Hi,
Please verify the attached layout for TPS543C20RVFT, Vin-12V, Vout-0.85V. Schematics is attached for reference.
Thanks
/cfs-file/__key/communityserver-discussions-components-files/196/TPS543C20RVFT_5F00_1.pdf
/cfs-file/__key/communityserver-discussions-components-files/196/TPS543C20RVFT.brd