根据半导体激光二极管的工作特性,设计了一种以VICOR电源为功率模块,以绝缘栅双极晶体管(IGBT)为大功率变换器件的大功率激光二极管驱动电源.该驱动电源电路简单,能有效地抑制电源的浪涌冲击,保证了激光二极管不受外界的电干扰.在线保护机制可实时对半导体激光器工作监控,半导体激光器的慢启动电路、温控电路保证了半导体激光器安全工作.该电源已应用于机载激光雷达样机系统中,通过一年多的使用,半导体激光二极管工作正常,性能稳定可靠.

According to the semiconductor laser diode performance characteristic, a kind of high-power diode laser driver was contrived. The output voltage is from 12 to 50 V and the duty ratio is 3 per cent when the maximum output current is 150 A . In the scheme design we used VIGOR device as power module and IGBT as high power change device. The driver circuit is very simple, however, it could restrain current surge efficiently. This ensures that the laser diode doesn't be disturbed. The online protection mechanism could monitor the semiconductor laser in real time. The slowly startup circuit and thermo-control circuit ensure that the semiconductor laser could work safely. Now the driver has been applied in the airborne lidar sample system for over one year. It performs normally and reliably.