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TPS1HB16-Q1: Disabling SNS, DIA_EN, SEL1, LATCH by grounding to Module GND or Device GND?

Husni Nazeer
Prodigy 60 points
Part Number: TPS1HB16-Q1

Tool/software:

Hi, 

I'm going to use TPS1HB16AQPWPRQ1 in one of my Projects. I also want to disable SNS, DIA_EN, SEL1, and LATCH. I want to know which GND(Module GND or Device GND) should be used to disable these by grounding. 

Also, if the En pin pulled low while disabling the above-mentioned functions, approximately how much quiescent current would the IC consume?

Thanks

  • 0
    TI__Genius 9905 points

    Hello, 

    Do you have a schematic to share?

    If using a GND network this will create a level shift and they would need to be routed to IC GND but if there is no GND network system GND is fine.

    "Also, if the En pin pulled low while disabling the above-mentioned functions, approximately how much quiescent current would the IC consume?"

    Im confused here...Quiescent current is measured when the device is enabled, pulling EN low will disable the device. This configuration is not tested.

    BR, 

    Alan

  • 0 in reply to Alan Whitehead
    Prodigy 60 points

    Hi Alan,

    I've attached the schematic segment as you requested for the inspection.

    For the second part of the question, on "Quiescent current," I am sorry for the confusion. I want to know the current consumption with all these pins(SNS, DIA_EN, SEL1, and LATCH) disabled and En staying on.

    Thanks.

    PowerSWITCH_segment only.pdf

  • +1 in reply to Husni Nazeer
    TI__Genius 9905 points

    Hello, 

    For this application system GND is fine. For the current consumption if the device is enable that would be equal to the load current. 

    VBB = 12V, EN = 5V, DIAG_EN = 0V

    The DUT will be active in this case and the current would be what is allowed by the load. What I think you might be asking is the standby current. When the device is disabled and the DIAG_EN is low. 

    EN = DIAG_EN = 0V

    VBB = 13.5V

    ISB = 0.1uA