• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 49 subscribers
  • Views 132 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

INA2180: INA2180A1

INA2180: INA2180A2IDGKR

Fahad Shah
Prodigy 110 points
Part Number: INA2180

Tool/software:

Hi, 

I used this circuit in my design, but it is not working. Do you please provided the support so I can work on it again. Thank you, FS

  • 0
    TI__Expert 5560 points

    Fahad,

    Thanks for the question and using the E2E forum.

    Can you please define "not working" so we can better help with debugging?

  • 0 in reply to Louis L
    Prodigy 110 points

    Hi, 

    I apologize for the confusion earlier.

    By "not working," I mean that the circuit does not respond when an input signal is applied. However, when I removed the shunt resistor by shorting the traces, the circuit began functioning correctly.

    Could you please review the design to identify the issue and guide me on how to correct it? I am currently designing a new board and have an opportunity to implement the necessary fixes.

    I hope this explanation is clearer now. I appreciate your time and look forward to your guidance.

  • 0 in reply to Fahad Shah
    TI__Mastermind 32260 points

    Hello Fahad,

    I think you have to  much capacitance at the output.  

  • 0 in reply to Javier Contreras4
    Prodigy 110 points

    Hi, 

    I’m currently facing an issue related to the shunt resistor in my circuit. When the shunt resistor is connected, the solenoid does not respond to the input signal, and the circuit appears non-functional.

    However, when I remove the shunt resistor by shorting its traces, the solenoid operates as expected.

  • 0 in reply to Fahad Shah
    TI__Expert 5580 points

    Hi Fahad,

    Can you please show a scope shot of the output of the INA2180 when the shunt resistor is connected and when the shunt is shorted?

    Can you also provide a scope shot of the input signal of the INA2180 when the shunt resistor is connected and when it is shorted?

    Javier is right that you have too big of a capacitive load on the output which is likely contributing to the issues you are seeing.

    Best,

    Holly