Lidar development board uses EPC eGan technology to enhance detection

Transition eGaN FETs used on the EPC9126HC pulsed laser diode driver evaluation board can drive high current pulses up to 150A and pulse widths as low as five nano seconds to enhance the quality of information a lidar system will detect, says Efficient Power Conversion (EPC).

Information including the accuracy, precision, and processing speed of the lidar system can be used to create 3D maps for autonomous vehicle applications, where speed and accuracy of object detection is critical, says EPC.

The EPC9126HC is a 100V, 150A high current pulsed laser diode driver evaluation board. It demonstrates the rapid transition capability of eGaN FETs to provide power pulses to drive the laser up to 10 times faster than an equivalent MOSFET, says EPC, thus enhancing the overall performance of a Lidar system.

The EPC9126HC development board is primarily intended to drive laser diodes and features an EPC2001C ground-referenced eGaN FET driven by a Texas Instruments’ UCC27611 gate driver. The EPC2001C is a 100V maximum voltage device capable of current pulses up to 150A.  The EPC9126HC can drive 75A pulses into a high power triple junction laser diode with a pulse width as low as five nano seconds. The board has multiple, low inductance connection options for mounting laser diodes and can drive these via a discharging a capacitor (as shipped) or directly from a power bus.

EPC points out that the board does not include a laser diode, which must be supplied by the user to evaluate specific applications. The PCB is designed to minimise the power loop inductance while maintaining mounting flexibility for the laser diode. It includes multiple on-board passive probes for voltages and discharge capacitor current measurement, and comes equipped with SMA connections for input and sensing designed for 50-Ohm measurement systems.

The user can also enable an optional precision narrow pulse generator, advises EPC.

The board can also be used for other applications requiring a ground-referenced eGaN FET, for example in Class E or similar circuits.

The EPC9126HC pulsed laser diode driver evaluation board is available now from distributor Digi-Key. 


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