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TPS65218EVM-100: DCDC1/2 for TPS65218EVM

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Replies: 3

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Part Number: TPS65218EVM-100

Hello all,

I'm using TPS65218EVM and IPG-GUI. I'm going to change output voltage for DCDC1 and 2.

But both DCDCs were not changed. Output voltage for other DCDCs and LDO were changed.

Plese tell me how to change output voltage by using TPS65218EVM and IPG-GUI.

Best Regards.,

Mitsharu Iwasaki

  • Hi,

    Thank you for using E2E. I have assigned this thread to the application engineer that can assist you.

    Can you provide what steps you are using to change the voltage for DC1 and DC2?

    Thanks,
    Nastasha


    --------------------------------------------------
    For more information on Multi-Channel Power Management ICs: http://www.ti.com/pmic

    Find the right power solution for your processor or FPGA: www.ti.com/SoCPower

     

  • In reply to Nastasha:

    Hello Nastasha,

    Thank you for replying. Yes, DC1 and DC2.

    Best Regards.,

    Mitsharu Iwasaki

  • In reply to Mitsuharu Iwasaki55:

    Iwasaki-san,

    DCDC1 and DCDC2 has 3 Notes for changing voltage.

    • Note 1: This register is password protected. For more information, see Section 5.6.1.
    • Note 2: A 5-ms blanking time of the overvoltage and undervoltage monitoring occurs when a write is performed on the DCDC2 register.
    • Note 3: To change the output voltage of DCDC2, the GO bit or the GODSBL bit must be set to 1b in register 0x1A.

    Note 3 is probably the reason you see DCDC3 and DCDC4 change voltage but not DCDC1 or DCDC2, because DCDC3 and DCDC4 are not dependent on the "GO" bit value and only have Notes 1 and 2 for changing voltage.

    The IPG-UI will automatically handle writing the Password to unlock registers, but it will not automatically set the GO bit.

    Thanks & Best Regards,

    Brian

    Find the right power solution for your processor or FPGA. Visit  www.ti.com/SoCPower today!

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