Quartus® Prime Pro Edition User Guide: Power Analysis and Optimization

ID 683174
Date 4/01/2024
Document Table of Contents

1.5.6. Vectorless Estimation Power Analysis Flow

For some device families, the Power Analyzer automatically derives estimates for signal activity on nodes with no simulation or user-entered signal activity data.

Vectorless estimation statistically estimates the signal activity of a node based on the signal activities of nodes feeding that node, and on the actual logic function that the node implements. Vectorless estimation cannot derive signal activities for primary inputs. Vectorless estimation is accurate for combinational nodes, but not for registered nodes. Therefore, the Power Analyzer requires simulation data for at least the registered nodes and I/O nodes for accuracy.