Ultra-Quiet, 1.8V, 1A Design for the Kintex Ultrascale FPGA

This reference design provides a power-supply circuit with an input voltage of 3.3V, an output voltage of 1.8V, and an output current of 1A using the MAX8869 low-dropout linear regulator. The circuit was developed to power a MGTVCCAUX rail on a Xilinx^® Kintex^® Ultrascale™ FPGA. Included in this reference design are a schematic and a bill of materials.

Design Specifications and Setup

Schematic

Features

• Input Voltage: 3.3V
• Output Voltage: 1.8V
• Output Current: 1A
• Output-Voltage Ripple: 5mV
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