In this applet the dynamic performance of the boost converter operating in continuous conduction mode is examined. A control system regulates the output voltage to a constant value by adjusting the duty cycle. The boost converter in continuous conduction mode has a control issue/characteristic. That is it has a zero in the right hand half plane (RHP). The effect of this RHP zero is observed as an initial drop in the output voltage when the duty cycle is increased. Shortly after the output voltage then begins to rise. This RHP zero is seen in the root locus plot and is position is dependent on the duty cycle and boost inductance. The response of the system is also dependent on the values of the LC filter, in which small values results in a faster transient time.

• Observe the initial output voltage drop caused by the RHP zero.
• Adjust the circuit parameters and observe the change in the transient performance and the root locus plot.