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  • TI Thinks Resolved

TPS61041-Q1: Test method

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Replies: 18

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Part Number: TPS61041-Q1

Hi TI-team

1:Is it possible to apply 10mA to each terminal from the GND terminal ?

Is there a possibility that the IC will be damaged ?
Also, can you guarantee on all terminals after this test ?
IC assumes non-energization.
 
2:Is there a current value or voltage value that can be guaranteed if the current value can not be guaranteed at 10mA ?
 
3:Please tell us if there are min, typ and max data about Vf value of each terminal when 10mA of No. 1 is energized.
 
Best Regards,
Koji Hayashi
  • Hi Koji,

    Can you specialize which pin?

    EN pin maximum input leakage current is 1uA. FB pin maximum input bias current is 1uA.

    I don't understand why you ask this question. Did you meet any issues when using it?

    Regards,
    Zack Liu
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  • In reply to Zack Liu:

    Hi Zack-san

    Thank you for response.

    It is for confirmation of the protection diode.
    Therefore, all pins are targeted.

    For example, when a current of 10 mA is applied from EN to GND.

     

    Best Regards,

    Koji Hayashi

  • In reply to Koji Hayashi92:

    Hi Koji,

    What kind of protection diode do you mean? Do you have a schematic?

    It is more common to give a absolute maximum voltage rating on each pins. You can refer to part 6.1 Absolute Maximum Ratings in datasheet.

    If the voltage applied on EN pin is not higher than maximum voltage rating, the current will not bigger than 1uA because this pin inside is high resistance.

    Regards,
    Zack Liu
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  • In reply to Zack Liu:

    Hi Zack-san
     
    It will check the internal protection diode.

    My customer would like to check by sending 10mA from the EN pin to GND with no voltage applied to VIN.
     
    Best Regards,
    Koji Hayashi
  • In reply to Koji Hayashi92:

    Hi Koji-san,

    Sending 10mA from EN pin to GND will break the IC because EN pin is high resistance. 

    Regards,
    Zack Liu
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  • In reply to Zack Liu:

    Hi Zack-san

     

    How much current is it okay ?

    Best Regards,

    Koji Hayashi

  • In reply to Koji Hayashi92:

    Hi Koji,

    EN pin maximum input leakage current is 1uA. FB pin maximum input bias current is 1uA.

    You can get these information in datasheet Electrical Specification Table.

    Regards,
    Zack Liu
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  • In reply to Zack Liu:

    Hi Zack-san

    Thank you for response.

    I'm sorry,


    My customer would like to check by sending 10mA from the GND  to EN pin with no voltage applied to VIN.
    (GND to SW pin etc)
    What about this case ?
     
     
    Best Regards,
    Koji Hayashi
  • In reply to Koji Hayashi92:

    Hi Koji,

    Please don't do this test. EN pin is high resistance, 10mA current will cause very high voltage and will break down this pin.

    I haven't never heard any customer used to do this test. I don't understand why your customer need to do that. And TI doesn't have a protection diode for it.

    Regards,
    Zack Liu
    Boost Converter Solution

  • In reply to Zack Liu:

    Hi Zack-san

     

    How much amperage can safely conduct ? 1mA ?

    Customer wants to do an open / short test.
     
    Best Regards,
    Koji Hayashi

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