Renewable energy grade ICs reduce photovoltaic system cost

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National Semiconductor has introduced 10 new SolarMagic ICs, the first in a series developed to reduce cost, improve reliability and simplify design of photovoltaic systems.

Ranging from the industry's first full bridge gate driver to a micropower voltage regulator, the new ICs are designed for photovoltaic electronic applications, including those found in microinverters, power optimisers, charge controllers and panel safety systems. "National now offers an extensive portfolio of analogue and mixed signal ICs that provide manufacturers of microinverters with the robust, renewable energy grade devices they need to ensure long term operation," said Bill Mazotti, Solar IC business unit director at National. "National's solutions for the photovoltaic space now include components for power optimisers, microinverters and inverters." According to Mazotti, the devices are the first developed to meet photovoltaic renewable energy grade qualification requirements. Each IC is engineered specifically for demanding rooftop environments that range from extreme cold to severe heat and each passes rigorous testing with enhanced reliability specific to solar requirements. In addition, the ICs are optimised to ensure long term operation and developed to meet and exceed the 25 year life expectancy of photovoltaic modules. The company claims the SolarMagic ICs increase energy harvest, reduce cost per kilowatt hour and improve safety in junction boxes and other types of enclosures. Used independently, the ICs are also said to provide high voltage and high current gate drive.