[FAQ] AM625 / AM623 / AM620-Q1 / AM625-Q1 / AM625SIP Custom board hardware design – Ferrite (power supply filter) recommendations for SoC supply rails

Hi Board designers, 

Refer below inputs for Ferrite (power supply filter) recommendations 

1. Do you have recommendations on using ferrite (power supply filters) for the SoC supply rails

Refer SK-AM62B-P1 starter kit (SK) evaluation module schematics for ferrite recommendation.

https://www.ti.com/tool/SK-AM62B-P1

2. Do you have some recommendations to optimize the number of ferrites used

Based on requests from multiple customer, we update the ferrite recommendations.

Refer SK-AM62-LP AM62x starter kit (SK) evaluation module schematics for ferrite recommendation.

https://www.ti.com/tool/SK-AM62-LP

3. I do not want to use any ferrites in my design. Do you have some recommendations

We are reviewing the request. The recommendation is to generate a common filtered supply using L and C and connecting to all the analog supplies.

4. Are these recommendations valid for other Sitara processor 

The recommendations are valid for the following devices.

AM644x, AM642x, AM641x, AM243x, AM625SIP, AM625-Q1, AM620-Q1, AM62A7, AM62A7-Q1, AM62A3, AM62A3-Q1, AM62P, AM62P-Q1

Note: 
Refer below documents during board design.

Custom Board design:

Hardware Design Considerations

Hardware Design Considerations for Custom Board Using AM625, AM623, AM625SIP, AM625-Q1, AM620-Q1 Family of Processors

https://www.ti.com/lit/pdf/sprad05

Schematic Design and Review Checklist

AM62x Processor Family (Recommended)

AM623, AM625, AM625SIP, AM620-Q1, AM625-Q1 Processor Family Schematic Design Guidelines and Schematic Review Checklist

https://www.ti.com/lit/pdf/sprado3

AM62X processor families (For references) 

AM62x, AM62Ax, AM62D-Q1 and AM62Px Processor Families Schematic, Design Guidelines and Review Checklist

https://www.ti.com/lit/pdf/sprad21

Regards,

Sreenivasa