Early Power Estimator for Intel® Cyclone® 10 LP FPGAs User Guide

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ID 683743
Date 5/08/2017
Public
Document Table of Contents
Document Table of Contents x
1. Overview of the Early Power Estimator for Intel® Cyclone® 10 LP 2. Setting Up the Early Power Estimator for Intel® Cyclone® 10 LP 3. Early Power Estimator Worksheets for Intel® Cyclone® 10 LP 4. Factors Affecting the Accuracy of the Early Power Estimator for Intel® Cyclone® 10 LP
1. Overview of the Early Power Estimator for Intel® Cyclone® 10 LP x
1.1. Power Model Status 1.2. Document Revision History
2. Setting Up the Early Power Estimator for Intel® Cyclone® 10 LP x
2.1. System Requirements 2.2. Download and Install the Early Power Estimator 2.3. Estimating Power Consumption 2.4. Document Revision History
2.2. Download and Install the Early Power Estimator x
2.2.1. Changing the Macro Security Level in Microsoft Excel* 2003 2.2.2. Changing the Macro Security Level in Microsoft Excel* 2007 2.2.3. Changing the Macro Security Level in Microsoft Excel* 2010
2.3. Estimating Power Consumption x
2.3.1. Estimating Power Consumption Before Starting the FPGA Design 2.3.2. Estimating Power Consumption While Creating the FPGA Design 2.3.3. Estimating Power Consumption After Completing the FPGA Design
2.3.1. Estimating Power Consumption Before Starting the FPGA Design x
2.3.1.1. Entering Information into the Early Power Estimator 2.3.1.2. Manually Entering Values
2.3.2. Estimating Power Consumption While Creating the FPGA Design x
2.3.2.1. Importing a File 2.3.2.2. Generating the Early Power Estimator (EPE) File 2.3.2.3. Importing Data into the Early Power Estimator (EPE) Spreadsheet
3. Early Power Estimator Worksheets for Intel® Cyclone® 10 LP x
3.1. Cyclone® 10 LP EPE - Main Worksheet 3.2. Cyclone® 10 LP EPE - Logic Worksheet 3.3. Cyclone® 10 LP EPE - RAM Worksheet 3.4. Cyclone® 10 LP EPE - DSP Worksheet 3.5. Cyclone® 10 LP EPE - I/O Worksheet 3.6. Cyclone® 10 LP EPE - PLL Worksheet 3.7. Cyclone® 10 LP EPE - Clock Worksheet 3.8. Cyclone® 10 LP EPE - Report Worksheet 3.9. Cyclone® 10 LP EPE - Enpirion Worksheet 3.10. Document Revision History
3.1. Cyclone® 10 LP EPE - Main Worksheet x
3.1.1. Input Parameters 3.1.2. Thermal Power 3.1.3. Power Tree Design 3.1.4. Thermal Analysis
3.1.4. Thermal Analysis x
3.1.4.1. Not Using a Heat Sink 3.1.4.2. Using a Heat Sink
3.8. Cyclone® 10 LP EPE - Report Worksheet x
3.8.1. Static Power and Dynamic Current per Voltage Rail 3.8.2. Power Up Current 3.8.3. Power Breakout for Multiple Voltage Supplies 3.8.4. Power Regulator Settings
4. Factors Affecting the Accuracy of the Early Power Estimator for Intel® Cyclone® 10 LP x
4.1. Toggle Rate 4.2. Airflow 4.3. Temperature 4.4. Heat Sink 4.5. Document Revision History
1. Overview of the Early Power Estimator for Intel® Cyclone® 10 LP
2. Setting Up the Early Power Estimator for Intel® Cyclone® 10 LP
3. Early Power Estimator Worksheets for Intel® Cyclone® 10 LP
4. Factors Affecting the Accuracy of the Early Power Estimator for Intel® Cyclone® 10 LP

3.1.4.1. Not Using a Heat Sink

When you do not use a heat sink, the major paths of power dissipation are from the device to the air. You can refer this as a junction-to-ambient thermal resistance. In this case, there are two significant junction-to-ambient thermal resistance paths:
  • From the device through the case to the air
  • From the device through the board to the air
Figure 6. Thermal Representation without a Heat Sink

In the model used in the Early Power Estimator (EPE) spreadsheet, power is dissipated through the case and board. The θJA values are calculated for differing air flow options accounting for the paths through the case and through the board.

Figure 7. Thermal Model in the EPE Spreadsheet without a Heat Sink

The ambient temperature does not change, but the junction temperature changes depending on the thermal properties; therefore the junction temperature calculation is an iterative process.

The following equation shows the total power calculated based on the total θJA value, ambient, and junction temperatures.

Figure 8. Total Power

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