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- CW Output current up to 20 Amps
- Output Voltage up to 55 Volts
- Total Output Power up to 1 kW
- Typical Rise/Fall Time 200 μs
- Optimized for Fiber Laser Amplifiers and Laser Burn-In Systems with Multiple Single Emitter Strings
- Very Low Current Ripple/Noise < 0.25 %
- Efficiency up to 99%
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- Current Range up to 20 Amps
- Compliance Voltage up to 55 Volts
- Buck/Boost - wide output voltage range
- PULSED and CW Modes of Operation
- Rise Times to <50 μsec
The model LDDP-20-55 pulsed and CW high power laser diode driver is designed to supply laser diode strings of multiple single emitters in series. Its unique buck/boost switching topology allows DC/DC operation with load compliance voltage even exceeding the DC input voltage: Standard diode drivers with buck converter require a load voltage for minimum ca. 2 V below the supply input.
The LDDP can supply loads from 0 .. 55 Volts from a DC input between 24 .. 52 VDC as long as the input current does not exceed 25 Amps. This allows system designers to keep using common low cost 24 V auxiliary supplies even though common laser diodes can exceed the 30 V compliance voltage level yet. The LDDP offers fast analog regulation. The up to 99 % highly efficient switching regulation provides pulses or up to 100 % amplitude modulation with typ. 200 µs rise/fall times. An even faster high speed model (-HS) with typ. rise/fall times <50 µs and analog modulation to >20 kHz is optionally available.
Besides standard industrial and medical use, its low current ripple/noise makes it especially suitable for sensitive pumping applications. The standard model provides differential signal I/Os for all digital and analog signals. A 10-pin interface option (-10P) provides common GND w/ differential setpoint input.
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