cyclone 3 fpga current rating

[Altera_Forum]

Hi, 

I am designing power module for cyclone 3 fpga(EP3C40F484) In that I need to know ICCint(core current for core voltage of 1.2 v). when i use webench power architect.it shows 4.7A. i think it is much higher then the required.can i use 1.2v at 3A regulator.any idea :) Thanks in Advance.  Regards, Shahul 

[Altera_Forum]

I wonder, how webbench power architect can answer the question of your design's core current consumption? It can't know about. The device manual tells: 

  --- Quote Start ---  Altera offers two ways to estimate power for a design: the Excel-based Early Power Estimator and the Quartus II PowerPlay Power Analyzer feature.  --- Quote End ---    Except for a small idle current, the core current is only dependant on logic activity: number of switching logic cells times core frequency. Most designs have a moderate core current consumption, because only a small number of logic cells is permanently switching.

[Altera_Forum]

Hi FVM, 

i have Excel-based Early Power Estimator tool. i don't know how to give data to it. please give me some idea about it.   i also have its user manual but i am not clear with its information.  Regards, Shahul

[Altera_Forum]

Hi Shahul, 

 Even I am required to find instantaneous current(power) consumption of an altera UP3 board. Did you get any clues regarding this?  Thanks, Amjad

[Altera_Forum]

Hi amjath, 

sorry I have no idea regarding that.Any how power estimator tool will be helpful.  http://www.altera.com/support/devices/estimator/cy3-estimator/cy3-power_estimator_download.html (http://www.altera.com/support/devices/estimator/cy3-estimator/cy3-power_estimator_download.html)  Regards, shahul

[Altera_Forum]

Thanks Shahul for the prompt reply. I will look into it. :) 

 -Amjad