Part Number: BQ40Z50-R3-DEVICE-FW
I would like to check the SMBus communication circuitry.
In bq40z50-R1, the reference design was using 100ohm and 200ohm in series for both SMBD and SMBC.
In bq40z50-R2, the reference design got changed to use only one 100ohm resistor on SMBD and SMBC.
May I know the following:
1. Why does the design changed?
2. Which one should the user use?
3. Is there any concern if removing those resistors on SMBD and SMBC lines, and use TVS diodes instead of zener diodes?
Thanks.