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LM26420-Q1: SCH review

Part Number: LM26420-Q1

Hi Team,

Could you please help to review this SCH?

  • Hi Amelie,

    There are some comments on the schematic.

    I would suggest using the inductor value between 1uH to 1.5uH. Is there any specific reason for the high inductor and Output capacitor value as the total capacitor on one rail is around 247uF?  

    It seems feedback divider is quite far for the FB pin as I cant see in the schematics. For feedback regulation, the feedback loop should be shorter and near to the device. Otherwise, the device might not regulate properly.

    The input has an additional inductor that forms an additional resonant tank there with input capacitor and it might cause the oscillation on device performance and might need proper damping circuit.

     

    Best regards,

    Tanvee

  • Hi Amelie,

    I am closing the thread as I didn't hear back for a long time. If you would like to discuss further offline through the mail than feel free to reach out. I have shared my mail id with you.

    Best regards,

    Tanvee