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TPS65251: Do you have any calculator for peripheral parts selection like Webench?

Kazuya Nakai59
Guru 21075 points
Part Number: TPS65251

Hello guys,

One of my customers is considering using TPS65251 as a FPGA power supply of their new products.

They are looking for a calculator for peripheral parts selection like Webench or Excel base file?

Do you have any calculator?

Your reply would be much appreciated.

Best regards,

Kazuya.  

  • 0
    TI__Expert 7520 points

    Hi Kazuya

    Zhao is looking into this and will feedback to you soon.

    BR

    Ruby

  • 0 in reply to Ruby Li
    TI__Prodigy 560 points

    Hi, Kazuya

    Here is a calculator for peripheral parts selection in EXCEL.

    5531.TPS65251 Comp Cal.xlsx

  • 0 in reply to Chris Peng
    Guru 21075 points

    Hi Chris, Ruby,

    Thank you very much for your supports and the excel sheet.

    Could I ask you the following questions?

    Q1. I can see 3 tables named buck1,buck2 and buck3 in the excel file. What is different between these tables?

    Q2. Which parameters need to be input by customer for the device peripheral parts calculation? Are those the values in yellowed section?

    Q3.  What is "F_sw to crossover factor"? Is this parameter needed to modify by customers?

    Could you please give me your reply?

    Thank you again and best regards,

    Kazuya

  • 0 in reply to Kazuya Nakai59
    TI__Prodigy 560 points

    Hi Kazuya，

    Q1： The calculation formula for the three Bucks is the same. The difference is the output voltage, current and F_sw to crossover factor.

    Q2: Yes, add the F_sw to crossover factor.

    Q3:The  F_sw to crossover factor is the t cross over frequency factor. The suggest range of F_sw to crossover factor is 0.05 to 0.4.

  • 0 in reply to Chris Peng
    Guru 21075 points

    Hi Chris,

    Thank you very much for your reply.

    It is very helpful for the customer and me.

    Thank you again and best regards,

    Kazuya.