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5V MOSFET driver

Discussion in 'Electronic Design' started by nospam, Mar 1, 2007.

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  1. nospam

    nospam Guest

    I have an application driving a solenoid with a MOSFET H bridge.

    A 5v supply would be enough to drive the bridge and the power is moderate
    so I could probably build the bridge with logic level complimentary
    MOSFETS.

    The drive will be PWM at around 20 or 30kHz so the MOSFETS need to switch
    fast and I need to drive them hard.

    Anyone have suggestions for a 5v buffer to drive the gates? Preferably
    cheap and 4 in a package. I was thinking some HC logic bus driver might be
    up to the job.
    --
     
  2. Microchip makes the TC4423, TC4424, and TC4425 low-side gate drivers, they
    have high side as well.
    http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName=en010666
    They are duals, but perhaps they have some quad packages with both. They're
    $2 each sngl qty at Digikey.
     
  3. John Bordynuik selects " I have an application driving a solenoid with a
    MOSFET H bridge. "

    I would recommend using VNH3SP30. I know you mentioned you are looking for
    _just_ drivers but I have used this part to reduce valuable board real
    estate.

    How much current do you need to control?

    John Bordynuik
    JBI
    john at johnbordynuik.com
     
  4. nospam

    nospam Guest

    Interesting chip (or actually 3 chips in one package) but it is very much
    targeted towards driving motors. It isn't specified operating below 9v so
    it isn't a solution for me.

    --
     
  5. nospam

    nospam Guest

    The Microchip range looks promising. They have a quad lowside driver.
    Thanks for the suggestion.
    --
     
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