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EV2400: EV2400 with BQ7695202 over i2c (through ISO1640).

Part Number: EV2400
Other Parts Discussed in Thread: ISO1640, BQSTUDIO, , BQ40Z50

I have developed a Eurocard-sized board with 14 Li-ion batteries. Additionally, I have a socket for plugging in a Raspberry Pi Pico W, which communicates with the BQ7695202 using the I2C protocol. I am using an ISO1640 chip, and the REG1 is used to power the ISO1640 on side 2. On the Raspberry Pi Pico W (Side 1), the RPI is powering the ISO1640 at 3.3V.

However, in this case (when using the bqStudio), I have removed the RPI and will plug the 4 wires from Port 2 I2C (Vout, Vss, SD and SCL). This will enable the EV2400 to communicate with the BQ7695202 through the ISO1640 (from Side 1). This means that I need to power the ISO1640 from my computer/EV2400 side 1, and I need power from the Vout. Since there are no other devices on Side 1, I can accept a 3-5.5V supply.

Unfortunately, I am unable to turn on the Vout from bqStudio 1.3.124 and EV2400 version 0.32.

Best regards
Steinar V. Kolnes