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TPS659039-Q1: About the TPS659039 diagnostic function

Part Number: TPS659039-Q1

Q1:

The short-circuit state and thermal state of the TPS659039 can be read directly through the I2C register.  Is it necessary to use the INT pins together? why?

Q2:

We want to know the short-circuit and thermal states of each SMPS channel of the TPS659039.
What is the difference between the SOC reading the PMIC Interrupt Status Register (INTx_STATUS) and the Read SMPS_SHORT_STATUS Register and the SMPS_THERMAL_STATUS Register 

SMPS_SHORT_STATUS Register 
  • Feng,

    How you want to use the monitoring capabilities of the PMIC are up to you and your system-level requirements. For short-circuit and thermal detection, you can read the status registers or use the interrupt pin. The interrupt pin will let the processor/mcu connected to the pin know immediately when something happens in the system. The register read depends on the frequency that you read those registers.

    If you read the SMPS_SHORT_STATUS, it will tell you which SMPS rail has a short detected. INTx_STATUS will just let you know that short is present. Depending on your system level requirements and software implementation, you can use either or both of these functionalities in your system.

    Thanks,
    Nastasha