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CC2745R10-Q1: Power consumption differs very big between power supply mode (LDO vs DCDC).

Island Wei
Intellectual 900 points
Part Number: CC2745R10-Q1

Tool/software:

Hi team,

I test a ADV+SCAN case with DCDC and LDO mode separately, use ET to estimate. I find the current when using LDO is about twice the current when using DCDC.

Is that correct for such a big difference?

DCDC

LDO

And I have the same result when mearsure the standby current.

DCDC

LDO

  • +1
    TI__Intellectual 2500 points

    Island,

    If you look at section 7.9 and 7.10 of the CC2745R10-Q1 data sheet, you can see the current consumption differences between using the DCDC and the GLDO. Current consumption in the various modes are higher when using the GLDO and based on these tables it does seem reasonable to see the difference you're measuring.