What is the purpose of “MOSFET driver” IC's

Discussion in 'Analog & Mixed-Signal Design' started by kittoo, Jul 20, 2016.

  1. kittoo

    Thread Starter New Member

    Jul 11, 2016
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    There are dedicated "MOSFET driver" IC's available . Some also control IGBTs. What is the practical purpose of these? Is it all about maximizing the switching speed (driving gate capacitance) or are there other motives?
     
  2. Sensacell

    Well-Known Member

    Jun 19, 2012
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    The main purpose is to provide level shifting and high current drive to charge and discharge the gate capacitance as rapidly as possible.
     
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  3. MaxHeadRoom

    Expert

    Jul 18, 2013
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  4. JMac3108

    Active Member

    Aug 16, 2010
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    Yes, providing the drive current to charge/discharge the gate capacitance for purposes of switching speed.
     
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  5. #12

    Expert

    Nov 30, 2010
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    The gate driver IC does an excellent job of delivering high current pulses, cheaper, faster, and smaller than you can do it with single transistors.
     
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  6. BobTPH

    Active Member

    Jun 5, 2013
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    They also allow you to use N channel MOSFETs for high side switches.

    Bob
     
  7. MaxHeadRoom

    Expert

    Jul 18, 2013
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