Hi all,
I am working on a project with two Teensys. In regular operation either or both of them will have power coming through their USB ports. If only one is powered, regardless of which one it is, the other needs to use the same power.
My current plan is to sever the jumper on the back of the boards, connect both Vins together, then use Vusb from each board through an selector/combiner. I could do this with a diode or, but I don't really want that voltage drop. I have found the TI TPS2115A (https://www.digikey.ca/en/products/detail/texas-instruments/TPS2115APWR/652785 ) which I believe would also work.
I'm curious if there's another solution using discrete MOSFETs that might be an option.
Thanks!
I am working on a project with two Teensys. In regular operation either or both of them will have power coming through their USB ports. If only one is powered, regardless of which one it is, the other needs to use the same power.
My current plan is to sever the jumper on the back of the boards, connect both Vins together, then use Vusb from each board through an selector/combiner. I could do this with a diode or, but I don't really want that voltage drop. I have found the TI TPS2115A (https://www.digikey.ca/en/products/detail/texas-instruments/TPS2115APWR/652785 ) which I believe would also work.
I'm curious if there's another solution using discrete MOSFETs that might be an option.
Thanks!