What is the flashing time in the switching power supply?
Of course, there is no set of blanking time IC can be an RC filter to take this spike, the effect is the same.
In order to avoid this spike voltage to make the controller malfunction of the IC will increase the time of about a few hundred nanoseconds, and this time the built-in current limit comparator will not work, Gate output drive will not be Shutdown.
Blanking time intuitively speaking, in this period of time the controller does not move. For example, IC current detection pin, whenever the power MOSFET to open a current sense resistor is not inevitable to produce a peak voltage.
