وبینار الکترونیک قدرت

GaN-based Solutions for Cost Effective Direct and Indirect Time-of-Flight Lidar Transmitters

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https://register.gotowebinar.com/register/4047566595808903439?source=email

Abstract: Lidar is a form of remote sensing which compares a transmitted optical signal to its reflection to determine properties of a remote target of interest. Distance-sensing lidar has shown explosive growth in the last decade, and GaN power FETs have been a key enabling factor in this growth. Two significant forms of lidar dominate the lidar industry today: direct time-of-flight (DToF) and indirect time-of-flight (IToF). Typical DToF lidar sends individual pulses, and times the reflection to compute the distance to the target. IToF lidar works by comparing the phase of transmitted and reflected pulse trains. Both depend on short, high current pulses to drive a laser diode transmitter, where pulse currents range from a few amps to hundreds of amps, and pulse widths can be less than 2 ns. GaN FETs make this possible in a cost-effective and compact manner. This webinar discusses both approaches to 3D imaging, where each technology will find its position in the autonomous vehicle of the future, and how GaN enables this future. Recent advances in GaN technology, and especially the advent of lidar GaN ICs, will be shown that improve system performance and significantly reduce system cost. Performance examples are shown, including results of GaN lidar-specific reliability testing. The latter shows that there are no major new failure mechanisms surfaced by the new and extreme operating conditions of lidar transmitters.