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Measurement for multiple power rails

Thread Summary

The user inquires about measuring multiple power rails using a single ADALM2000. The final answer confirms that the LTpowerAnalyzer System can only measure one rail at a time, suggesting to connect to the target rail and keep other rails under constant load. The configuration diagram for this setup is provided.
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If it is possible, please kindly advise the fixed configuration to measure the multiple power rails by single ADALM2000 ?

Jerry

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  • Hi Jerry,

    Would you happen to be asking about conducting a Bode Plot measurement with the LTpowerAnalyzer System? If yes, this would depend on the power device configuration you are trying to perform the measurement with.

    Typically, for multiple-output rail devices, the LTpowerAnalyzer System can only perform the Bode Plot measurement with one of the rails at a time. This means that you have to select one of the rails to perform the measurement. For this, it is recommended to perform the connections to one of the target output rails then place the other output rails under constant loading condition (Depends on DUT overall loading setup you want to measure). Below is a diagram for the recommended setup:

    (Image) Configuration diagram for multiple output-rail devices.

    I hope this helps!

    Let me know if you have any further clarification.

    Regards,

    Darz

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  • Hi Jerry,

    Would you happen to be asking about conducting a Bode Plot measurement with the LTpowerAnalyzer System? If yes, this would depend on the power device configuration you are trying to perform the measurement with.

    Typically, for multiple-output rail devices, the LTpowerAnalyzer System can only perform the Bode Plot measurement with one of the rails at a time. This means that you have to select one of the rails to perform the measurement. For this, it is recommended to perform the connections to one of the target output rails then place the other output rails under constant loading condition (Depends on DUT overall loading setup you want to measure). Below is a diagram for the recommended setup:

    (Image) Configuration diagram for multiple output-rail devices.

    I hope this helps!

    Let me know if you have any further clarification.

    Regards,

    Darz

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