Intel® Quartus® Prime Standard Edition User Guide: Getting Started

ID 683475
Date 12/16/2019
Document Table of Contents

3.7. Plan for Device Power Consumption

You can use the Intel® Quartus® Prime power estimation and analysis tools to estimate power consumption and guide PCB board and system design. You must accurately estimate device power consumption to develop an appropriate power budget and to design the power supplies, voltage regulators, heat sink, and cooling system. You can use the Early Power Estimator (EPE) spreadsheet to estimate power consumption before running a compilation or creating any source code. Then, you can use the Intel® Quartus® Prime Power Analyzer to perform a more accurate analysis after your design is complete.
Note: Because power consumption is heavily dependent on actual design and environmental conditions, make sure to verify the actual power consumption during device operation.

Power estimation and analysis helps you ensure that your design satisfies thermal and power supply requirements:

  • Thermal—ensure that the cooling solution is sufficient to dissipate the heat generated by the device. The computed junction temperature must fall within normal device specifications.
  • Power supply—ensure that the power supplies provide adequate current to support device operation.

Early Power Estimator (EPE) Spreadsheet

The Early Power Estimator (EPE) spreadsheet allows you to estimate power utilization for your design. Estimating power consumption early in the design cycle allows planning of power budgets and avoids unexpected results when designing the PCB.

Figure 24. Early Power Estimator (EPE) Spreadsheet

You can manually enter data into the EPE spreadsheet, or use the Intel® Quartus® Prime software to generate device resource information for your design.

To manually enter data into the EPE spreadsheet, enter the device resources, operating frequency, toggle rates, and other parameters for your design. If you do not have an existing design, estimate the number of device resources used in your design, and then enter the data into the EPE spreadsheet manually.

If you have an existing design or a partially completed design, you can use the Intel® Quartus® Prime software to generate the Early Power Estimator File (.txt, .csv) to assist you in completing the EPE spreadsheet.

The EPE spreadsheet includes the Import Data macro that parses the information in the EPE File and transfers the information into the spreadsheet. If you do not want to use the macro, you can manually transfer the data into the EPE spreadsheet. For example, after importing the EPE File information into the EPE spreadsheet, you can add device resource information. If the existing Intel® Quartus® Prime project represents only a portion of your full design, manually enter the additional device resources you use in the final design.

Intel® Quartus® Prime Power Analyzer

After you complete your design, you can use the Intel® Quartus® Prime Power Analyzer to perform a complete post-fit power analysis to check the power consumption more accurately. The Power Analyzer provides an accurate estimation of power, ensuring that thermal and supply limitations are met.