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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