• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 31 subscribers
  • Views 305 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.

TAS2770: Power Limiter function without battery tracking

Diego UA&A
Prodigy 120 points
Part Number: TAS2770


Hi, Team,

We are using the TAS2770 in one of out projects with line-powered supply of 16V and 4Ω load. We would like to use the power limiter of this device, but it is not clear if there is a way to bypass the VBAT tracking to use the limiter in standalone operation. Could you please confirm if it is possible to use the power limiter function without the monitoring of VBAT?

Thanks!

  -Diego Meléndez

  • 0
    TI__Guru* 84915 points

    Hi, Diego!

    Thank you for contacting us.

    Our team will take a look at this and will provide a response as soon as possible.

    Best regards,
    Luis Fernando Rodríguez S.

  • 0
    TI__Guru** 110655 points

    Hi Diego,

    I think there are two ways to do what you need on TAS2770 limiter:

    • One approach is as described in data sheet page 40: set the desired max level with LIM_TH_MAX, then set inflection point below the minimum allowable VBAT using LIM_INF_PT. This way LIM_TH_MIN will not impact the limiter behavior.
    • Another approach is to set LIM_TH_MAX and LIM_TH_MIN to the same value, although this is something I haven't tested. Let me know if this approach is of your interest so I can verify its correct operation.

    Please let me know if you have any further questions.

    PD. Really good to hear from you, have a good week!

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

  • 0 in reply to Ivan Salazar
    Prodigy 120 points

    Hi, Ivan,

    I wasn't sure who is supporting the '2770 now but is great to see you here. Hope we can meet soon!

    Thanks for your reply, I did some experiments with our board and the first option is working, so probably we will be ok for now.

    I'll let you know if I find any issues with the configuration or if any other questions with this device arise. 

    Have a great week!

    Best Regards

      -Diego Melendez