snvs supply on imx6ul

[sadatanvashisth]

What is the minimum supply I can give to SNVS_IN through a LDO whose input is lithium ion battery which may go down to 3V during discharging. My VDD_HIGH_IN is 3V.

[Yuri]

Hello,

  According to i.MX 6UL Datasheet(s), VDD_SNVS_IN  should be in range  2.40 - 3.6 V

Note, the voltage difference between VDD_SNVS_IN and  VDD_HIGH_IN should not exceed

0.3 V. The i.MX 6UL is designed to allow current flow between these power domains proportional

to the voltage difference.

Have a great day,

Yuri

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[sadatanvashisth]

Thanks for the prompt reply Yuri.

We are currently using PMIC MC32PF3000A3EP (In default configuration)  for power management and connected 2.7V generated by LDO from Lithium ion battery to LICELL (Pin no.36). Will it meet the required voltage levels.

Regards,

Sadatan

[Yuri]

Hello,

   Your configuration may be used. 

Regards,

Yuri.

[sadatanvashisth]

Thanks for the Reply Yuri.

So this configuration will not going to result in damage of processor due to flow of any current between any two supplies like VDD_SNVS_IN and  VDD_HIGH_IN, right?

[Yuri]

 I think - yes. But, strictly speaking, it is needed to review the scheme :-) 

[sadatanvashisth]

Here we are using LICELL =2.7V which is being generated by LDO LDK130 , input of this LDO is 3.7V Li-ion battery which may go down to 2.8 to 3V.

[Yuri]

OK!

[sadatanvashisth]

So can you please review and let me know your inputs?

Regards,

Sadatan

[Yuri]

 I do not have additional comments regarding the scheme. 

~Yuri.

[sadatanvashisth]

Hi Yuri,

Thanks a lot for your support , my only purpose of sharing the scheme was to get your final comment as you suggested that you can confirm whether it will work or not after reviewing the scheme . So are you saying after reviewing the shared scheme that it is ok?

[Yuri]

Scheme looks quite reasonable. 

[sadatanvashisth]

Hi Yuri,

Thanks a lot for all the support.

Regards,

Sadatan