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TPS552882EVM-400KHZ: Issue turning on the converter with 15W load and 3V input

Part Number: TPS552882EVM-400KHZ
Other Parts Discussed in Thread: TPS552882


I tried to use the TPS552882EVM-400K dev board without any modification, with a load of 15W and a VIN under 4V but the dev board doesn't start. This specs say that it's possible to use the dev board with a low voltage input down to 2.7V. 

Do you have a clue why it didn't work?