Power Tree Input Supply Voltage
Most FPGA inputs require a voltage of ≤3.3V. Building an FPGA power tree from a low voltage input source often allows for a smaller, more efficient system. If you use an input source of 12V or higher, or if the Early Power Estimator (EPE) spreadsheet estimates the total FPGA current consumption is very high, Intel recommends that you use a two-stage voltage solution, where:
- A first-stage power converter converts a high voltage to a lower intermediate voltage, and
- A second-stage power converter converts the intermediate voltage to the final FPGA input voltages
You must determine the input supply voltage and voltage architecture before you select power converters.
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