Buck/Boost converter TPS63070RNMT is not working properly
Found the issue and resolved it.
GND pins of C14 and C15 must be connected directly to PGND pin of U6 (Pad between L1 &amp; L2) on the top layer. It is important to make a good GND star connection, the inductor lines for L1 and L2 nets are not so critical, they can go to the inductor through vias and another layer.