BBxm DVI_+5V current limit


I have a BBxm rev C1 powered from the +5V jack. I am using an unpowered dvi to vga adapter (based on LT8511A), so it takes its power from the DVI_+5V in the hdmi connector. When the board starts booting, the current needs of the LT8511A are less than 100mA, so everything works fine, but when plymounth loads, the LT8511A has a inrush current that exceeds the 100mA limit, so the PTC RXEF010 triggers, cutting the DVI_+5V power and shutting down the adapter.

My question is: if I shortcircuit the PTC, what could be the current limit for the DVI_+5V pin? Could this interfere with other components of the BBxm?

Thanks in advance for your help

best regards,

You remove it, the current limit will be all the power your DC supply can deliver. Worst case, you burn up some etch on the board.


Hi Gerald,

Thanks a lot for the fast response. I was unsure about it.