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

4.3. Temperature

To calculate the thermal information of the device correctly, you must enter the ambient air temperature for the device into the Early Power Estimator (EPE) spreadsheet. Ambient temperature refers to the temperature of the air around the device, which is usually higher than the ambient temperature outside of the system. For an accurate representation of ambient temperature for the device, you must measure the temperature as close to the device as possible with a thermocouple device.

If you enter incorrect ambient air temperature, you can drastically alter the power estimates in the EPE spreadsheet. The following figure shows a simple system with the FPGA housed in a box. In this case, the temperature is very different at each of the numbered locations.

Figure 28. Temperature Variances

For example, location 3 is where the ambient temperature pertaining to the device should be obtained for input into the EPE spreadsheet. Locations 1 and 2 are cooler than location 3 and location 4 is likely close to 25 °C if the ambient temperature outside the box is 25 °C. Temperatures close to devices in a system are often in the neighborhood of 50–60 °C but the values can vary significantly. To obtain accurate power estimates from the EPE spreadsheet, you must get a realistic estimate of the ambient temperature near the FPGA device.

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