Technical advantages of ON Semiconductor's new ElitePower simulation tool and PLECS model self-service generation tool
【Lansheng Technology Information】ON Semiconductor recently released the Elite Power simulation tool and the PLECS model self-service generation tool (SSPMG). The Elite Power simulation tool is paired with PLECS to provide customers with a convenient online environment. Elite Power simulation tools bring several new features and advantages over the current state of the art. SSPMG is a breakthrough tool that increases the flexibility and accuracy of models used in PLECS simulations.
The PLECS model contains loss look-up tables (based on manufacturer data sheets) and thermal chains in the form of Cauer or Foster equivalent networks. During simulation, PLECS uses loss tables to interpolate and/or extrapolate to obtain bias point conduction and switching losses for circuit operation.
The most common method for measuring switching losses is the double pulse tester. ON Semiconductor's advanced dual-pulse testers are valuable for measuring lowest (or device) losses with negligible effect on parasitic elements, allowing comparisons across die sizes, RDS(ON) values and packages. However, data sheet loss values will not reflect the observed losses when customers evaluate losses in their actual applications. After further analysis, it became clear that the datasheet based PLECS model was not representative of the end user's application. Customers had to make a trade-off between cost and performance, so the inductors and capacitors chosen were not as ideal as those found in ON Semiconductor's double-pulse tester. Only if the user's application has the same parasitic environment as the manufacturer's datasheet double-pulse test environment, the simulation can be performed using the standard manufacturer-supplied PLECS model.
A better way to evaluate the customer's actual losses is to introduce the customer's real board and component (such as inductors and capacitors) parasitic elements into the dual pulse tester setup and adapt it to the specific customer application. Since this can be a very difficult measurement task, ON Semiconductor has launched SSPMG for this purpose, enabling customers to design PLECS models according to their application environment in a virtual prototyping environment. While all simulation-based virtual environments are only as good as the underlying model, ON Semiconductor's highly accurate physics-based models are the SSPMG engine customers can rely on to achieve high-fidelity PLECS models.
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