A problem not often considered with mobile device chargers and other appliances that use electrical outlets is reducing the quiescent power loss due to solid-state device leakage when the appliance is not in use. Could micro-electromechanical (MEM) relays be used to aid in eliminating this vampire power because of their extremely high off-resistance? Initial work on the use of a single four-terminal MEM relay in conventional buck and boost converters will be presented. This talk will include an overview of electrostatically actuated MEM relay operation, characterization, including typical challenges encountered during probe station testing, and failure mechanisms. In addition, analytical solutions that account for non-idealities, simulated, and measured results will be presented for buck and boost DC-DC converters in both discontinuous conduction mode (DCM) and continuous condition mode (CCM).