Hello All,
There is a D-PAK on the top of the PCB. The heatsink plane is attached to the bottom of the PCB. How much power could be possible to dissipate at this D-PAK, i.e. what would be the ballpark of Rt ?
The PCB is double sided 2oz 1.5mm FR-4. The area of the solid copper around the part is 1 sq.in. on the top and bottom. It is possible to put as many plated vias as we want. The heatsink plane temperature can be considered to be uniform; the Rt is 2C/W.
Vladimir Vassilevsky DSP and Mixed Signal Design Consultant
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