Article ID: 000073964 Content Type: Troubleshooting Last Reviewed: 03/12/2018

Can I sum currents from multiple shared power supply pin types and enter them into a single supply pin type using the Intel® PDN Tool?

Environment

  • Intel® Quartus® Prime Pro Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    No, you cannot sum currents from multiple shared power supply pin types and enter them into a single supply pin type using the Intel® Power Distribution Network (PDN) Tool.

    Resolution

    The Intel PDN Tool uses the number of pins, and package parasitic information for the chosen device to calculate the effective impedance. Summing shared currents and entering this into a single power supply pin type causes the spreading inductance to be miscalculated. You should always enter the correct current for each supply pin type on your Intel FPGA design into the Intel PDN Tool.

    Example 1

    If a shared 1.2v supply consisting of VCCIO2A and VCCIO2B each draw 0.3A totalling 0.6A, you should not enter 0.6A for VCCIO2A, and 0A for VCCIO2B.

    You should enter 0.3A for VCCIO2A, and 0.3A for VCCIO2B.

    Example 2

    If a shared 1.03v supply consisting of VCCR_GXBL1C, VCCR_GXBL1D, VCCT_GXBL1C, and VCCT_GXBL1D draw 0.5A, 0.5A, 0.2A, and 0.2A respectively, you should not enter 1A for VCCR_GXBL1C, and 0.4A for VCCT_GXBL1C.

    You should enter VCCR_GXBL1C = 0.5A, VCCR_GXBL1D = 0.5A, VCCT_GXBL1C = 0.2A, and VCCT_GXBL1D = 0.2A.

    Related Products

    This article applies to 6 products

    Arria® V FPGAs and SoC FPGAs
    Intel® Arria® 10 FPGAs and SoC FPGAs
    Cyclone® V FPGAs and SoC FPGAs
    Intel® Cyclone® 10 FPGAs
    Stratix® V FPGAs
    Intel® Stratix® 10 FPGAs and SoC FPGAs