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LM25122-Q1: input current oscillation

Part Number: LM25122-Q1

Hi~ team.

Based on LM25122-Q1 EVM or TIDA reference design, input current oscillation happen only under low input voltage(<9V).

Input, output voltage, output current is also stable, but input current looks start oscillation under 9V,

would you please advise what should I check for?

(Yellow:Vin, Green Vo, Pink:Iout, Cyan:Iin)