i.MX RT Crossover MCUsのトピックRe: Layout file_EVKB_B1 Problem

Layout file_EVKB_B1 Problem

EthanKu — Mon, 05 Sep 2022 04:00:25 GMT

i am designing the RT1062 layout and then checking the EVKB layout file(MIMXRT1060-EVKB-DESIGN-FILES_B1).

i found EVKB layout of DCDC(DCDC_LP_1 and DCDC_LP_2) is not identical to AN13202(EMC Design Recommendation on i.MXRT Series) that removing copper under the inductor. i would like to know which layers under the inductor are recommended to be removed

my question is

is there a layout file only for RT1062?

EVBK layout as

EthanKu_0-1662349940655.png

AN13202 layout as

EthanKu_1-1662350064184.png

thanks

Re: Layout file_EVKB_B1 Problem

Hui_Ma — Tue, 06 Sep 2022 02:16:33 GMT

Hi,

I checked with RT hardware design team, both layout design should be ok.

Why AN13202 mentioned board (we called EMC board) keep the GND be empty, which just caused for L7 inductor soldering. There with no special request for that layout design.

The RT1060EVKB board is 4 layer PCB design and with one GND layer. That design is also acceptable.

Due to the EMC design consideration, customer should keep DCDC circuit loop be shorter.

Thanks for the attention.

Mike