A system for controlling an electrosurgical generator using a full bridge topology is disclosed. The system includes a high voltage direct current power source (12) which supplies power and a radio frequency output stage (14) which receives power from the high voltage direct current power source and outputs radio frequency energy at a predetermined radio frequency set point. The system also includes one or more sensors (16) which determine one or more parameters of radio frequency energy being applied to tissue and a microprocessor (18) configured to receive one or more parameters and outputs the predetermined radio frequency set point to the radio frequency output stage as a function of one or more of the parameters of radio frequency energy.