I want to rectify 120V (mains North America) at a relatively high amount of current (5 amps), so naturally my first idea is to just find a bridge rectifier. After finding one capable of the current and voltage, I realize that the power dissipated would be high enough to warrant a heat sink due to the large forward voltage of the diodes.
V(fwd) = 1.1v per diode 2 diodes are always in conduction so 2.2v drop 2.2 * 5 = 11 watts of heat dissipation
I started looking into alternatives but I did not seem to come up with much. So, back to the question, what solid state techniques exist to rectify high voltage AC that remain efficient even under high currents?