DocID027887 Rev 2

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STPA008

General information

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4.5

Heat sink definition

Assuming a power dissipation of 26 W (e.g. in the worst case situation of frequent clipping

available temperature gap for a correct dissipation is 80 °C.

The junction to case thermal resistance is 1 °C/W. So the heat sink thermal resistance

should be approximately 2 °C/W. This would avoid any thermal shutdown occurrence even

after long-term and full-volume operation.