UM0422

Board layout

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Board layout

The following main guidelines should be followed for the board layout:

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The sense resistor must be placed as close as possible to feedback and ground pins.

The traces should be as short as possible.

●

STCS1 exposed pad area should be as large as possible to improve power dissipation.

If a 2-layer PCB is used, one layer should be assigned as ground layer and a good

connectivity between both layers should be observed.

Figure 6, Figure 7 and Figure 8 show the board layout for the STCS1 constant current

control evaluation board.

Figure 6.

Assembly layer

Figure 7.

Top layer