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BQ76952: Fuse protection consult

Stanley Dai
Expert 5810 points
Part Number: BQ76952

Hi Team,

When the BQ76952 happens secondary protection using the FUSE function, can some secondary protections be designated to use the FUSE function, but some secondary protections will not? And how to do it?

Best,

Stanley

  • 0
    TI__Prodigy 720 points

    Hi Stanley,

    There is no native setting in the device that can do this. However, if you are working with microcontroller, one solution you can try is to have the microcontroller determine what the device does based on the PFStatus. First you would need to ensure in Data Memory:Protections:Protection Configuration that the PF_FUSE and PF_FETs bit are set to zero. This means that whenever a PF occurs the only thing in the device that will change is the Status. This can then be accessed by sending the command PFStatusA, PFStatusB, or PFStatusC to the device. There are subcommands you can use to toggle the fuse pin or turn off the charge or discharge FETs.

    Hope this helped.

    Best,

    Andrew