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Why Power Supply on "Cyclone IV GX FPGA Development Kit" is so sophisticated?
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What do you consider it sophisticated? The Pin Connection Guidelines for each FPGA describes how Altera recommends powering the FPGA. Multiple linear regulators are required to generate and/or isolate the required voltages.
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Why not use simple 3-pin LDO instead of multi-pin Linear Regulators used on this Kit?
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FPGAs have a power-on requirement that the power rails ramp in a well-defined time period. Multi-pin linear regulators generally have enable and soft-start functions that can be used to aid in power-on sequencing. A simple 3-pin linear regulator does not provide this functionality.
Cheers,
Dave
Honored Contributor
