Hello,
We're in the process of designing our new electronics and have decided to go with the TPS62160-Q1 for our power supplies; 3.3V and 5V. We went with a larger inductor and output capacitor in order to reduce the output voltage ripple to <1mv. The combination isn't in the recommended components and isn't listed in the loop stability table (http://www.ti.com/lit/an/slva463a/slva463a.pdf
I've posted our schematic and pcb below. We gave a global +3.3V plane and the VOS input for the 3.3V DC/DC is connected to this plane, as opposed to a single trace (as it's done for the 5V). Could this cause any issues? I'm also unsure about the GND vias. We're trying to keep a single point of entry in order to minimize GND noise and current loops, but unsure where if there is an optimal place to put them.
Are there any other possible issues that we didn't think of? A quick look by a trained eye would be most appreciated! Thanks.