Mosfet driver circuit

Discussion in 'Embedded Systems and Microcontrollers' started by torpedo2k3, Jul 19, 2009.

  1. torpedo2k3

    Thread Starter New Member

    Jul 19, 2009
    1
    0
    hello
    i want to build a driver circuit( without using driver IC) for two mosfet that are to be placed at tranformer secondary winding of LLC resonant converter instead of normal pn diode.Mosfets are required to turnon and turn off alternatively(much like full bridge rectifier) with changing polarity of center tapped transformer (24 volt secondary )...any idea or any webpage to tell how to make this driver circuit ?
     
  2. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,699
    907
    It appears you want to build a synchronous rectifier. Have you searched on mosfet drivers? Almost every mosfet manufacturer has an application note on the subject. Here is one from Texas Instruments:

    http://focus.ti.com/lit/ml/slup169/slup169.pdf

    Figures 9 and 10 do not use IC drivers.

    John
     
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