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Original question:

FUSION_DIGITAL_POWER_DESIGNER: Power Sequencing Chart in Offline Mode

UCD9090-Q1: Are there any reference design for UCD90XXX

旭峰 胡
Prodigy 40 points
Part Number: UCD9090-Q1
Other Parts Discussed in Thread: UCD9090

Hi, I'm now working on UCD90XXX series chips for Xilinx FPGA power sequencing.

I have read the datasheet of ucd9090-q1、"Fusion Digital Power Designer GUI 7.0 for the UCD90xxx Sequencer User's Guide".

But  I still have a lot of doubts when I use TI‘s tools to design real project.

for example ,I don't have enough information to match the "title“ in below image to the real hardware pins.

Are there any reference design，which can help me to slove this problem.

Thx！

  • +1
    TI__Guru 58090 points

    Hi

    The title is the function of the IO. please refer the attached quick guide.

    2133.UCD90xxx 简易使用手冊.pptx

    Regards

    Yihe

  • 0 in reply to yihe
    Prodigy 40 points

    Hi yihe

    Thanks for ur reply,  it is useful to solve my doubts.

    There's  a new question after I read the attachment your given.

    In step 1, we input the voltage  which will be monitored. It is the real voltage value after voltage divider circuit.

    Why shoud we provide the  voltage divider informations in step 4, again?

  • 0 in reply to 旭峰 胡
    TI__Guru 58090 points

    Hi

    We recommend the voltage before divider. if you put the voltage after the divider, then the scale shall be set to 1 instead of real ratio.

    UCD9090 can only monitor up to 2.5V voltage, so for any voltage larger than this value, a external voltage divider is required so that a proper value can be monitored. Having the step4(scaling ratio) can allow customer to input the voltage before the divider at the step 1.

    Regards

    Yihe