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Power Optimizers

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.

Block Diagram

Technology:
Product Series:
Features:	Ultra-low on-resistance RDS; high current handling capability; fast body diode
Benefits:	High power density; easy to mount;space saving

Technology:
Product Series:
Features:	Tight tolerance; small form factor;fast thermal response
Benefits:	Dual outputs provide space-efficient design; high immunity to latch-up; rise/fall times <10 ns

Technology:
Product Series:	SP3130, MLA, MHS
Features:	Low capacitance of 1.0 pF per I/O
Benefits:	Smaller form-factor and multi-line protection enables ease of design

Technology:
Product Series:	SP712, SP2555NUTG, SM712
Features:	Low capacitance of 2.5 pF; low leakage current of 0.1A ; small form factor
Benefits:	Minimizes signal distortion, reduces voltage overshoot, and simplified PCB design

Product Categories

TVS Diode Arrays

TVS diode arrays protect electronics from damage due to transient voltage surges and electrostatic discharges (ESDs). Littelfuse offers a variety of these surge protective devices (SPDs) in SOIC, DIP, flipchip, and other designs. Our lightning SPDs direct massive voltage surges from lightning strikes on outdoor equipment to ground. Our ultra-low capacitance TVS diodes provide ESD protection to data ports and cables. We also make SPDs specifically for automotive applications. Find your solution in our Circuit Protection Products Selection Guide.

Gate Drivers

Littelfuse offers advanced gate driver ICs designed to optimize the switching performance of IGBTs, MOSFETs, and SiC-MOSFETs in power electronics. Our gate driver solutions include IGBT drivers and optically isolated gate drivers engineered for fast turnoff and high-efficiency control. Ideal for use in inverters, rectifiers, and other solid-state applications, our gate drivers ensure precise, reliable operation across demanding conditions.

MOSFETs (Si/SiC)

Littelfuse offers a comprehensive range of silicon and silicon carbide MOSFETs engineered for high-efficiency current conversion, switching, and power factor correction (PFC). Our portfolio includes discrete power MOSFETs and MOSFET modules suited for rectifiers, inverters, and PFC circuits. With a wide selection of MOSFET packages and configurations, we provide both off-the-shelf and custom-designed solutions to meet the unique needs of industrial and commercial power systems.

NTC - Discrete Sensors

Littelfuse offers a variety of discrete negative temperature coefficient (NTC) sensors and thermistors for temperature sensing, temperature measuring, and process control applications. Our NTC sensor and thermistor portfolio includes bare chip, epoxy-coated, glass-coated chip, and surface mount devices. All boast high accuracy, long-term reliability, stability, and predictable performance in challenging environments.

TVS Diodes

Transient voltage suppressor (TVS) diodes defend against damage from overvoltage events by responding within picoseconds to shunt current to ground. The classic example of TVS diode use is protecting outdoor telecom equipment from lightning strikes. Littelfuse produces surface mount and leaded diodes and TVS diode arrays for that, as well as TVS diodes for cars, personal electronics, data cables, and household appliances. Consult our Circuit Protection Selection Guide to guide your search for a solution.