On the TK1, there was a cap that could be removed to get the board to boot as soon as it was plugged in. Is there anything similar for the TX1? We’re using the supplied carrier board, if that’s helpful.
On our mobile platform, we occasionally get voltage dips. To fight this, we’ve built a simple circuit with a large supercap. It uses a schottky diode to isolate the supercap when the power is good (and charges it through a high wattage resistor) and then when power drops, it should switch to the cap to hold the voltage up. Most everything works, but the problem we’re seeing is if we unplug the power supply and run strictly off the supercap, the TX1 board powers off. We’ve tried some decoupling caps across the TX1 power input and they haven’t helped. We’ve tried to scope the power in to look for transients and there aren’t any that we can see. Any ideas on what might be happening?