Interactive Simulation and Verification SIMULINK Models for DC-DC Switching Converter Circuits using PWM Control ICs

The extensive use of dc-dc hard and resonant switching converter circuits in electronic systems makes the fundamental understanding of switching converter circuits a necessity for students and electronic engineers. Because the design philosophy of the switching converter circuits includes many areas of knowledge, e.g., the converter circuits and electronics, linear and nonlinear control system theory, and magnetics, the application of user-friendly and powerful computer-aided simulation software tools to help students get acquainted with the dynamic behavior of the dc-dc hard and resonant switching converter circuits is inevitable. Although previous result [1-2] have already discussed the use of SIMULINK behavior models for simulation of dc-dc hard and resonant switching converter circuits, none of them deals with those practical implementation issues when the switching converter circuits are constructed by using commercially available or research oriented pulse-width-modulation (PWM) control ICs. It is therefore the purpose of this paper to bridge the gap between the SIMULINK behavior models and the experimental dc-dc switching converter circuits using both commercially available and research oriented PWM control ICs. With the help of these behavior models, students and electronic engineers can learn not only theoretical circuit operations, but also practical implementation issues and the corresponding theoretical explanations. 2. Simulation and verification results via SIMULINK behavior models and experimental circuits An Example: Consider the boost-type switching converter circuit using PW