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iMX283 : VDDD is connected to DCDC_VDDD directly

Question asked by koichi sakagami on Apr 10, 2015
Latest reply on Apr 16, 2015 by Yuri Muhin

Dear community,

 

We are designing a custom board.

 

[Background]
We are referring the schematic of MX28EVK.
The DCDC_VDDD output  is directly inputted into VDDD0-6 .
We know that theDCDC_VDDD should not exceed 1.55V taking into account +3 %
tolerance (when DCDC_VDDD is used to power the VDDD).
We have to drop a DCDC_VDDD voltage for the VDDD margin.

 

[Question]
What is the recommended solution to drop the DCDC_VDDD voltage ?
Should we insert a resistance or a diode ?

 

Best Regards,
Koichi Sakagami

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