topic Re: iMX8M series Power sequence in i.MX Processors

iMX8M series Power sequence

sahilnayak — Wed, 24 Jun 2020 04:25:25 GMT

Hi Team,

We are going to use iMX8M series processor in our application. As per power sequence mentioned in the IMX8MDQLQCEC document, we will power VDD_SOC with external regulator and to power VDD_ARM voltage we will use SW1A/B output of PMIC PF4210. We don't have requirement of GPU/VPU, so to power VDD_GPU/VPU, we will use SW1C output of PMIC. Please confirm if the power sequence is okay.

Regards,

Sahil Nayak

Re: iMX8M series Power sequence

sahilnayak — Mon, 29 Jun 2020 05:35:32 GMT

Hi,

Any update on this??

Re: iMX8M series Power sequence

Rita_Wang — Mon, 29 Jun 2020 06:55:36 GMT

I will confirm it for you.

Re: iMX8M series Power sequence

sahilnayak — Tue, 30 Jun 2020 09:53:22 GMT

Hi Rita,

Please confirm the power sequence.

Attached is the image of power topology for more clarification.

Re: iMX8M series Power sequence

sahilnayak — Wed, 01 Jul 2020 02:53:52 GMT

Hi Rita,

As we have critical timeline for the design phase, please confirm on the above asap, so we can move forward on it.

Thanks & Regards,

Sahil Nayak

Re: iMX8M series Power sequence

Rita_Wang — Wed, 01 Jul 2020 04:04:30 GMT

OK， I will give you reply as soon as possible.

Re: iMX8M series Power sequence

sahilnayak — Thu, 02 Jul 2020 03:40:02 GMT

Hi Rita,

Awaiting for your quick response.

Re: iMX8M series Power sequence

Rita_Wang — Thu, 02 Jul 2020 05:50:43 GMT

Hi Sahil Nayak ，

Sequence is OK, power topology is important,so if possible, please do not remove the circuit of external regulator for VDD_ARM,just DNP. when the power is OK after validation then remove.

Have a nice day

Best Regards

Rita