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LM5155: SEPIC reference design for Negtive output

Part Number: LM5155
Other Parts Discussed in Thread: LM5022

Hi team

My customer use the LT3704 original. I want to use LM5155 to replace. Do you have a reference design for the below spec?

Due to webench can not meet the topology. thanks 

Spec below.


Vo= -15V