I have a boost converter circuit that will boost 12 V to around 180 V, the circuit is works pretty good but there is huge reverse current in fast recovery diode right before the load. Here is my circuit and the simulation
The green line is voltage in R3 (ignore the value because I know how to control that), the blue line is the current through D1, as you can see, in the very beginning, the current has opposite direction which is I assume as reverse current in D1. My questions are
How can the current go reverse the diode? It must be blocked since the maximum blocked voltage around 1 kV?
If it is how supposed to be, can I assume it as surge current of diode?