Reference Circuit 6029

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

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

Schematic

Schematic of the MAX8869 linear regulator.
Figure 1. Schematic of the MAX8869 linear regulator.

Hardware Files

Bill of Materials (BOM)

Xilinx and Kintex are registered trademarks and UltraScale is a trademark of Xilinx, Inc.

 
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