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Home >> Documentation >> Articles >> Modeling considerations
Simulating the switching behavior of a Switch Mode Power Supply (SMPS) is not always an easy task. This is especially true if the designer wants to use an exact SPICE model for the Pulse Width Modulator (PWM) controller which will be used in the design. The PWM model may exist, but its syntax may be incompatible with your simulator. If the model has not been created, the debate over whether or not to do the simulation is closed! The solution that is proposed in this article consists of writing your own generic model of the PWM controller and then adapting its intrinsic parameters to comply with the real one you are using. Fixed frequency Current Mode Control (CMC) and Voltage Mode Control (VMC) models will be thoroughly covered in this article, as well as the model translation between different simulators.
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