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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

    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.
    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

    How much current do you need to control?

    John Bordynuik
    john at
  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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