The electrothermal macromodel of voltage mode PWM controllers for SPICE

In the paper the problem of modelling PWM voltage mode controllers for SPICE is considered. SPICE library isothermal macromodel and a new form of the authors' electrothermal (including selfheating) macromodel of SG3525A controller are presented and compared. To illustrate the correctness and usefulness of these macromodels, some results of measurements and calculations of SG3525A controller operating in the catalogue test circuit and in the real BOOST converter are given as well.