SWRS170L March 2014 – May 2025 WL1807MOD , WL1837MOD
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The TI module uses µvias for layers 1 through 6 with full copper filling, providing heat flow all the way to the module ground pads.
TI recommends using one big ground pad under the module with vias all the way to connect the pad to all ground layers (see Figure 9-5).
Figure 9-5 Block of Ground Pads on Bottom Side of PackageFigure 9-6 shows via array patterns, which are applied wherever possible to connect all of the layers to the TI module central or main ground pads.
Figure 9-6 Via Array Patterns