An isolated boost converter includes first and second switches that are switched
simultaneously, a transformer and an energy storage capacitor on the primary side
of the transformer for storing energy received from input power source. In one
embodiment, when the first and second switches are closed, the energy in the capacitor
is transferred to the output load while a boost inductor is charged, and when the
first and second switches are open, the boost inductor provides energy from the
input voltage source to supply the load and to charge the capacitor, In one embodiment,
a third switch is provided to relieve the voltage stress on the secondary side.