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TPS65381A-Q1: how to reset PMIC(TPS65381)?

HL P
Prodigy 40 points
Part Number: TPS65381A-Q1

If my PMIC (TPS65381) chip is in the safety state and latched in this state, is there a way for me to communicate via SPI (no matter which register is operated), and manually enter the PMIC into the reset state?

  • 0
    TI__Genius 13216 points

    Hi,

    Thank you for posting your question on E2E. Please expect a response form the team early next week.

    Thanks,

    Daniel W

  • 0
    TI__Genius 12735 points

    Hello,

    It depends on how the device was configured on startup. If the WD_RST_EN bit was set to 1 while in DIAGNOSTIC state then the MCU can intentionally force a transition to RESET state by sending incorrect Watchdog answers and forcing the WD_FAIL_CNT=7+1. There is also a SAFE STATE TIME-OUT that can be configured in order to leave SAFE state but the best way to get out of SAFE state is a watchdog fail with WD_RST_EN set to 1.

    Best regards,

    Layne J