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TPS54302: About Feed-Forward Capacitor.

watanabe
Expert 1740 points
Part Number: TPS54302

Hi,

My customer have a question.

Q.

In Table 2 of datasheet P17, C6 (C8 is a typo?) Is 100pF.

Why is it different from the result calculated from Equation (14) (16)?

Best Regards,

-watanabe

  • 0
    TI__Intellectual 2795 points

    Table 8 C8=100pF for 12V out is correct and this was bench verified. As for the equation (14) calculate the crossover frequency, it is just simple estimation, always have some difference compared with the test, as for the equation (16), configure the zero introduced by CFF close to crossover frequency, it is normal design guideline.