topic Re: PMIC PCA9450 in PowerQUICC Processors

PMIC PCA9450

ChienNQ — Mon, 31 Jul 2023 08:32:33 GMT

Hi NXP team,

In out application we use PMIC (PCA9450 and IMX8M Plus)

We want to use the power plug feature that the device will automatically start (meaning the user does not need to press any key to start) so how do we need to configure the hardware?

Thanks and best regards,

Re: PMIC PCA9450

riteshmpatel — Mon, 31 Jul 2023 09:44:20 GMT

Hi @ChienNQ,

I hope you are doing well.

One needs to assert the PMIC_ON_REQ signal from the processor to turn on the PMIC and its respective power rails.

One can refer to the i.MX8M Plus EVK schematic and follow the same.

I hope it helps.

Thanks & Regards,
Ritesh M Patel

Re: PMIC PCA9450

ChienNQ — Tue, 01 Aug 2023 01:10:20 GMT

Hi Ritesh,

Thanks for your support.

Could you please explain the behavior of this signal(PMIC_ON_REQ and ONOFF signal
) in detail?

Thanks and best regards,

Trend Nguyen

Re: PMIC PCA9450

ChienNQ — Tue, 01 Aug 2023 01:11:08 GMT

Hi Ritesh,

Thanks for your support.

Could you please explain the behavior of this signal(PMIC_ON_REQ and ONOFF signal
) in detail?

Thanks and best regards,

Trend Nguyen

Re: PMIC PCA9450

riteshmpatel — Tue, 01 Aug 2023 04:57:48 GMT

Hi @ChienNQ,

For PMIC_ON_REQ signal understanding, one can refer to the PCA9450 PMIC Datasheet.

For ONOFF signal understanding, one can refer to Section 6.5.2 Functional Description of the i.MX8MP Reference Manual.

I hope it helps.

Thanks & Regards,
Ritesh M Patel