The printed-circuit-board (PCB) layout is an
important step to maintain the high performance of
the TPS62A04xA device.
- Place the input and output capacitors and the
inductor as close as possible to the IC. This
action keeps the power traces short. Routing these
power traces direct and wide results in low trace
resistance and low parasitic inductance.
- Connect the low side of the input and output
capacitors properly to the GND pin to avoid a
ground potential shift.
- Take special care to avoid noise being induced.
The sense traces connected to FB is a signal
trace. Keep these traces away from SW nodes.
- Use common ground. GND layers can be used for
shielding.
See Figure 8-13 for the recommended PCB layout.