Method for selecting decoupling capacitors from power supply distribution network on basis of maximum anti-resonance point
A technology of power distribution network and decoupling capacitors, which is applied in the direction of instruments, electrical digital data processing, special data processing applications, etc., can solve the problems of large number of capacitors, affecting calculation speed, large redundancy, etc., and achieve reduction of calculation times, The effect of reducing the number of uses and shortening the calculation time
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[0037] The present invention is described in detail below in conjunction with the accompanying drawings:
[0038] refer to figure 1 , the present invention comprises the steps:
[0039] Step 1, parameter preprocessing
[0040] 1.1) The computer reads the parameters of the printed circuit board and the chip input by the user. The read parameters include: the equivalent resistance R1 and the equivalent inductance L2 of the connection between the ground pin of the chip power supply and the printed circuit board; the equivalent inductance L2; the decoupling capacitor has been installed. The diffusion inductance L2 and diffusion resistance R2 between the hole and the chip power supply ground installation via hole; the maximum current I of the chip, the supply voltage V and the ripple coefficient r; the equivalent resistance R3 and the equivalent inductance L3 of the voltage regulator module on the printed circuit board; Equivalent resistance R4 and equivalent capacitance C3 of th...
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