Example: Startup, Shutdown and Fault Condition Performance
Transient analyses are the bread and butter simulations of a SIMPLIS prototype. A number of the tests that we want to run on a virtual prototype require the simulation of many hundred DC-DC conversion cycles. While it is theoretically possible to conduct such analyses with some of the other simulation engines available, the speed of SIMPLIS transient simulations makes testing these performance features very practical.
The need for speed:
The virtual prototyping process requires fast simulation times. For each final test result of a virtual prototype, there are typically 10 to 20 preparatory simulation runs required to get the circuit design and the simulation model "in shape" to where they represent the virtual prototype that the designer wants to test.
Simulation speed is not the only issue. All the time spent trying to get a simulation model to "converge" is wasted time. For switching power supplies, this is one of the qualitative differences between SIMPLIS and Spice. With SIMPLIS, "convergence" ceases to be the dominant thought when trying to model these complex switching systems.
Because most SIMPLIS simulations are measured in seconds rather than minutes and the convergence issues are drastically reduced, the time consumed waiting for results in the early design process is significantly minimized. Instead, the designer is focused, not on what is "wrong with my simulation" but rather what is "wrong with my design".
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