TUSB8041: How to calculate or know power dissipation to calculate Junction temperature?

Manuel Oapina

Part Number: TUSB8041

Hello

I have been checking the datasheet of TUSB8041 and I can not find a parameter that lets me know what is the power this device consume. I am trying ro do this because I want to calculate the juction temperature for this device and the equations require a power value.

I am taking the equations from this APP note http://www.ti.com/lit/an/spra953c/spra953c.pdf

Thank you for your help

over 6 years ago

0 JMMN over 6 years ago

TI__Guru 60870 points

Hi Manuel,

Table 7-7 in the TUSB8041 datasheet lists the current consumption of the hub in various states.

Regards,

JMMN

0 Manuel Oapina over 6 years ago in reply to JMMN

Prodigy 30 points

Hello Thank you so much for your answer, I found it right there where you said 7.7

Do you think I can calculate the Junction temperature using this formula number (8) and number (9) from this document http://www.ti.com/lit/an/spra953c/spra953c.pdf\

Thank you

0 JMMN over 6 years ago in reply to Manuel Oapina

TI__Guru 60870 points

Hi Manuel,

Yes, that should be valid. Let me know if you have any issues or the calculation yields and unexpected value.

Regards,

JMMN

0 Manuel Oapina over 6 years ago in reply to JMMN

Prodigy 30 points

Thank you

No issues, I used the formulas and measured the case temperature and the board temperature and values are good

Thanks

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TUSB8041: How to calculate or know power dissipation to calculate Junction temperature?