Forum Discussion
Honored ContributorA question about power analyzer tool
I used power analyzer tool to estimate the power consumption of my design (a vcd file). I find the current flow into VCCINT is nearly 7mA, Since I inserted a resistor in the power supply rail of the VCCINT, and I measured the current flow through the resistor is nearly 12mA. Can someone tell me why there is a big difference between these two values? Thank you very much.
13 Replies
Altera_Forumyou should change Assignments > Settings > Operating Conditions from Typical to Maximum
- Altera_Forum
Thank you for your reply! Except the toggle rate, what else will cause this difference? If there are some references where I can have a look will be better. I have another question. If I changed my microcontroller, like reducing the number of registers, in the theory, Should there be some change in these current values? But I find these values nothing change. When I reduce some registers or reduce some instructions, or even reduce a hardware multiplier. I am not should if I did the wrong thing. Thank you for helping!
- Altera_Forum
It could be because the estimates you gave the power analyser tool (especially toggle rates) where a bit optimistic.
