i.MX8M Mini power supply rail @ 1.2V

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i.MX8M Mini power supply rail @ 1.2V

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Contributor II

Hi,

For the i.MX8M Mini processor EVK, the power rail VDD_MIPI_1P2 take the input fom PMIC BD71847AMWV, LDO6 1.2V output (net name- VDD_PHY_1V2).

MIPI supply in my custom board design works on 1.8V  (VDD_MIPI_1P8), as per understanding

- VDD_MIPI_1P2 supply for MIPI interfaces will not be needed so can be kept as unconnected nets.

- are there any other internal processor blocks that will need 1.2V supply?

- I need to interface an ethernet PHY which needs 1.2V and 230mA current. can I route this supply from PMIC BD71847AMWV ?

Please confirm on above and advise on above queries.

Thanks,

Dhara

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NXP TechSupport
NXP TechSupport

Hi Dhara

- VDD_MIPI_1P2 supply for MIPI interfaces will not be needed so can be kept as unconnected nets.

right

- are there any other internal processor blocks that will need 1.2V supply?

no other blocks

- I need to interface an ethernet PHY which needs 1.2V and 230mA current. can I route this supply from PMIC -BD71847AMWV ?

yes

 

Best regards
igor
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Contributor II

Hi Igor,

Many thanks.

The ethernet PHY will utilize 221mA typically and the maximum current capacity of LDO6 in PMIC- BD71847 is 300mA @1.2V.

So if I route this1.2V from PMIC (LDO6) to Ethernet PHY this will work. right?

Can you please check and validate this.

Regards,

Dhara

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NXP TechSupport
NXP TechSupport

Hi Dhara

yes your understandng is right.

 

Best regards
igor

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