State-plane trajectories used to observe and control the behavior of a voltage step-up DC-DC converter

State-plane analysis techniques are employed to study the voltage step-up energy-storage dc-to-dc converter. Within this framework, an example converter operating under the influence of a constant on-time and a constant frequency controller is examined. Qualitative insight gained through this approach is used to develop a conceptual free-running control law for the voltage step-up converter which can achieve steady-state operation in one on/off cycle of control. Digital computer simulation data is presented to illustrate and verify the theoretical discussions presented.