• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 669 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.

TAS5630B - Operating temperature range

M.Gopi Naga Bharath
Prodigy 210 points

Other Parts Discussed in Thread: TAS5630B, TPA3116D2

Hello,

We are using TAS5630B Power Amplifier for one of our product which is in the prototyping stage. The product must operate with in the temperature range of -20 to 50 deg C.

From the datasheet of TAS5630B, we have noticed that its operating junction temperature is 0 to 150 deg C. But I couldn't find the operating ambient temperature of the TAS5630B in its datasheet. However, I could see that the device storage temperature is -40 to 150 deg C.

I would like to get the answers for the below:

1) What is the operating ambient temperature of TAS5630B?

2) Will TAS5630B be able to operate in the conditions of -20 to 50 deg C?

3) Given the TAS5630B is a heat generating component, will it be okay to operate it in the ambient temperature of -20 to 50 deg C?

4) If the device is operable at -20 to 50 deg C, will its power be degraded or low quality at the temperatures of -20 deg C?

5) Will the junction temperature of the device be rising, if the it is held in reset mode? How much power will the device be dropping, in reset mode?

Please let me know if any further information is required?

Thanks in advance.

 

Regards,

Gopi

  • 0
    TI__Expert 7925 points

    Hi, Gopi. Thank you for posting to the Audio Amplifiers forum.

    I'd like to refer you to some material on the thermal parameters that TI uses for characterizing its chips. This can help you estimate how a chip would perform in a given ambient environment knowing the chip's operating temperature range.

    To answer your questions,

    1. This is highly variable. Please refer to the material linked above on how to properly estimate the ambient temperature range for your application.
    2. TI can't guarantee operation for junction temperatures below 0 °C for this part. TI can only guarantee the listed 0 – 150 °C operating temperature range listed in the data sheet.
    3. For temperatures between –20 °C and 0 °C ambient, it is possible the junction temperature will not be in the specified range, and therefore not guaranteed to operate. You can estimate a junction temperature given a power dissipated in the chip, ambient temperature information, and thermal parameters, as explained in the literature linked above.
    4. Operation below 0 °C in the junction temperature is not characterized and therefore uncertain. I can't say what the chip would do.
    5. When a device like this one is in shutdown, the current through the chip is not enough to reliably keep a chip warm. I would not rely on this to put a chip into cold temperature operation. The power dissipated in shutdown or standby is very small.

    I hope this gives you an idea of the limits this application is running up against.

    Best Regards,
    Matt

  • 0 in reply to Matt Lauer
    Prodigy 210 points

     Hi Matt,

    Thanks for the information.

    The document mainly describes about the terminologies & calculations of the thermal parameters.

    Does TI have the same/similar chip with the industrial temperature grade?

     

    Regards,

    Gopi

     

     

     

     

     

     

  • 0 in reply to M.Gopi Naga Bharath
    TI__Guru**** 189401 points

    Hi, Gopi,

    The closest thing we have is the TPA3116D2 which is considerably lower power than the TAS5630B.

    Our chips are developed for use in consumer electronics where 0-70C is an acceptable temperature range.

    -d2