MOSFET PURPOSE

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  • irfan karatela
    Member
    • Oct 2024
    • 13
    • united kingdom
    #1

    MOSFET PURPOSE

    I'm looking at the PS5 motherboard, and have come across 2 mosfets, I want to understand the purpose of the 2nd mosfet as the source is connected to GND and the drain is connected to 5v. wouldn't this short the 5v rail once the 2nd mosfets gate is enabled?

    Thanks
    Attached Files
    Tags: None
    • harp
      Badcaps Veteran
      • Jun 2022
      • 598
      • Planet Earth
      #2
      Maybe some type of switching power supply... I see coil on the right...
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        • truclacicr
          Badcaps Veteran
          • Apr 2019
          • 299
          • australia
          #3
          The ground-connected MOSFET is used as a freewheeling diode in a stepdown DC-DC converter. The other MOSFET is the chopper for the positive supply.

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