[FAQ] TPS53685: [FAQ] PMBus Address setting for TPS53685 and TPS536C5

TPS53685 and TPS536C5 supports two methods to set PMBus address.

• PD (Pin Detect)

When using PD method, first we have to know the "PD_PMBUS_ADDRESS".  PD PMBUS_ADDRESS is the initial base setting of the PMBus address when appling PD method.

The default PD_PMBus_ADDRESS :

TPS53685: 3Fh

TPS536C5: 5Fh

The RADDR will provide the offset.

PMBUS_ADDRESS = PD_PMBUS_ADDRESS + offset

• NVM

Place RADDR >15k Ohms will be consider as an OPEN, and you can directly change the PDBUS_ADDRESS inside the config file.

Example: Using TPS536C5, PMBus address is 60h

• PD
  1. let RADDR be 511 Ohms. (5Fh+1 = 60h)
  2. Change the "PD_PMBUS_ADDRESS" to 60h and let RADDR be 0 Ohms.

• NVM
  1. Place RADDR >15k Ohms, and set the PMBUS_ADDRESS in the config file.