The printed-circuit-board (PCB) layout is an
important step to maintain the high performance of the TPS62A0x
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.
- The sense
traces connected to FB is a signal trace. Take
special care to avoid noise being induced. Keep
these traces away from SW nodes.
- Use a
common ground. Use GND layers for shielding.
See Figure 8-10 for the recommended PCB layout.