Other Parts Discussed in Thread: BQ4050,
Hi,
In my project, I want to integrate the BQ4050 chip. As it has an SMBUS interface, and my MCU has an I2C interface, so I want to validate that I can communicate with it through I2C.
I have ordered the BQ4050EVM-561 eval board, and here is what I have done so far :
- Replaced R9 and D1 with 10-ohm resistor
- Connected a 1-cell Li-ion 3.7 V battery between 1N and 1P, and shorted 1P-2P-3P-4P
- Connected a 4.2 V power supply between PACK+ and PACK-, and shorted SUS_PRES with PACK-
- Connected the SMBUS interface with an external 3.3 V I2C interface (4.7 k pull-up resistors)
I am not able to communicate with the board, as it does not ACK its own I2C address :
Same result if I press the WAKE button.
Is there something I am doing wrong ?
Thanks
