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TIDA-010054: design

NETHRAA KUMAR
Prodigy 160 points
Part Number: TIDA-010054


Tool/software:

Hi,

In blocking capacitor how 100 cames at the top.It is simple high pass filter formula

  • 0
    TI__Expert 4440 points

    Hi,

    Thanks for reaching out. 
    The blocking capacitor should not impact the voltage drop across the lead inductor, since the voltage across the inductor control the power flow.
    Therefore, we defined the voltage drop across the blocking capacitor should be 100 times smaller than the voltage drop across the inductor.
    Using Vcap = 1/(2*pi*Fs C) * I and VL = 2*pi*Fs*L * I, we can define VL = 100 * Vcap, and solve for C, since I is equal for the capacitor and the inductor. This will result in the above equation.

    Best regards,

    Andreas