Switch conductance regulation is used in favor over dynamic off-time modulation in resonant SC DC-DC converters due to its smaller output voltage ripple and operation at a constant frequency. However, at light load the resonant oscillations are significantly damped because of the increased Rdson of the power switches. A modeling approach is presented and experimentally verified showing that under these conditions it is beneficial to scale both Rdson and fswitch to further reduce switching losses while still maintaining a reasonably small output voltage ripple.