IM8MP Leakage Power Issue in Shutdown State.

[MJD]

Hi @nxp,

We are working with a custom board based on the i.MX8MP, with a PMIC circuit similar to the EVK.

We have connected an LED board to the GPIO3_IO16 pin, as shown in the attached design, along with the PMIC circuit. However, we are observing an issue: there is leakage power to the LED board even when the system is in a shutdown state. Out of the total 8 LEDs, one LED still glows faintly during shutdown.

Could you please assist us in identifying and resolving the cause of this leakage power?

Thank you!

MJD_0-1733550068170.pngMJD_1-1733550091768.png

[Rita_Wang]

What kind of LED board are you using? Could you share us how it connect to i.MX8MP , you'd better share this section of the shematic to us 

[MJD]

Hi @Rita_Wang Led Schematic attached bellow 

MJD_0-1733821429364.png

[Rita_Wang]

Hi @MJD ,

Could you share use all the i.MX8MP design to us? We need to check your design, to see the pins design in your side? Thanks

Sorry for late reply, I was on annual days leave and back to office now, I will following your questions now.

Wish you have a nice day

Best Regards

Rita

[Rita_Wang]

how it connect to i.MX8MP? Could you also share it? Thanks

[MJD]

We have connected DIN pin of LED board to the GPIO3_IO16 pin.