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i.MX6Q: VDDHIGH_IN and VDD_SNVS_IN current compensation

Question asked by Nori Shinozaki on Oct 19, 2015
Latest reply on Oct 21, 2015 by Nori Shinozaki

Hello Champs,

 

In order to cope with higher current requirement for VDDHIGH_IN and VDD_SNVS_IN,

my customer is trying to use the i.MX6Q SabreSD schematics' option.

 

"Optional LDO" for VDD_SNVS_IN, and FP0100F0 SW4(3.15V) for VDDHIGH_IN.

 

Now we are wondering what this D10 NSR0320 is for.

 

#1

In the original design VDDHIGH_IN(VGEN5) is 2.8V and VDD_SNVS_IN is 3.0V.

Now they are trying to use 3.15V for VDDHIGH_IN, which is bigger than VDD_SNVS_IN 3.0V.

What should the D10 be handled in this new design?

 

#2

In the Reference Manual, there is no power up sequence for VDDHIGH_IN.

Is the startup order 6 of SW4 OK for VDDHIGH_IN?

Because the original VDDHIGH_IN order VGEN5_SEQ is 12.

 

Best regards,

Nori Shinozaki

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