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TPS7A20: power up sequence

Koji Ikeda
Expert 5565 points
Part Number: TPS7A20

Hello support team,

Customer ask TPS7A20 power up sequence VIN and VEN. Could you support? They would like to VEN first and 2msec after, supply VIN from 0V. VEN is same as VIN. Can TPS7A20 accept this? Does this sequence make internal ESD protect on?

Figure 6-75 looks like to accept VEN first.

Thanks

Koji Ikeda

  • +1
    TI__Mastermind 18466 points

    Hey Koji, 

    The TPS7A20 can support VEN engaging before VIN.  

    Typically if a device cannot be enabled before VIN, the ABS MAX table will set the max to VIN:

    As long as the value does not exceed ABS MAX, the device should work as spec'ed in the EC table. 

    Best,

    Juliette