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Power board design with one input, multiple output sources, GND separation question

Category: Hardware
Product Number: LTM8055

I am designing a board for multiple channel outputs on a single board.
It outputs 28V/3A, 12V/6A, 7.4V/20A, 5V/3A, and among them, 28V and 12V use LTM4656 and LTM8055 respectively.
I want to block noise from 12V and other voltages.
Will it be effective if I design it by separating GND for each output?
Can I connect each GND to a 0ohm resistor or ferrite?
If I connect it with ferrite, what will be the selection criteria?
There is only one power input source.

Additionally, would it be okay to separate the output GND with a 0 ohm resistor?

  • Hello Tellon,

    In board design with multiple uModules, generally, the converters share a common ground plane. Larger ground planes and short connections are ways to minimize noise. Noise can also be minimized by separating the various outputs from each other with ground copper between them and placing capacitors close to each converter.

    Regards,
    Wesley