2011

Photovoltaic ICs

altNational Semiconductor Corp. (Santa Clara, CA) has released ten SolarMagic™ integrated circuits (ICs) that meet photovoltaic renewable energy-grade qualification requirements. Each IC is engineered specifically for demanding rooftop environments that range from extreme cold to severe heat.

For distributed PV power optimization applications providing maximum power point tracking (MPPT), the SM72441 and SM72442 programmable MPPT controllers feature voltage and current diagnostics, integrated four-switch, buck-boost converter control, overvoltage/overcurrent protection, and an I2C interface. The SM72295 full-bridge and SM72482 dual 5A compound gate drivers drive four discrete MOSFETs in a full-bridge configuration. Each includes a high side overcurrent sense amplifier with high sink and source current capabilities. For a variety of bias rail applications used in power optimizers, microinverters and charge controllers provide the SM72485 switching regulator with constanton- time technology that enables an operating range up to 100V at high conversion efficiency. National Semiconductor Corp. also offers the SM72238 5V low drop out (LDO) regulator for lower power.

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