Intel® Quartus® Prime Standard Edition User Guide: Design Recommendations

ID 683323
Date 9/24/2018
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3.2.1.1.1. Typical and Worst-Case MTBF of Design

The MTBF Summary Report shows the Typical MTBF of Design and the Worst-Case MTBF of Design for supported fully-characterized devices. The typical MTBF result assumes typical conditions, defined as nominal silicon characteristics for the selected device speed grade, as well as nominal operating conditions. The worst-case MTBF result uses the worst case silicon characteristics for the selected device speed grade.

When you analyze multiple timing corners in the timing analyzer, the MTBF calculation may vary because of changes in the operating conditions, and the timing slack or available metastability settling time. Intel recommends running multi-corner timing analysis to ensure that you analyze the worst MTBF results, because the worst timing corner for MTBF does not necessarily match the worst corner for timing performance.