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LM5155: designing a 24v to 5.45 dc to dc sepic converter using LM5155

Part Number: LM5155

Hello TI Engineers,

I am currently designing a 24 to 5.45V DC to DC converter using sepic topology i have used the quickstart calculator to design the circuit but the gate voltage seems to go down to zero after 5 microseconds. I have attached the converter design below.sepic_converter.TSC