Other Parts Discussed in Thread: TPS2121
Tool/software:
I need assistance reviewing the schematic shown below.
On the left side, there is the main power supply, which comes from the vehicle. On the right side, there is a charging circuit for the backup battery. Since the main power side is always connected, reverse polarity protection is only needed on the backup battery side.
The bottom section of the schematic includes the power ORing circuit, based on the TPS2121, which handles seamless switching between the main and backup power sources.
Please note that the chassis ground from the vehicle power supply is very noisy, so I have kept the signal ground separated on the board to minimize interference.
Your feedback is especially appreciated on Section B, which covers the reverse polarity protection for the backup battery.
