Influence of discharge synchronization on output current in fast linear transformer driver stage

This paper summarizes the design and test results of a four-bricks fast linear transformer driver (FLTD) stage. When the charge voltage of the stage is 160 kV, the output current is 103.4 kA, and the risetime is 78 ns(10%~90%). Discharge synchronization(Δtd) of four switches with charge voltage 120 kV has been studied with differential loop. The experimental results indicate that the peak current and output waveforms are almost free from fluctuation with Δtd＜15 ns, and the standard deviation of peak current is 3.62 kA. If Δtd=15~25 ns, the peak current has a slight loss, the standard deviation of peak current is 8.59 kA, and the output waveforms have small aberrations. If Δtd＞25 ns, the peak current lowers significantly with the standard deviation increasing obviously, and the output