![]() ![]() Figure 1 illustrates this concept, where the solid horizontal blue line is the ZTARGET and the dotted vertical brown line is the fTARGET. A reliable decoupling strategy warrants for the effective power rail impedance (ZEFF) to be lower than the ZTARGET from a few KHz up to the highest frequency of interest (fTARGET). The key concept of the FDTIM method is the determination of the target impedance (ZTARGET) for the power rail under consideration. This method is used by the PDN Decoupling Calculator Tool and is the recommended method for determining the board-level decoupling requirements using Intel FPGAs. An efficient strategy for determining the PCB decoupling scheme is to use the Frequency Domain Target Impedance Method (FDTIM). ![]()
0 Comments
Leave a Reply. |