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TDA4VP-Q1: some questions

cao qi
Intellectual 786 points
Part Number: TDA4VP-Q1
Other Parts Discussed in Thread: TDA4VH
  1. 1、PMIC TPS6594133 Checklist Requirements GPIO4 is in the VRTC (1.8V) power domain, reference design pull-up to VCCA_3V3, contradictory - GPIO3 has the same contradiction?
    1、PMIC TPS6594133 check list要求GPIO4属于VRTC(1.8V)电源域，参考设计上拉到VCCA_3V3，互相矛盾——GPIO3也有同样的矛盾？

2、RTC backup battery: Will the VBACKUP external 1.8V LDO (purpose: clock hold circuit) of the TPS6594133 cause the LDOVRTC to burn out?
2、RTC备用电池：TPS6594133的VBACKUP外接1.8V LDO（目的：时钟保持电路），是否会导致LDOVRTC烧毁？

3、TDA4VH/TDA4VMP requires an AVL/QVL list
3、TDA4VH/TDA4VMP需要AVL/QVL列表

4、PDN-3A的参考设计中第二颗TPS389006004RTE_VMON3/VMON4/VMON5三个pin脚监控了同一个电压，这样做的原因是什么，可否改为：监控P3V3_MCUIO_2（分压至1.8V）或者其他解决方案；
4、The second TPS389006004RTE_VMON3/VMON4/VMON5 pins in the reference design of the PDN-3A monitor the same voltage, what is the reason for this, can it be changed to: monitoring P3V3_MCUIO_2 (voltage division to 1.8V) or other solutions;

  • 0
    TI__Mastermind 47440 points

    1.  GPIO3 and GPIO4 logic thresholds are VDIG but can handle IO level up to VIO (fail-safe IO)

    2. PMIC includes RTC module.  The battery can provide power to the RTC in event of power loss from main supply.

    3. What specific information are you requesting for TDA4VH/TDA4VMP? 

    4. I believe the devices are set to monitor 1.8V supplies for these rails.  You can assign this monitors to whichever 1.8V rails your design requires.  This would be dependent on you specific safety requirements.