About inrush current of internal regulator in i.MX6DQ.

[keitanagashima]

Hi All,

When ON the LDO (LDO_ARM, LDO_SOC, etc) in i.MX6DQ, the inrush current flows because the rising-up of LDO is precipitous.

So, we'd like to decrease the inrush current.

Could you tell me the way of loosen the steep LDO output in i.MX6DQ?

Best Regards,

Keita

[igorpadykov · Accepted solution]

Hi Keita

at power-up time (when processor is not fully powered yet) there is

no method to set the slope of LDO output  inside i.MX6DQ.

After powering processor, PMU_MISC2n REGx_STEP_TIME bits define ldo timings,

that is when LDO changes one voltage to other, voltage changes with

steps defined in REGx_STEP_TIME .

During processor power - up (that is meaning of LDO "inrush current") - REGx_STEP_TIME

is not used.

Unfortunately there is

Best regards

igor

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