This is a copy of https://code.google.com/p/daecu/source/browse/#svn%2FHardware%2Ftrunk%2FKICAD_Project_PWR_buck_12V_switcher with lib split up per standard rusEFI file practices.
R0.1 first spin
R0.3 adjusted to be easier to MFG with an iron.
R0.4 Added MOSFET that allows 150V surge protection
R0.5 Corrected Q2 MOSFET pins.
