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XTR111: The output glitch as OD is pulled low

Harry Ma
Intellectual 2650 points
Part Number: XTR111

Tool/software:

Hi Team

Customer is using this device and found there is a glitch as the OD is pulled down.  it seems expected based on DS's information.

Can you explain why there is a glitch? and Are there any ways to suppress this glitch?

CH1:XTR111 supply（12V_AUX_S）    CH2：Imon output (IMON)  CH3:OD （Imonctrl_DSP）   CH4:XTR111 Vin (pin 6)

The schematic is showing as following:

  • 0
    TI__Mastermind 27460 points

    Hi Harry,

    Harry Ma said:
    Can you explain why there is a glitch?

    It's easy to miss but there's two sections in the datasheet that talk about output glitch. The one that you showed talks about how to minimize it. The other section (6.3.2 Dynamic Performance) talks about where it comes from. Shown below is a snippet of that section from the datasheet. 

    Harry Ma said:
    Are there any ways to suppress this glitch?

    Besides the ways to reduce the glitch from the datasheet sections you have attached, you can also have a filter on the output. 

    Best Regards,

    Robert Clifton