need help about smps

Discussion in 'General Electronics Chat' started by bahramzoom, Oct 8, 2013.

  1. bahramzoom

    Thread Starter New Member

    Jun 27, 2013
    1
    0
    dear friends im trying to drive the H-bridge with a ferrite transformer.but all the ways i tried i couldnt reach the answer.i tried on totem pole and other ways but:(plz help me how to drive and protect my mega mosfets:(
     
  2. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    Your "mega" mosfets MUST be driven with the correct mosfet driver. If not I can guarantee that they will be destroyed.

    The driver must be able to supply 2 -3A into the gate to be able to quickly charge and discharge the gate-source capacitance. There are many integrated single, dual, high-side, low-side, full and half bridge driver I.C.s available. Go to the website of a semiconductor manufacturer and look at their products and application notes. Start with International Rectifier www.irf.com
     
    shortbus likes this.
  3. shortbus

    AAC Fanatic!

    Sep 30, 2009
    4,004
    1,523
    +1 to the solution from JDT. In the old days gate drive transformers were the only solution, but now the best/easiest is a gate driver.
     
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