National Semiconductor recently introduced the in-panel SolarMagic chipset, an analog-intensive power management chipset that aims to improve power output, reliability and cost-effectiveness of solar systems. The solution can recoup up to 71% of power lost to mismatch – regardless of cell technology – giving installation owners more predictable power output. Proprietary algorithms apply localised maximum power point tracking (MPPT), extracting the maximum energy available by translating the input voltage and current to the best output voltage and current pair to maximise energy flow. The SM3320 senses input voltage and current throughout the array and adjusts to achieve optimum string levels. The chipset includes a 99,5% efficient, 350 Watt tri-mode power converter. It can either boost, pass-through or lower the voltage of each panel. Options include fire safety panel shut-off and a set of sophisticated safety mechanisms.
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