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TPS65216: Need your confirm the SCH When using TPS65216 on AMIC110,

Eggsy Pang
Expert 4985 points
Part Number: TPS65216
Other Parts Discussed in Thread: AMIC110,

Hi team,

 

       When using TPS65216 on AMIC110,  we have some below questions need to discuss with you.

  1. Customer don’t use PFI and nPFO, let them NC, is it ok?
  2. Customer don’t need PB function, let it pull up, is it ok?
  3. Customer don’t use AC_DET, let it tie to IN_BIAS(VCC). Is it ok?
  4. The PWR_EN connect to AMIC110 the pin PMIC_POWER_EN,  or let PWR_EN pull up?

Thanks for your help!

  • 0
    TI__Mastermind 30260 points

    Eggsy Pang said:
    Customer don’t use PFI and nPFO, let them NC, is it ok?

    Yes.

    Eggsy Pang said:
    Customer don’t need PB function, let it pull up, is it ok?

    Yes.

    Eggsy Pang said:
    Customer don’t use AC_DET, let it tie to IN_BIAS(VCC). Is it ok?

    No, if PB is un-used you must short AC_DET to GND.

    Eggsy Pang said:
    The PWR_EN connect to AMIC110 the pin PMIC_POWER_EN,  or let PWR_EN pull up?

    You should connect PWR_EN of the TPS65216 to the PMIC_POWER_EN pin of AMIC110.

  • 0 in reply to Brian Berner
    TI__Expert 4985 points

    Hi Brian,

    Thanks!

    If AMIC110 don't use RTC, PMIC_POWER_EN pin of AMIC110 would not output high logic to TPS65216.

    So customer want to let PWR_EN of TPS65216 pull up. Do you think it make sense?

    Thanks!

  • 0 in reply to Eggsy Pang
    TI__Mastermind 30260 points
    Eggsy,

    Yes, the PMIC will operate correctly if PWR_EN (pin 46) is pulled up directly to the main input voltage (VIN or VSYS = 3.6V to 5.5V) through a 100kOhm resistor. This is what we refer to as an "always-on" use case, since the PMIC will not be able to enter any low-power states.