Another app note from Richtek introducing solutions for reducing the input voltage spike on power switches. Link here
The power switch is a low voltage, single N-Channel MOSFET high-side power switch, optimized for self-powered and bus- powered Universal Serial Bus (USB) applications.
In worse operating condition, an input voltage spike may over the chip’s maximum input voltage specification to damage the chip.
from Dangerous Prototypes https://ift.tt/2QidOp6