I am a bit new to designing circuits so bare with me please. I'm trying to improve on one of my older projects I made to assist in my daily work. Currently my original version works great stand alone but its lacking a few features that would be nice.
I will be adding a usb connector and ftdi ic to access the mcu's UART instead of icsp header I use currently. I also want to try and add a dc/dc step up from the usb to about 12v to supply the units I'm working on. Is this feasible? Typically 12V 1A is needed. I was thinking of the LM2623. I have just started on the schematics so all I have on the power side so far is below but this got me thinking I better start learning about protection since I will be attempting to add different power sources before I continue.
My guess would be to add some protection diodes between vbus coming in from usb and on 14vdc coming in from j1 and maybe on a2 and b2 on sw so b2 doesnt feed back through a2 when jacks not being used? Any advice?
I will be adding a usb connector and ftdi ic to access the mcu's UART instead of icsp header I use currently. I also want to try and add a dc/dc step up from the usb to about 12v to supply the units I'm working on. Is this feasible? Typically 12V 1A is needed. I was thinking of the LM2623. I have just started on the schematics so all I have on the power side so far is below but this got me thinking I better start learning about protection since I will be attempting to add different power sources before I continue.
My guess would be to add some protection diodes between vbus coming in from usb and on 14vdc coming in from j1 and maybe on a2 and b2 on sw so b2 doesnt feed back through a2 when jacks not being used? Any advice?
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