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LM5146-Q1: LM5146

Part Number: LM5146-Q1
Other Parts Discussed in Thread: LM5146

hello,

we designed 12V buck Convertor based on LM5146.

After Connecting Inductor (Pi filter C_L_C)input side of chip i am getting Oscillation of input voltage.

After removing inductor circuit  operate normally.

I am doing simulation on Cadence Orcad Capture.

please suggest solution.