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Universal Laser Diode Driver uniLDD

Universal Laser Diode Driver uniLDD

uniLDD is DC input power converter designed to supply CW or pulsed current for single emitter, bar or stacked laser diode in CC mode. It can be installed either as a standalone unit or assembled as a set of open PCB boards.

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delivery Estimated delivery time: Request
Products
Specifications
Performance
Brochures
Description
Operation mode
TEC outputs
Diode compliance voltage
Output current
Rep. Rate
Pulse Duration
Cooling
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Code Operation mode TEC outputs Diode compliance voltage Output current Rep. Rate Pulse Duration Cooling Price Delivery Add to cart
uniLDD-CW-30-50 CW 0 27 V 50 A - - Forced air Request Request
uniLDD-CW-30-80 CW 0 27 V 80 A - - Forced air Request Request
uniLDD-CW-30-100 CW 0 27 V 100 A - - Forced air Request Request
uniLDD-CW-60-50 CW 0 35 V 40 A - - Forced air Request Request
uniLDD-CW-TEC-30-50 CW 1 27 V 50 A - - Forced air Request Request
uniLDD-QCW-2TEC-30-160 CW 2 25 V 160 A 10 Hz <300 μs Forced air Request Request
uniLDD-QCW-2TEC-100-160 QCW 2 80 V 160 A 10 Hz <300 μs Forced air Request Request
uniLDD-QCW-100-360 QCW 0 80 V 300 A 15 Hz <500 μs Forced air Request Request
uniLDD-CW-QCW-30-80 CW, QCW 0 25 V 80 A 10 Hz <250 μs Forced air Request Request
uniLDD-C-CW-30-50 CW 0 27 V 50 A - - Conductive Request Request
uniLDD-C-CW-30-80 CW 0 27 V 80 A - - Conductive Request Request
PARAMETER VALUE NOTES
Input
Voltage, power stage 12 ... 90 V DC Control and power stage may share single supply 12 ... 30 V
Voltage, control stage 12 ... 30 V DC Control and power stage may share single supply 12 ... 30 V
Output, CW mode
Diode compliance voltage 1 ... 27 V Up to 95% of power stage supply voltage
Max current 50 A - 100 A See "Suggested configurations" tab for max current values
Current ripple 0.1 % pk-pk DC ... 100 kHz bandwidth, in x0.5 ... x1 of max current range
Current drift < 0.2 % Cold start, 8 h period, after 5 min warm up
Bandwidth of Iprogramm control input frequency > 10 kHz At minimal connection cable inductance
Output, OCW (pulse mode)
Diode compliance voltage 1 ... 80 V  
Max pulse current 160 A - 360 A See "Suggested configurations" tab for max current values
Current pulse raise > 5 µs At minimal connection cable inductance and sufficient power stage voltage
Max RMS current 80 A 80 A for diode compliance voltage >28 V
Current pulse amplitude stability 0.1 % pk-pk In x0.5 ... x1 of max current range
Current drift < 0.2% Cold start, 8 h period, after 5 min warm up
Environment
Operating temperature 0 to 40 °C De-rate current at higher temperature
Cooling Forced air, installed or external shared fan Inquire for conduction cooled version
Protections
Current transient protection and shut down
Open circuit shut-down
Power voltage brownout shut-down
Over temperature shut-down
Interlock shut-down
 
Auxiliary outputs
+5 V @ 200 mA
+15 V @ 100 mA
-15 V @ 100 mA
 
Configurations
Operation mode CW, QCW (pulse)  
Max current, CW mode 50 A, 80 A, 100 A  
Max current, pulse mode 160 A, 360 A IRMS≤100 A, duty factor ≤20%
Max power stage voltage 28 V (CW, QCW) and 90 V (QCW)  
TEC Control (if equipped)
Quantity of outputs to control 0, 1 or 2  
Max output current to TEC 25 A  
Max output voltage to TEC 28 V  
Physical characteristics
Assembly size (LxWxH) 190 x 68 x 55 mm 15 mm fan included
Conductive cooled assembly size (LxWxH) 117 x 90 x 27 mm  
Connectors Analog control - DSUB-15
Digital control - Molex Picoflex (6 pin and 10 pin)
DC power input - Multiple
 
CAN bus
  Proprietary EKSMA Optics protocol Protocol description, control application, libraries and programming samples are provided on request
  "CAN Open" stack may be added on request
RS232 port
  ASCII text command protocol  
  Proprietary EKSMA Optics CAN messages tunnel over RS232 protocol Control application, libraries and programming samples are provided

Notes:
- Max current is transient protection upper setting. Laser diode EOL nominal current should be 95% or less of this value.
- Parallel connection of several drivers can be used above 100 A in CW and 400 A in QCW.
- Specifications are subject to change without prior notice. Not all combinations of parameters are possible at the same time. See configuration samples for suggested configurations or send a request with your requirements.

uniLDD Laser Diode Driver current drift 

uniLDD current drift
from cold start for different currents

uniLDD Laser Diode Driver current error

uniLDD current error
12 V and 24 V DC power, 2 V junction + 10 MΩ series R load

uniLDD Laser Diode Driver current efficiency

uniLDD efficiency
12 V and 24 V DC power, 2 V junction + 10 MΩ series R load

uniLDD Laser Diode Driver current ripple

uniLDD efficiency
12 V and 24 V DC power, 2 V junction + 10 MΩ series R load

Frequently Asked Questions
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Questionnaire for Quotation
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EKSMA Optics uniLDD Laser Diode Drivers
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uniLDD is a DC input power converter designed to supply CW or pulsed current for signle emitter, bar, stacked laser diode or high power VCSEL in constant current (CC) mode. It can be installed as a set of assembled PCB boards or as a standalone unit. The standalone unit consists of uniLDD and a power supply.

uniLDD allows bidirectional control (active heating and cooling) of one or two TEC's with the same driver providing current up to 25 A and voltage up to 28 V.

Features:

  • Economical OEM module
  • Wide current range
  • Wide diode complience voltage range
  • Storage capacitor option for pulse mode
  • Storage capacitor charger (current limit) option pulse mode
  • Latest DSP based control technology
  • Frequency response analysis feature allows easy compensation to achieve stable operation with any load and connection cables combination in both CW and QCW modes
  • High efficiency switching mode converter
  • Multi-phase low ripple power stage
  • Board fan and unit fan PWM controllers
  • Low current ripple
  • Low current drift
  • TEC controller option
  • Analog and digital control interfaces
  • Easy configuration