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Hi Expert,
as I know, usually in customer board PCB design, we will ask customer use the remote sense in some power rail for more accurate feedback. but in our EVM schematic, I find we only ask customer Route as Pseudo differential pair trace. so in AM62A customer can don't use the remote sense? need you double confirm.
...
BR,
Biao
Hello Biao,
Thank you for the query.
Can you please elaborate your query. Is this a query related to the PMIC where you are doing remote sensing.
If yes, please share the part number and also refer to the PMIC data sheet and checklist.
Regards,
Sreenivasa
Hi Sreenivasa,
I am asking for the TPS6593 for AM62A, there is any additional requirement for customer's PCB layout in TPS6593 FB pin?
BR,
Biao
Hello Biao,
Thank you.
Please refer to the guideline in the data sheet.
I am not sure if there is a schematics and layout checklist in works for the PMIC.
https://www.ti.com/lit/ds/symlink/tps6593-q1.pdf
11 Layout
11.1 Layout Guidelines
4.If the processor load supports remote voltage sensing, connect the feedback pins FB_Bx of the device to the respective sense pins on the processor. If the processor does not support remote voltage sensing, then connect the FB_Bx pin to a representative load capacitor. With differential feedback, also connect the negative feedback pin to the negative terminal of the same load capacitor. The minimum recommended trace width is 6 mils. The sense lines are susceptible to noise. They must be kept away from noisy signals such as PGND, PVIN_Bx, and SW_Bx, as well as high bandwidth signals such as the I2C. Avoid capacitive and inductive coupling by keeping the sense lines short, direct, and close to each other. Run the lines in a quiet layer. Isolate them from noisy signals by a voltage or ground plane if possible. Running the signal as a differential pair is recommended. If series resistors are used for load current measurement, place them after connection of the voltage feedback
Regards,
Sreenivasa