A series resonant Dc-DC converter powers an audio amplifier as a load. The
series resonant DC-DC converter may include a power input stage, a
switching stage, a series resonant stage, a transformer stage and a power
output stage. The series resonant DC-DC converter further may include a
clamping stage and a leakage inductance canceling stage. The clamping
stage may operate to clamp an excess voltage generated at least by a
leakage inductance and a parasitic capacitance. The leakage inductance
canceling stage may operate to generate a voltage drop corresponding to a
voltage drop generated by the leakage inductance. The generated voltage
drop may be subject to clamping. The clamping stage may operate under all
load conditions without any influence of the leakage inductance. As a
result, the series resonant converter may achieve improved load
regulation.