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ISO1212: ISO1212DBQR

Expert 1700 points
Part Number: ISO1212

HI

I am using ISO1212DBQR, and from safety reasons, i need to know what happens when R sense get shorted ?

Thanks

  • Hi,

    Thanks for reaching out and for showing interest in ISO1212.

    The RSENSE resistor regulates the current that goes into device and the maximum recommended current that the device supports is 6.5mA. Hence, a lower resistance than 195Ω could allow more current into device and cause damage. A short of RSENSE resistor would mean no current regulation into device and possible device damage.

    I hope that answers your question, thanks.


    Regards,
    Koteshwar Rao

  • Hi

    I have another question regarding the ISO1212.

    What can happen, if there is a short between pin 15 (IN1), and pin16 (sense1), assuming that RSENSE is ok.

    Thanks

  • Hi,

    Thanks for following up.

    When INx pin is shorted to SENSEx pin then the behavior is going to be same as shorting RSENSE. The current regulation is achieved by monitor the voltage VSENSE measured across RSENSE which is nothing but the voltage between SENSE and VIN pins. For the device to be able to measure VSENSE, the pins SENSE and VIN shouldn't be and there should be a valid resistor between them, which is the RSENSE.

    I hope this helps you with further clarification, thanks.


    Regards,
    Koteshwar Rao