Transistor switching frequency MOSFET

Discussion in 'The Projects Forum' started by martinpotter1, Nov 15, 2012.

  1. martinpotter1

    Thread Starter New Member

    Nov 15, 2012
    1
    0
    How do you determine an appropriate transistor switching frequency for a MOSFET? I am designing a power converter for a DC motor with four quadrant operation and I am struggling to work out a suitable switching frequency.

    Regards

    Martin
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,009
    3,233
    For a motor, normally you make it fairly low for good efficiency, perhaps a few hundred Hz, but if there's any concern about audible noise, you may want it above 20KHz.
     
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