On solar farms, central inverters convert direct current from PV panels to alternating current for transmission lines. A block diagram shows components Littelfuse can supply for these units. We make inline fuses, UL-rated power fuses, and surge protective devices to protect input and output circuits. We also offer MOSFET and SiC diode dc–dc converters, IGBT inverters, and dc disconnect switches.

Microinverters install on PV panels to convert direct current to alternating current for transmission lines. This block diagram highlights components Littelfuse makes for microinverters. Available products include MOSFET buck-boost dc–dc converters, SiC Schottky diode rectifiers, IGBT inverters, and TVS diodes to stop reverse polarity. We also offer many circuit protection solutions.

At industrial sites using solar power, multistring inverters connect several string inverters to a central inverter. As this block diagram shows, Littelfuse provides end-to-end electronic solutions for multistring inverters. We make MOSFET dc–dc converters, IGBT inverters, and Schottky diode rectifiers. We also offer specialty power fuses and surge protective devices for circuit protection.

Power optimizers match the voltage of current generated by PV panels to the ratings of solar inverters. A block diagram shows Littelfuse components that help power optimizers do this. We make MOSFET buck-boost dc–dc converters and NTC thermistors to prevent overheating. We also supply TVS diodes to stop reverse polarity and multilayer varistors to provide ESD protection to wireless interfaces.

String inverters connect multiple PV panels to a single solar inverter. Consult this block diagram to find Littelfuse components that help these units operate safely and efficiently. Our solutions include MOSFET dc–dc converters that perform maximum power point tracking (MMPT) to avoid overload inverter circuits. We also supply many types of overcurrent, overvoltage, lightning, and ESD protection.