Zero voltage switching, series resonant half-bridge VHF inverter

摘要

A DC to AC inverter is provided that includes a first capacitor (11) and a first inductor (13) connected in series between a positive supply voltage node (101) and a central node (103); a first active switch (15) connected across the first capacitor (11) and driven with a first periodic drive signal (DR1) of a predetermined frequency; a second capacitor (21) and a second inductor (23) connected in series between a negative supply voltage node (102) and the central node (103); a second active switch (25) connected across the second capacitor (21) and being driven with a second periodic signal (DR2) of said predetermined frequency and being out of phase by 180 degrees relative to the first periodic drive signal (DR1); a bandpass filter (31, 33) connected between the central node (103) and an output node (104); and a load (47) connected between the output node (104) and ground. IMAGE