Minor Loop Position and Area Measurement of Inductors for DC-DC converter Considering Excitation Process

Power conversion circuits based on switching operations are used in automobiles and home appliances to achieve higher efficiency and its miniaturization. Power conversion circuits require the use of inductors, which are characterized by the fact that DC current is superimposed on them. In this circuit, evaluating losses while assuming the actual operating environment has become an issue in the design of inductors. This paper proposes a measurement procedures of minor loop due to differences in the excitation process of inductors used in actual power conversion circuits.