1. Answers to Top FAQs 2. Overview of the Intel® FPGA Power and Thermal Calculator 3. Estimating Power Consumption with the Intel® FPGA Power and Thermal Calculator 4. Intel® FPGA Power and Thermal Calculator Graphical User Interface 5. Intel® FPGA Power and Thermal Calculator Pages 6. Factors Affecting the Accuracy of the Intel® FPGA PTC 7. Intel® FPGA Power and Thermal Calculator User Guide Archive 8. Document Revision History for the Intel® FPGA Power and Thermal Calculator User Guide A. Measuring Static Power
5.1. Intel® FPGA PTC - Power Summary 5.2. Intel® FPGA PTC - Common Page Elements 5.3. Intel® FPGA PTC - Main Page 5.4. Intel® FPGA PTC - Logic Page 5.5. Intel® FPGA PTC - RAM Page 5.6. Intel® FPGA PTC - DSP Page 5.7. Intel® FPGA PTC - Clock Page 5.8. Intel® FPGA PTC - PLL Page 5.9. Intel® FPGA PTC - I/O Page 5.10. Intel® FPGA PTC - Transceiver Page 5.11. Intel® FPGA PTC - HPS Page 5.12. Intel® FPGA PTC - Crypto Page 5.13. Intel® FPGA PTC - HBM Page 5.14. Intel® FPGA PTC - Thermal Page 5.15. Intel® FPGA PTC - Report Page
A. Measuring Static Power
Follow these steps to measure static power in your design.
- Verify that the device is properly configured and in user mode. (CONF_DONE, NSTATUS, NCONFIG, and INIT_DONE values should be high.)
- Wait until a stable junction temperature (thermal equilibrium) is reached.
- Use of a thermally controlled chamber is recommended.
- You can measure the junction temperature of the FPGA using the on-chip temperature sensing diode (TSD). Refer to your device documentation for details on using the TSD. Alternatively, you can measure the junction temperature with the Intel® Agilex™ Temperature Sensor IP Core, but with reduced accuracy.
- If a thermally controlled chamber is not available, use temperature feedback from the on-chip TSD or Intel® Agilex™ Temperature Sensor IP Core to control a heat sink fan to achieve a desired junction temperature.
- You can also use a heat gun to achieve a desired temperature; however, this method offers less thermal control.
- Keep all inputs constant and do not toggle any I/Os or any clock signals (except for the clock to the Intel® Agilex™ Temperature Sensor IP Core, if you are using the Intel® Agilex™ Temperature Sensor IP Core to measure temperature.)
- Depending on the board design, you can measure static current in one of several ways:
- Use a regulator with the ability to measure voltage drop across a shunt resistor, and query the power measurement through the power management bus (PMBus)/system management bus (SMBus) interface.
- If a regulator with PMBus/SMBus support is not available, you can measure the voltage drop across the shunt resistor manually for each power supply and calculate the current from the voltage drop.
- If you use an external power supply, query the current measurement from the power supply according to the manufacturer's specifications.
- If you want to isolate and understand the static power component of your design's total power consumption, take several current measurements across a range of temperatures and record the junction temperature of each measurement. Refer to the junction temperatures to correlate static power measurements with their corresponding total power measurements.
- The silicon static power measurements can be compared with the static power estimate from the Intel® Quartus® Prime Power Analyzer report or the static values shown on the Report tab in the Intel® FPGA Power and Thermal Calculator.
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