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Altera_Forum's avatar
Altera_Forum
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10 years ago

DE1-SOC Power Consumption

Hello all,

I measured power consumption from 12v AC/DC adapter, here are the results:

fpga configured from EPCS with default demo 0.3A

fpga configured from EPCS with default demo + sd inserted 0.42A

fpga configured from HPS with no SD 0.25A

fpga configured from HPS with SD with Linux Console 0.37A

fpga configured from HPS with SD with Linux Console with ethernet cable connected 0.51A

fpga configured from HPS with SD with Linux Console with ethernet cable connected + cpu1 100% 0.52A

fpga configured from HPS with SD with Linux Console with ethernet cable connected + cpu1 100% + cpu2 100% 0.53A

With fpga only are 12*0.3=3.6W, a lot of power. Someone can confirm this is normal and my board is not wrong? Where go all of this power?

Power consumption seem a lot of independent from cpu load... this seem hard to be right!

Anyway with 12*0.5A=6W an heatsink is indinspensable when using ARM cores!

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    I did some amount of power consumption in idle mode of IC on DE1-SOC:

    component description voltage current power

    AD7928 adc 3.3 0.0027 0.00891

    WM8731 audio codec 3.3 0.0002 0.00066

    Si5350C-B clock 3.3 0.085 0.2805

    43TR16256A-85120AL ddr3 sdram 0.08

    EPCS128 flash 3.3 0.0003 0.00099

    ksz9021rl ethernet 1.2 0.015 0.018

    3.3 0.045 0.1485

    ADXL345 accelerometer 3.3 0.00014 0.000462

    IS42R16320D fpga sdram 3.3 0.05 0.165

    FT232R uart to usb 3.3 0.015 0.0495

    USB2512B 3.3 0.05 0.165

    USB3300 3.3 0.025 0.0825

    1.8 0.046 0.0828

    ADV7123 video dac 3.3 0.08 0.264

    ADV7180 video decoder 0.044

    USB Blaster usb blaster 3.3 0.1 0.33

    Total 1.720822

    I don't know if this numbers are so realistic... but 1.7W is what is left from PowerPlay Early Estimator that say me that system take 1.7W (max not typical but cyclone v yield make max typical) :)

    (Clock), Ethernet and Video DAC are very power-hungry :(