QUASI-CW LASER DIODE DRIVER/CURRENT SOURCE Output Current Output

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QUASI-CW LASER DIODE DRIVER/CURRENT SOURCE Output Current Output

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DLD-127A
QUASI-CW LASER DIODE DRIVER/CURRENT SOURCE
Output Current Output Voltage Pulse Width 50µs Rise Time 25µs
Analog Modulation 10KHz Constant Current Constant Power Control High Efficiency Module
DLD-127A watt laser diode driver/current source designed drive laser diodes other lowimpedance loads volts amps. optimized diode pumping solid state lasers, illumination, other high power applications. DLD-127A operated continuously (CW), pulsed (Quasi-CW) analog modulated external analog modulation input. generate output pulse widths 50µs 10KHz, with analog modulation bandwidth 10KHz. DLD-127A operated either laser current (constant current) optical power (constant power) control modes. control mode user-selectable, signals monitor output current available through user interface connector. constant power control mode, user-supplied photodiode connected DLD-127A provide optical feedback control current source through on-board photodiode amplifier. constant current control mode, laser current monitored, controls driver output. output current voltage also compared internal external over-current setpoints, internal overvoltage setpoint, determine over-current overvoltage fault. Designed applications, DLD-127A derives high current output from 24VDC 48VDC input power supply, +5VDC ±15VDC support power. analog modulation output current setpoints controlled 0-10V analog inputs. driver high efficiency switch-mode current source. This architecture provides efficiency greater than 75%, minimizing power dissipation cooling requirements. Safety features include power reset hardware delay, driver power-on indicator, laser over-voltage overcurrent faults, driver over-temperature fault. DLD-127A provided air-cooled heatsink, ready installation assembly applications.
Analog Modulation 5KHz (20A Bias, ±10A Modulation)
Trace Input Signal Bottom Trace Output Current 100µs/Div Horizontal Scale, 10A/Div Vertical Scale (Bottom Trace)
Output Waveform
250µs/Div Horizontal Scale, 10A/Div Vertical Scale
Analog Modulation 1KHz (18A Bias, ±17A Modulation)
Trace Input Signal Bottom Trace Output Current 250µs/Div Horizontal Scale, 10A/Div Vertical Scale (Bottom Trace)
DIRECTED ENERGY INCORPORATED
SPECIFICATIONS (Measured 40A, output)
PARAMETER Laser Diode Controller Voltage Polarity Maximum Output Voltage Current Range Maximum Duty Cycle Pulse Width Pulse Rise Time/Fall Time Depth Modulation Droop Overshoot Undershoot Ringing (Pulse Mode) Output Power Stability Temperature Coefficient Efficiency External Modulation Input Input Signal Bandwidth Transfer Function Control Monitor Inputs Reset Current Limit Laser Diode Enable Control Monitor Outputs Output Current Monitor Laser Over Current Fault Laser Over Voltage Fault Over Temperature Fault Driver Power Driver Fault Photodiode Amplifier Photodiode Amplifier Output Photodiode amplifier gain Photodiode bias voltage Bandwidth Limit General Operating Temperature Range Power Requirements Cooling Requirements Dimensions including heatsink) Weight (Including Heatsink)
SPECIFICATIONS SUBJECT CHANGE ITHOUT NOTICE DLD-127A will operate voltage from 24VDC 48VDC, however maximum output voltage with 24VDC input obtain full output, input required.
VALUE Positive with respect ground 100% 50µs controlled modulation input Controlled modulation input, minimum rise fall time 25µs, maximum bandwidth 10KHz 1KHz, 5KHz, 10KHz maximum, typically 0.5% over hours full power, measured 25°C with temperature variation <±0.5°C into resistive load 250ppm/°C from 40°C >75% +10V 10KHz 4000mA/V into reset driver faults 0-10V Analog Voltage Setting, range into Ohm, High=Enabled 4A/V into Open collector output, 50mA current sink, Low=Fault, Imax latches driver Open collector output, 50mA current sink, Low=Fault, Vmax latches driver Open collector output, 50mA current sink, latches driver Driver Power Indicator, Open collector output, 50mA current sink, Low=Fault Open collector output, 50mA current sink, Low=Fault, latches driver output Adjustable 100KHz +40°C 48VDC ±15VDC 0.25A; +5VDC 0.5A Forced Air, CFM, temperature 40°C (102mm 305mm 76mm) Ounces (1.45 Kilograms) 9200-0206
Noise Ripple (After initial edge, steady state)
Directed Energy, Inc. 2401 Research Blvd., Suite Fort Collins, 80526 970-493-1901 Fax: 970-493-1903 Email: deiinfo@directedenergy.com Web: http://www.directedenergy.com

QUASI-CW LASER DIODE DRIVER/CURRENT SOURCE Output Current Output

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