i.MX6 Thermal ?

[Chicago1984]

Looking at a thermal table on the imx6, there are junction to case and junction to package top resistances.  Is the package top some internal, inaccessible feature and in a normal situation I need to use junction-case?  What is the point of putting junction to package top?

[Yuri]

  Please look at section 3 [Psi-jt (Ψjt) Junction-to-Top of Package] of the next app note
for some details about Junction-to-Top of Package parameters.

http://www.ti.com/lit/an/spra953b/spra953b.pdf

The app note AN4579 provides useful thermal considerations.

AN4579 (i.MX 6 Series Thermal Management Guidelines)

http://cache.freescale.com/files/32bit/doc/app_note/AN4579.pdf

Have a great day,
Yuri

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