Power conversion is being used in many everyday appliance products, including microwave ovens, washing machines, air conditioners and refrigerators. With many more sophisticated applications arising in conjunction with energy saving and cost reduction, more advanced control technologies like field-orientated control or load-adaptive control for motors have been developed. Performance for these advanced controls are generally unattainable via standard 8-bit microcontrollers due to lack of either signal-processing capabilities or suitable peripherals. Recently, however, this situation has changed dramatically through utilization of DSP-based controllers. The architecture of a Digital Signal Controller (DSC), which includes both digital signal processor (DSP) and microcontroller (MCU) functions with sophisticated on-chip peripherals, was designed to reduce component usage and system cost as well as advance processing power.