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TPS54120: TPS54120 with 6V output

Part Number: TPS54120


I am using the TPS54120 with a 12V input and I want a 6V output. I have calculated the feedback resistors of the switcher to give a 6.5V input to the LDO. When I power up the circuit I only see around 6V going into the LDO input. I have attached the schematic. Can someone comment if the values I have used look OK? If they are can someone suggest some things to check.