Being currently in internship, my tutor asks me to design a BMS (Battery management system) from an ESP32 (circuit attached) which communicates in SPI.
However, the Eval Board must be powered by an external power supply and not by the 12 battery cells so that I can control the GPIOs to test that the communication between the ESP32 and the Eval board is well done.
The problem is that I tried to supply the Eval Board with 5V at pin Vreg and GND at pin LTC6804V-. However, it created a short circuit.
Not knowing at all how to power it with an external 5V supply, I come to ask for help on the forum.
It appears your supply needs to be attached to X1-1 and X1-2. The schematic is wrong since you have X1-2 labeled as 7-12V but that is connected to GND. They labels should be swapped. Apply GND to X1-2 and 7-12V (not 5V) to X1-1. If you already have a regulated 5V supply, you can attach that to the output of IC1 (the voltage regulator) and bypass it completely.