

Page 4: ...EMI noise and a reduction in overall system heatsink requirements Output Circuit The output filter is a single stage RC filter designed to keep ripple and output noise very low Control Circuit The con...

Page 5: ...sec 10 to 90 Full Current Current Regulation 0 5 of Maximum output current Temperature Drift 0 5 over temperature range after 30 minute warmup 0 5 in first 30 minutes Current Ripple 0 5 of maximum out...

Page 6: ...02001026 Rev 1 ECO 7062 Operation Manual LDD 100 150 250 XX YY Page 6 of 13 Figure 2 LDD 100 150 250 Outline Drawing...

Page 7: ...5 Vout Monitor output 0 10V 0 Voutmax The output voltage of the supply can be monitored by Vout Monitor 6 Iout Monitor output 0 10V 0 Ioutmax The output current of the supply can be monitored by Iout...

Page 8: ...02001026 Rev 1 ECO 7062 Operation Manual LDD 100 150 250 XX YY Page 8 of 13 Figure 3 LDD 100 150 250 Interface...

Page 9: ...ure 4 Although the user interface is typically designed by the user Lumina Power can provide any assistance necessary to modify interface program and monitor levels See Table 1 and Figure 3 for descri...

Page 10: ...am Pin 7 A 0 10V signal results in 0 to Ioutmax as long as the rated compliance voltage of the driver is not exceeded 4 Operating the LDD a AC INPUT POWER CONNECTION Connect AC power connections to po...

Page 11: ...output current as programmed 5 Monitoring LDD output and performance a Current Monitor Power supply output current can be monitored via pin 6 Iout Monitor A 0 10V signal will represent the output cur...

Page 12: ...ply and reading back the output current and voltage The output can be turned on and off with a command as well Command Reply Function Pxx xx xx xx cr cr Program output current to max rated output curr...

Page 13: ...Interface Schematic Pin Pin Name Functional Voltage Level Description 3 Interlock input Open OFF Connect to GND RUN The Interlock function can be connected to external interlock switches such as door...

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