• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 63 subscribers
  • Views 298 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.

BQ79718-Q1: OTUT Protection

Tugay Sengul
Prodigy 45 points
Part Number: BQ79718-Q1

Hello TI family,

I am editing the register map on the BQ79718 IC.

GPIO_CONFn --> I set the GPIOs to (Only ADC) or (ADC andOTUT input).

I adjusted and tested my voltage protection settings with OVUV_GO,OV_THRESH, UV_THRESH, OVUV_CTR OVUV_MODE, . FAULT is high outside the threshold values.

I have NTCs connected at GPIO5,GPIO8,9,10,11. I want FAULT to be active according to temperature threshold values with OTUT_GO,OTUT_THRESH,OTUT_CTRL but it did not happen.It happens when I do it through the GUI of BQ79718. It doesn't happen when I edit it myself in Register Map. What's the solution? What am I doing wrong.

  • 0
    TI__Expert 3760 points

    Hi,

    Sometimes when writing to the register map the values appear to update but do not. What happens when you use the command tab to do the same thing?

    Best,

    Nancy

  • 0 in reply to Nancy Hidalgo
    Prodigy 45 points

    Hi,

    Right. Register Map sometimes crashes and does not update. I can change register values from the Command Sequence section. I tried changing all my registers again. I set the OTUT_THRESH and OTUT_CTRL2 register values. I did not receive a FAULT signal when the NTC I was using exceeded 17% or 86%. Instead, when I did it from the section in the picture below, I was able to get a FAULT signal.

    When I press the RUN OTUT button in the Temperature Protection section, which registers and in what order does the GUI send?

    I'm waiting for your feedback. Respects

    Tugay

  • +1
    TI__Expert 3760 points

    Hi,

    The sequence seems to be:

    1. Configure GPIO inputs to ADC/OTUT inputs by writing to the GPIO_CONFx registers

    2. Set the OTUT protector mode (round robin mode) by writing to [OTUT_MODE] bits 

    3 Set the OTUT thresholds by writing to the OTUT_THRESH register

    4. Start the OTUT protection by setting the [OTUT_GO] bit to 1

    Please let me know if you run into additional issues. 

    Best,

    Nancy

  • 0 in reply to Nancy Hidalgo
    Prodigy 45 points

    Hi,

    My problem is solved. Cannot be controlled by register map. This is problematic for the system. In the Command Sequence section, I addressed the registers respectively and set the OTUT_GO bit high. The system worked. Thank you for your interest.

    Regards,

    Tugay