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Xilinx FPGAs provide a tremendous amount of design flexibility. Because they are so versatile, defining your power requirements isn’t as straightforward as simply reading an input voltage and load current requirement. You have core rails, auxiliary rails, bank rails and more that provide power to different portions of the chip. Some of these voltages are fixed and some are adjustable to unlock better performance or allow you to set I/O voltage levels compatible with other devices you want ...