Hello!
Please help us clarify the following questions
1. Witch pin the return path of GATE_LS?(AGND or DGND)
2. GND of S32K144 is no distinction between digital and analog (No DGND,AGND, Only Vss), How do you recommend grounding while we use FS4503 & S32K144?
Thank you!!
Solved! Go to Solution.
Hi,
[A1] Return path of GATE_LS is AGND. But at the end you can connect all the ground together as in the schematic in the following link: https://www.nxp.com/downloads/en/schematics/FRDMFS4503CAEVM-A-SCH.pdf
[A2] S32K144 have VSS (Ground) and VSSA (Analog Ground), but both must be shorted to a general GND at package level.
Have a great day,
Jose
-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!
- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------
Hi,
[A1] Return path of GATE_LS is AGND. But at the end you can connect all the ground together as in the schematic in the following link: https://www.nxp.com/downloads/en/schematics/FRDMFS4503CAEVM-A-SCH.pdf
[A2] S32K144 have VSS (Ground) and VSSA (Analog Ground), but both must be shorted to a general GND at package level.
Have a great day,
Jose
-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!
- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------
Thank you for your information!
So, that's mean the return path of 12V battery (VSUP1/2) is also AGND?
I will connect AGND & DGND together, but I'm thinking about where to place common point on the PCB layout.
Hi Wade,
Correct, the return path of 12V battery (VSUP1/2) is also AGND.
Connecting the AGND & DGND together can be done by placing an inductor (around 1uH or less) between them.
Regards,
Jose