LM5155-Q1: Schematic design

user4622345

Part Number: LM5155-Q1

Hi experts,

For EMI performance, is there any need to add a capacitor across the MOSFET as below when LM5155-Q1 is designed for a SEPIC circuit? Thank you.

over 4 years ago

0 Brigitte over 4 years ago

TI__Guru 61175 points

Hello user4622345,

It is good practice to add an RC network in parallel to the MOSFET if needed due to EMI issues. In general I would start without populating it as it adds losses.

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LM5155-Q1: Schematic design