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Honored Contributor
Honored ContributorCyclone IV GX FPGA Development Kit Power Supply. Why so sophisticated?
Why Power Supply on "Cyclone IV GX FPGA Development Kit" is so sophisticated? Why not use simple 3-pin LDO instead of multi-pin Linear Regulators used on this Kit? A picture from "Cyclone IV GX ...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- Why Power Supply on "Cyclone IV GX FPGA Development Kit" is so sophisticated? --- Quote End --- 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. --- Quote Start --- Why not use simple 3-pin LDO instead of multi-pin Linear Regulators used on this Kit? --- Quote End --- 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
