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TPS54040 application

Hi Team,

my customer series 8uH inductor in input, according to this application, input L and C will resonance cause to big ripple in input my questioin below,

1. how to reduce the input ripple (max input caps is 14uH and inductor fix to 8uH)

2. i try to series 100Kohm and 50nF from comp pin to input, the input ripple can reduce to 29mV peak to peak, is this application have any side effect?

Thank you