Optoelectronics

Kilowatt laser driver's ripple current is below 1%

5th February 2015
Barney Scott

LASER COMPONENTS’ laser driver partner PicoLAS GmbH has developed a cost- and energy-efficient kilowatt laser diode driver, in a half-brick-size (35cm2). The LDP-CW 20-50 CW-driver can operate serially connected diode lasers with a continuous load featuring voltages of up to 48V and adjustable currents of up to 20A, providing approximately 1kW.

There is the option to set the current via analogue or digital input, with analogue modulation available. The output voltage will be adjusted automatically whether one or 24 lasers are operated as a load.

The driver has a ripple current of less than 1%. With an effective current measurement and subsequent error correction feature in the MCU, the offset between the real value and the set value is less than 0.5%.

The LDP-CW 20-50,  as with many of the drivers in the LDP-CW range, has several protective features necessary for laser system design and function. Protections include integration soft start, overtemperature shutdown, enable/disable input and reverse current protection. Also included is Laser Components' current regulation concept, which actively prevents the laser diode from overshoot.

A control interface and a break-out-board are available to help with development.

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