In MEZS7-1S-4SPDCharger EVK, it is using two N-MOSFET with common source back to back for the input overvoltage protection.
Understand that this setup is to achieve bidirectional power switch.
However, since this is for the Vin pin protection, voltage only flow from VBUS to VIN pin.
So what is the reason to setup for bidirectional?
Is it to prevent the voltage flow from the capacitors (C16, C17, C19, C20, C21) back to the VBUS?