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3 Board Layout
3.1 Layout
Board Layout
Figure 4. Load Transient Response From 100 mA to 200 mA With C4 = 10 µ F and C3 = 82 pF
This section provides the TPS6108xEVM board layout and illustrations.
Board layout is critical for all switch-mode power supplies. Figure 5 , Figure 6 , and Figure 7 show the
board layout for the HPA147 PWB. The switching nodes with high-frequency noise are isolated from the
noise-sensitive feedback circuitry, and careful attention has been given to the routing of high-frequency
current loops. See the data sheet for further layout guidelines.
Figure 5. Top Assembly Layer
SLVU144 – January 2007 TPS6108xEVM-147 5
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