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TPS63901: Calculation of inductor parameters

zunuran nasrullah
Intellectual 290 points

Part Number: TPS63901

Tool/software:

I am calculating the inductor peak current parameter so that I can select appropriate inductor for my application. But in Equation5 of the datasheet, We need duty cycle value in boost mode. But I could not find duty cycle value in the datasheet. Can you help me find duty cycle value? For 5V input and 3.3V, 100mA output DFE201210U-2R2M is a good choice? I have very small 10X12mm device ultra low power. Previously I used XFL4020-222ME . But due to space constraint I want to switch it to  DFE201210U-2R2M. Please suggest me appropriate solution. Thanks

  • 0
    TI__Mastermind 32350 points

    Hi,

    A more effective and rensonable way to select a suitable inductor is by the typical current limit of device, for this device, the typical current limit is 1.45A and DFE201210U-2R2M is absoluty ok for this device.

    Regards

    Tao