topic Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB in i.MX Processors

Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Wed, 23 Oct 2024 05:03:39 GMT

Hi everyone,

I'm designing a schematic based on the NXP imx6ull MCIMX6Y2DVM09AB processor and I'm looking for some help from the NXP community.

Specifically, I'm interested in the following areas:

Power supply scheme: How many different voltages are required for the imx6ull MCIMX6Y2DVM09AB processor? What are the typical voltage levels and current requirements for each voltage?
Power supply sequence: What is the recommended power supply sequence for the imx6ull MCIMX6Y2DVM09AB processor? Are there any specific timing requirements or considerations?
Component selection: How do I select the right components for the power supply section? What are the key factors, such as voltage regulators, capacitors, and inductors?
Schematic design guidelines: Are there any specific guidelines or best practices for designing a schematic for the imx6ull MCIMX6Y2DVM09AB processor?

I would greatly appreciate any advice or insights you can provide. I appreciate any help you can provide.

Best regards,

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Rita_Wang — Wed, 23 Oct 2024 07:16:34 GMT

You can refer to our reference design and hardware design guide document, and following our datasheet, following the power on/off sequnce.

Do you need to choose use PMIC IC or not?

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Wed, 23 Oct 2024 07:24:01 GMT

Yes, I want to choose PMIC, so please recommend and can you please explain to me a power on/off sequence?

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Wed, 23 Oct 2024 09:09:27 GMT

Yes, I want to choose to use PMIC, Please suggest.

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Wed, 23 Oct 2024 09:39:01 GMT

Please share reference design file and suggest PMIC IC

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Rita_Wang — Thu, 24 Oct 2024 03:03:48 GMT

Details you can see in our datasheet:

For the design with PMIC, I email to you.

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Thu, 24 Oct 2024 03:25:51 GMT

Thank You so much for your response.
I am using DDR3L SDRAM so, any special power supply required to manage DDR3L in the NXP datasheet mentioned is 1.35V.

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Thu, 24 Oct 2024 04:18:48 GMT

Can you please verify the PMIC Parts number?
MC32PF1550A0EP

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Rita_Wang — Thu, 24 Oct 2024 05:34:38 GMT

Yes, for DDR3L the power is 1.35, You can use the DDR3L on the i.MX6ULL just following the Hardware Development Guide for the i.MX 6ULL Applications Processor.

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Rita_Wang — Thu, 24 Oct 2024 05:37:52 GMT

Yes, it is PMIC with 1A Li+ Linear Battery Charger | NXP Semiconductors

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Thu, 24 Oct 2024 05:41:01 GMT

Thank You so much for your support!

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Thu, 24 Oct 2024 06:18:21 GMT

I am using DDR3L and am a little bit confused about the VDD_SOC_IN voltage configuration. According to a datasheet, its range is from 1.15V to 1.3V. So, which voltage is suitable for my application?

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Rita_Wang — Thu, 24 Oct 2024 07:55:04 GMT

PMIC can out put what the voltage you want for the VDD_ARM_SOC_IN, so you do not care about it, if you choose the PMIC in your design.

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Thu, 24 Oct 2024 08:03:02 GMT

But, I don't know exactly which voltage is chosen for VDD_SOC_IN.

Does it affect DDR3L if I choose 1.05V or 1.225V?

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Rita_Wang — Tue, 29 Oct 2024 08:12:35 GMT

For the VDD_SOC_IN it need 1.275 to 1.5 for 528MHz for A7 core work, and 1.375 to 1.5 for 900MHz for A7 core work.

From the design I share to you, you can see that for the VDD_SOC_IN it is supply from the SW1 of the PF1550.

From the PF1550 datasheet you can see that the SW1 can supply:

SW1, 1.0 A; 0.6 V to 1.3875 V in 12.5 mV steps, or 1.1 V to 3.3 V in variable steps

So it can supply what the VDD_SOC_IN need, so you do not know what the exactly the value it is.

PMIC with 1A Li+ Linear Battery Charger | NXP Semiconductors

PF1550, Power management integrated circuit (PMIC) for low power application - Data sheet

For the DDR3L, the Voltage is 1.35V, and the power for the DDR is from NVCC_DRAM power, DDR will effect by it:

Re: Designing a schematic for NXP imx6ull MCIMX6Y2DVM09AB

Nikunj_Solanki — Tue, 29 Oct 2024 08:44:59 GMT

Thank You so much for your support.