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How to measure power consumption for individual power rails on the i.MX 8M Mini LPD4-EVK?

Hi,

I have the i.MX 8M Mini LPD4-EVK up and running, and I would like to perform power consumption measurements on specific independent power rails, such as VDD_1V8 and NVCC_DRAM_1V1.

I have located the corresponding PMIC outputs (BUCK8 and BUCK7) on the schematic, but I noticed that there are no onboard shunt resistors (sense resistors) for these lines.

Could you please advise on the best method to measure the current (or power) for these rails?

Thanks!

Re: How to measure power consumption for individual power rails on the i.MX 8M Mini LPD4-EVK?

Hello,

In the case of i.MX8MM we do not have a board to do the power measurement in each power rail as occurs in other boards such as i.MX 8M Plus Evaluation Kit Enabling Power Measurement.

If you need to measure this you need to design a new SOM board to include these shut resistors or maybe you could try to rework the board to add a shunt resistor in a trace.

You can use the schematics of the mentioned board as reference to add the resistors and do the measurement.

i.MX 8M Plus Power Measurement Board Design Files

Best regards.

Re: How to measure power consumption for individual power rails on the i.MX 8M Mini LPD4-EVK?Okay, thanks.