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LM5155: On the Making of Transformers

Part Number: LM5155

HI,

I'm using the LM5155 to design a circuit with a 5V input and a 12V 3A output. However, I have no idea how to design the transformer. Here is my schematic diagram. Could you provide the winding number so that I can also apply for a custom transformer? I hope it can help me solve the problem.

Thanks in advance

kind regards

liu

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