Hello E2E Experts,
Good day.
Based on the application note, Resistance Junction to Board (in section 4, Page 10) is a more representative value for conduction-to-board cooled components than Resistance Junction to Case (Bot).
Good.
https://www.ti.com/lit/an/spra953c/spra953c.pdf
You state that Resistance Junction to Board includes Junction to Case (Bot).
Makes sense.
So I expect resistance to board to be larger than resistance to case (Bot).
What does not make sense yet:
For the component, I inquired about,
https://www.ti.com/lit/ds/symlink/tps82130.pdf
the Junction to case (bot) is listed as 21.3 C/W
Junction to Board listed as 14.4 C/W
Other TI datasheets have the Junction to Board resistance higher than Junction to Case (bot), as expected.
Example:
https://www.ti.com/lit/ds/symlink/tps1h200a-q1.pdf
Can you help me to understand?
OR
Is this an error in the datasheet?
Thank you for your usual support.
Regards,
CSC