i.MX ProcessorsのトピックRe: IM8MP Leakage Power Issue in Shutdown State.

IM8MP Leakage Power Issue in Shutdown State.

MJD — Sat, 07 Dec 2024 05:42:02 GMT

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!

Re: IM8MP Leakage Power Issue in Shutdown State.

Rita_Wang — Tue, 10 Dec 2024 08:53:36 GMT

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

Re: IM8MP Leakage Power Issue in Shutdown State.

MJD — Tue, 10 Dec 2024 09:05:50 GMT

Hi @Rita_Wang Led Schematic attached bellow

Re: IM8MP Leakage Power Issue in Shutdown State.

Rita_Wang — Tue, 10 Dec 2024 09:09:31 GMT

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

Re: IM8MP Leakage Power Issue in Shutdown State.

MJD — Tue, 10 Dec 2024 09:22:06 GMT

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

Re: IM8MP Leakage Power Issue in Shutdown State.

Rita_Wang — Tue, 17 Dec 2024 08:53:20 GMT

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