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AM62X-PET-CALC: PMIC phase node layout query and Crystal layout query

Jingcheng ye
Intellectual 560 points
Part Number: AM62X-PET-CALC


Hi TI 

For the crystal layout , any guide slide can be share? Any comments to below layout design in My project?

For the PMIC switch phase node layout , any layout guide for buck inductor , whether need remove the plane under inductor?

 

BR Jingcheng

  • +1
    TI__Guru 63385 points

    I can only comment on the crystal circuit implementation.

    What is the component located between the two load capacitors and connected between the XI and XO signals? There should not be any components other than the crystal connected between XI and XO.  Any coupling between XI and XO signal traces should be minimized, so you should separate the traces where they are routed close together.  What is on the adjacent layer of the PCB. There should be a continuous (unbroken) ground plane area under the entire crystal circuit to avoid any coupling from other signals.

  • 0 in reply to peaves
    TI__Guru**** 200944 points

    Hello Jingcheng

    For the PMIC query below, please start a new thread adding the PMIC number and layout for the PMIC team to support.

    For the PMIC switch phase node layout, any layout guide for buck inductor , whether need remove the plane under inductor?

    Regards,

    Sreenivasa