![]() The PXI platform is a good environment in which to demonstrate design methods for digital power architectures. Using an intuitive graphical system design process in National Instruments (NI) LabVIEW software can greatly improve a lone analog engineer's ability to implement the digital control necessary in these environments. ![]() However, implementing these technologies without the combined efforts of digital, analog and software engineers can be daunting. The reason is obvious: A volume measuring 2 cm × 13 cm × 22 cm can hardly support the transformers and heatsinks typically required in a system power supply.ĭesigning for PXI modules and other tightly constrained environments has been helped by two recent trends: higher-performance switch-mode power supplies and the use of digital control to regulate them. ![]() The PCI eXtensions for Instrumentation (PXI) platform is a good example of a size requirement (3U Euro-card) that has already managed to accommodate digital multimeters, oscilloscopes and many other instruments, but has struggled to meet the traditional requirements of programmable power supplies. ![]() As the demand for higher-power and higher-precision instrumentation grows, the size requirements for these devices continue to shrink and the design complexity increases. ![]()
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