Hi Alex, Thanks for the comments!
Circuit includes a comment that heat will be an issue at higher loads. Components will go 12 V or more at 3 A with small value changes to adjust turn on ramp, but highest I imagine for this implementation will be 12V at 1A which was my design point. Looking at 6 mW in the immediate application (5V, 200 mA), 80 mW for the 12V, 1A case. Traces are adequate at 0.020" with a short neck down to 0.015 through the 0805 parts. Note also low Rds(on) of 150 milliohm for this MOSFET at a worst corner case. Layout is ExpressPCB as I have several existing small utility boards already in ExpressPCB. I'll probably make a few more of the other small cards when I do this one so leaving the board in ExpressPCB. I'll toss in a few heat spreading via, but not going to do much in this case. I frequently end up with additional layers and multiple via when building designs that operate at higher dissipation - just not the case here! B -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/a47625f0-3dd4-4f88-925a-41901ddacf6d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
