• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 2 answers
  • Subscribers 33 subscribers
  • Views 1300 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.

ISO5852S: questions for EC table

Brian Wang0928
Genius 14120 points
Part Number: ISO5852S

There are two questions for EC table of the ISO5852S. please find the enclousre file. thanks.

ISO5852S questions on EC table.pdf

  • 0
    TI__Guru**** 189401 points
    Hi, Brian,

    Good to hear from you!

    For your first question, the conditions at the top of the table say the temperature is 25C.

    For your second question, the values align. The graphs are made from a single device that represents a "typical" device a customer might receive.

    The tabular data is actually an average of a number of devices, so the "typical" value there is actually a misnomer. It is actually the average value of the "n" units we measure.

    Since the plot falls within the min/max values, everything is ok.

    Let me know if you have any other questions!
  • 0 in reply to Don Dapkus
    TI__Guru**** 189401 points
    Hi Brian,

    Can you verify this answer so we can close this thread?
  • 0 in reply to Don Dapkus
    TI__Genius 14120 points

    Thanks for answer.

    One more question. There are Zener diode and Schottky diode in parallel between DESAT and GND pin on the circuit.

    1. What's the purpose of these two diodes?

    2. is there any risky without these two diodes?

    Regards,

    Brian

  • 0 in reply to Brian Wang0928
    TI__Guru**** 189401 points

    Hi, Brian,

    Good to hear from you.

    The purpose of these diodes is discussed in section 10.2.2.1.

    Those two diodes prevent the voltage spikes caused during switching from damaging the IC. The parasitic inductance in the circuit will cause spikes that could damage that pin. A Schottky diode to ground is used to keep the voltage on the pin within the Absolute Maximum ratings of the DESAT pin.

    I highly recommend you add the network on the DESAT pin, otherwise there is a high likelihood the IC could become damaged.

    Let me know if you have any other questions!