Analog macromodel of the SG1525A PWM for use with SPICE2G.6 simulators

摘要

An analog macromodel for the SG1525A PWM (pulse width modulator) that is compatible with SPICE2G.6 and PSPICE analog simulators has been developed. It exhibits no convergence problems, simulates realistic line and load responses, frequency response, output voltage levels, and has time domain capability. Model development and a comparison of macromodel performance with actual measurements will be discussed.