Early Power Estimator User Guide

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ID 683272
Date 7/16/2021
Public
Document Table of Contents
Document Table of Contents x
1. Early Power Estimator Overview 2. Setting Up the Early Power Estimator 3. Early Power Estimator Worksheets 4. Factors Affecting the Early Power Estimator Spreadsheet Accuracy A. Additional Information for Early Power Estimator User Guide
1. Early Power Estimator Overview x
1.1. Release Information 1.2. Power Model Status for Supported Device Families
2. Setting Up the Early Power Estimator x
2.1. System Requirements 2.2. Download and Install the Early Power Estimator 2.3. Estimating Power Consumption
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
2.3.1.1. Entering Information into the Early Power Estimator x
2.3.1.1.1. Manually Entering Values
2.3.2. Estimating Power Consumption While Creating the FPGA Design x
2.3.2.1. Importing a File
2.3.2.1. Importing a File x
2.3.2.1.1. Generate the EPE File 2.3.2.1.2. Import Data into the EPE Spreadsheet
3. Early Power Estimator Worksheets x
3.1. Main Worksheet 3.2. Logic Worksheet 3.3. RAM Worksheet 3.4. DSP Worksheet 3.5. I/O Worksheet 3.6. PLL Worksheet 3.7. Clock Worksheet 3.8. HSDI Worksheet 3.9. XCVR Worksheet 3.10. HMC Worksheet 3.11. IP Worksheet 3.12. HPS Worksheet 3.13. Report Worksheet 3.14. Enpirion Worksheet
3.1. Main Worksheet x
3.1.1. Input Parameter 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
3.13. Report Worksheet x
3.13.1. Static Power and Dynamic Current per Voltage Rail 3.13.2. Power Up Current 3.13.3. Power Breakout for Multiple Voltage Supplies 3.13.4. Power Regulator Settings
4. Factors Affecting the Early Power Estimator Spreadsheet Accuracy x
4.1. Toggle Rate 4.2. Airflow 4.3. Temperature 4.4. Heat Sink
A. Additional Information for Early Power Estimator User Guide x
A.1. Document Revision History for Early Power Estimator User Guide
1. Early Power Estimator Overview
2. Setting Up the Early Power Estimator
3. Early Power Estimator Worksheets
4. Factors Affecting the Early Power Estimator Spreadsheet Accuracy
A. Additional Information for Early Power Estimator User Guide

3.1.3. Power Tree Design

The Power Tree Design section provides the current and voltage from the report page. The power supply grouping is according to the device pin connection guidelines.

Figure 3. Power Tree Design Section in the Main Worksheet

Select a valid configuration from the Power Rail Configuration dropdown. When the Input Parameters and Power Rail Configuration selections are complete, the power regulator selection will be enabled.

The current values shown for each regulator include the margin for regulator selection purpose. For more information, refer to the Enpirion worksheet.

Errors regarding improper rail grouping may appear in the error window on the Main worksheet when the Power Rail Configuration is selected. The following figure shows an example of the error message in the error window.

Figure 4. Error Window in the Main Worksheet

This occurs when the EPE assigns rails with different voltage requirements to the same group. Since each group is supplied by a single regulator, these errors must be corrected before the EPE can make proper component selections. This is done in the EPE Report worksheet. Refer to the Report worksheet on how to correct the error.

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