Powering FPGAs with linear and switching regulators

Field-Programmable Gate Arrays, or FPGAs, have become widely used, universal components. However, these versatile devices require a favorable electrical current to get the full use of their capabilities. One of the basic requirements of an FPGA power source is to generate the necessary supply voltages in the highest quality possible. Switching and linear regulators are excellent choices for powering FPGAs effectively. Generally, the supply voltages needed for FPGAs are lower than those being fed to the board. When low voltages need to be generated from higher voltage levels, there are two basic approaches: linear regulation or switched mode regulation, which uses the buck regulator architecture. Depending on a given design, there are cases when linear regulators outperform switch mode regulators and vice versa.

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