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TPS7A4501-SP: Using PCB thermal calculator

John B
Intellectual 325 points
Part Number: TPS7A4501-SP

Hi, I just found PCB thermal calculator. In which we need to enter the device number, the parameter theta-jc-bottom is automatically updated. Then we need to enter the power dissipation and the system reference or ambient temperature. It gives a graph of temperature vs PCB copper coverage area. I am not able to understand this PCB copper coverage area. Can some please explain how to use and work with PCB copper coverage area ? 

https://www.ti.com/design-resources/design-tools-simulation/models-simulators/pcb-thermal-calculator.html

  • +1
    TI__Genius 10960 points

    Hi,

    Copper coverage refers to the area of the copper available on the PCB for heat to spread into underneath the IC - basically, if your PCB has more copper to sink heat into it helps keep temperatures down. It looks like there is a document on that page that describes the definitions a bit more and explains important factors and design considerations.

    Thanks,

    Sarah