In MAX16046, Any GPIO can be configured as “Any Fault” occurs. It gets triggered whenever fault occurs. After the fault, how to identify the faulty monitoring channel?

To identify the faulty monitoring channel, following register settings should be done in MAX14046’s configuration:
  1. Register 0x5Dh (EEPROM lock register) should be set to 0x00. This register setting enables EEPROM to log the faulty channel’s data.
  2. Non-volatile EEPROM registers should be cleared. Set register 0x00h to value 0xF0. Other registers from 0x01h to 0x0Eh should be set to value 0x00.
  3. Enable critical fault enable bits in register 0x48h to 0x4Ch (fault cause saving registers). These registers can be set to 0xFF to enable the trigger of critical fault for every possible fault such as Undervoltage, Overvoltage or Secondary early warning threshold.
With these settings, if fault occurs in the system then it gets logged in the EEPROM.
To identify the faulty channel, see registers 0x01 and 0x02 in non-volatile EEPROM area. See table 24 in MAX16046 datasheet.
Tags: MAX16046 power management LTspice Isolated Gate Drive & Sense Signal Chains 000096105
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