Datasheet

Board Layout

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3 Board Layout

Board layout is critical for all switch mode power supplies. Figure 3, Figure 4, and Figure 5 show the board

layout for the HPA063 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 more specific layout guidelines.

To ensure that the IC provides its maximum designed output power, it is highly recommended that

users follow the EVM board layout when laying out their boards, especially the separate analog

and power ground paths and the small footprint, closely spaced feedback components.

Figure 3. Top Assembly Layer

TPS65131EVM User's Guide SLVU119C–February 2005–Revised December 2010

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