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UCD3138HSFBEVM-029: Output current measure

Part Number: UCD3138HSFBEVM-029
Other Parts Discussed in Thread: UCD3138, UCD3138FW-HSFB,


Recently, we received two UCD3138HSFBEVM-029 modules. We connected an input of 48Vdc but we didn’t obtain the 12Vdc at the output. It seemed that the firmware was not loaded in the board. For this reason, we have loaded the firmware UCD3138FW-HSFB — UCD3138 Hard Switch Full Bridge available in the TI website.

After that, we already obtain the correct output of 12Vdc. The only thing that we don’t understand now, is about the output current measure. The output current that shows the Fusion Studio is not the real one. If we have an output current that requires 22A, the Fusion Studio shows that it is about 10A. Which is the problem of that?

Thank you.