DC Correct Operation in MOBILE Inverters

The verification of an appropriate DC behavior is essential before analyzing other aspects of the operation of a circuit. This paper analyses the case of MOBILE inverters and determines the relations that circuit representative parameters (such as the relation of the ratio of gate width to the gate length of the HFET, and the area factors in the RTDs) must verify to obtain a MOBILE inverter which operates correctly. The difficulty of an analytical study has been overcome by resorting to series expansions for both the RTD and the HFET I-V characteristics in the points of interest, so obtaining simplified descriptions for describing these behaviors.