Datasheet

www.ti.com

Board Layout

Figure 7. PWM Operation at 200 mA With V

= 12 V

3 Board Layout

This section provides the TPS61170EVM board layout and illustrations.

3.1 Layout

Board layout is critical for all switch-mode power supplies. Figure 8 and Figure 10 show the board layout

for the HPA280 printed-circuit board. The switching nodes with high-frequency noise are isolated from the

noise-sensitive feedback circuitry. Careful attention has been given to the routing of high-frequency

current loops. See the data sheet for further layout guidelines.

SLVU222C–December 2007–Revised September 2009 TPS61170EVM-280

Submit Documentation Feedback