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High density drivers?

Discussion in 'Electronic Design' started by dave94024, Feb 17, 2007.

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  1. dave94024

    dave94024 Guest

    I have an application that requires Totem pole type drivers to deliver
    ~1A for <1us. I need a lot of these setup in essentially a long chain
    of H bridges into non-inductive loads. There is nearly no duty cycle
    to speak of, each driver energized every few seconds or less (only
    while in use).

    I can of course do this with discretes but I have to make it as small
    as practicable. I'll be driving these drivers with 5v logic from a
    microcontroller. I need nearly a 100 of these high/low drivers and
    have looked at various solutions. This is not for a long-term product
    and I'm willing to exceed the rating of the parts in question (as long
    as they'll survive for a few months of sporadic use, figure 1000
    activations tops (for each driver)).

    Any thoughts or suggestions?

  2. John  Larkin

    John Larkin Guest

    How much output voltage? There are some SO-8 (or dip8) dual mosfet
    gate drivers that might work.

    What's the application?

  3. dave94024

    dave94024 Guest

    How much output voltage? There are some SO-8 (or dip8) dual mosfet
    The loads are 5-6 ohms each and there's one set of drivers on either
    side, so we need whatever voltage is required to drive a little over 1
    amp through the load (accounting for the RdsOn of the gates or the
    diode drops of transistors (if we're using them)).

    I was using some dual Mosfets up till now without any problems (in an
    even smaller package actually), but I'm looking for something denser
    if possible.

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