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TPS54061: TPS54061 EN “Enable high to start switching time”

Part Number: TPS54061

Hi Team,

On datasheet there is a spec called “Enable high to start switching time”.

Do it mean EN pin need to keep high level more than 450us? Or the delay time from EN to SW is 450us?

Because customer will have noise on EN pin, it's <5us but may below or about the EN trigger voltage. Will this cause issue to Vout?

What's the least stable requirement time for EN to work?

Thank you!

Marc