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MOSFET SELECTION FOR 1Kw load

CHETHAN SRINIVAS
Prodigy 20 points

Hi, I need help selecting a mosfet for my application.  details are as given below.

V= 410 volts, Ipeak =7 amps, fs=100Khz, Dmax=68% (bridge circuit).

I need to understand what information need to be considered from Datasheet and get assured that a particular mosfet is a right fit for my application.

Thank you 

Regards 

Chethan

 

  • 0
    TI__Expert 6815 points
    Chethan,

    With an input voltage of 410V in a bridge type topology, most likely you will need a 600V or 650V MOSFET, TI does not have these voltage silicon MOSFETs. We do have a 600V Gallium Nitride device sampling now with a driver and FET integrated into one product if you are interest here: www.ti.com/.../overview.html

    As for the things to consider to select your correct MOSFET you will need to run some powerloss equations based on your topology, then you can determine if the part you choose is capable of the power dissipation. FET datahseets contain the powerdissipation capability and all the parametrics to enable you to calculate the powerloss.
    If you want a silicon device then something in the 100mOhm range is where I would start to look to produce ~1kW power.

    Chris
  • 0 in reply to Chris Bull
    Prodigy 20 points

    Thank you very much, Chris.