Mity CPU Platforms » MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P

11/06/2025

MW 06:44 PM PCB Development: RE: SOM_62P Reset on LED_RTN

Wondering if you could add a LPF filter (cap + R) across your FET to make the switch less aggressive. Kind of hacky, but it might work.
Michael Williamson

AD 06:28 PM PCB Development: RE: SOM_62P Reset on LED_RTN

That explanations seems probable, if I have any free time coming up I'll play around with the circuit on our side to get it working reliably.
For the time being we'll continue to not switch LED_RTN.
Thanks for the rapid reply! Adrian De Vico

MW 06:15 PM PCB Development: RE: SOM_62P Reset on LED_RTN

Hi Adrian,
Haven't seen this before.
This is a snippet from the SOM schematic related to the Power Good LED and the LED_RTN Net:
!SOM_LED_PGOOD.png!
As you can see, the PMIC_PGOOD is AND-ed into the main MCU_PORz. It is an... Michael Williamson

AD 05:45 PM PCB Development: SOM_62P Reset on LED_RTN

We have a series of switchable LEDs on board for basic debugging of various on-board supplies, and for completeness I've included the ability to sink current from LED_RTN (pin 2 on SOM) to get some visual output from the SOM.
In terms... Adrian De Vico