PCB track/pad size calculation with mosfet

Discussion in 'General Electronics Chat' started by Vindhyachal Takniki, Sep 1, 2016.

  1. Vindhyachal Takniki

    Thread Starter Member

    Nov 3, 2014
    349
    6
    1. I am working on application in which there are CHG & DSG mosfet in circuit. I can connect any no of mosfet for CHG or dsg.
    CHG & DSG fets are in series so equal current flows through them.
    2. In my circuit I have to design it for 10A application. VGs for both CHG & DSG fets are guranted to be 10V always. selected FDS6690A mosfet for this. Will use 3 parallel mosfets for CHG & 3 for DSG.
    3. This webiste: http://www.4pcb.com/trace-width-calculator.html
    gives idea for PCB trace width for current specified.
    4. Now looking at datasheet of mosfet, how much trace/pad length I should use for 10A so that temperature rise should not be more than 20C & ambient temp is 25C?
     
  2. seanstevens

    Member

    Sep 22, 2009
    25
    1
    Using the ElectroDroid app, it indicates the trace should be 4.724mm (186 mil) track resistance would be 5.542m Ohm, Voltage drop 55.421mV.

    Hope that helps.
     
  3. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    seanstevens likes this.
  4. Vindhyachal Takniki

    Thread Starter Member

    Nov 3, 2014
    349
    6
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