System and method for zero voltage switching in continuous conductance mode (CCM) flyback converters

It is possible to achieve zero-voltage switching in continuous conductance mode (CCM) flyback converters by reducing the voltage differential across the primary winding immediately prior to transitioning the primary circuit from the off-state to the on-state. In one example, the voltage differential is reduced to the extent that polarity across the primary winding is reversed. In another example, the voltage differential across the primary winding is reduced significantly, but not to the extent that the polarity is reversed. Reducing the voltage differential across the primary winding may reduce a voltage potential across a current path of a switching transistor (e.g., a source-drain in a FET transistor) used to transition the primary circuit from the off-state to the on-state, which may decrease the parasitic power loss when the switching transistor is activated (closed).