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Fairchild adds analysis tools to Power Supply WebDesigner

27 Sep 2013

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Fairchild Semiconductor has improved its Power Supply WebDesigner (PSW), an online design and simulation system, by adding powertrain discrete (MOSFET/IGBT/Rectifier) device power loss and efficiency analysis tools. The modules allow for the integration of power discrete semiconductors, transformers and inductor design values.

Intended for 100 W to 3 kW designs as a function of input and output conditions, these new modules provide designers power factor correction (PFC), phase-shifted full-bridge plus secondary side synchronous rectification (PSFB+SR) power train discrete device analysis, and the matrix of device combinations associated with these topologies.

From user-specified electrical and mechanical specifications, the new modules provide improved combination of power discrete semiconductors, transformer and inductor design value. It also provides a dashboard view of the converter's system and device power loss, device junction temperature, and further component fine-tuning over the operating conditions.

As with other PSW modules, designers using the tools can accept default recommended values, or spend time optimising the important details to their unique design needs. They can get quick, accurate estimates on design performance, and refine design choices as they go. The tools also allow them to spend the time to perform detailed simulation analysis and learn the insights of how their design and its hardware prototype will work with higher degree of confidence.

The Power Train Discrete Module consists of a phase-shifted full bridge with secondary side synchronous rectification (PSFB+SR) module and power factor correction (PFC) module.

These new modules save designer's time when evaluating various combinations. Rather than spending the typical one-week-per-combination bench testing time, PSW can simulate each combination quickly and accurately, typically about two per cent difference over line and load conditions between tool and hardware measurement results.




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