Voltage difference between VDD_ARM_CAP and VDD_SOC_IN

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Voltage difference between VDD_ARM_CAP and VDD_SOC_IN

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kladu
Contributor II

Hi,

we are using i.MX6ULL with fixed power supplies (not PMIC). Datasheet (Table 10, Page 24) claims that VDD_SOC_IN MUST be 125 mV higher than the LDO Outputs.

Difference between VDD_SOC_IN and VDD_ARM/SOC_CAP at upper voltage limit (1.5V vs 1.26V) is larger than 125mV.

Should this difference be understood as exactly 125mV or at least 125mV? If it is exactly, what is the tolerance and how to deal with upper voltage level mismatch?

Thanks,
kladu

Screenshot 2022-01-06 at Thu, 6 Jan, 12.47.23 PM.png

 

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igorpadykov
NXP Employee
NXP Employee

Hi Borut 

 

>Should this difference be understood as exactly 125mV or at least 125mV?

 

yes it should be at least 125mV, sorry for confusion.

 

Best regards
igor

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kladu
Contributor II

That's what I thought, thanks Igor.

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igorpadykov
NXP Employee
NXP Employee

Hi Borut 

 

>Should this difference be understood as exactly 125mV or at least 125mV?

 

yes it should be at least 125mV, sorry for confusion.

 

Best regards
igor