Littelfuse launches 1200V SiC diodes at PCIM

18th May 2017

Merged p-n Schottky structure enhances surge capability and reduces leakage current


Littelfuse has introduced the first GEN2 Series of 1200V SiC Schottky diodes, in conjunction with the start of the Power Conversion and Intelligent Motion (PCIM) Europe 2017 Exhibition.

These SiC diodes are the first in a series of products based on the technology platform created through a partnership with Monolith Semiconductor. Additional SiC products based on the technology platform, including 1200V SiC MOSFETs, are in the pipeline and scheduled for introduction soon.

“The merged p-n Schottky (MPS) device architecture of these new SiC Schottky diodes offers circuit designers enhanced surge capability and extremely low leakage,” said Michael Ketterer, product marketing manager, Power Semiconductors at Littelfuse. “Compared to conventional silicon power diodes, these SiC Schottky diodes boost converter efficiency and power density while helping to reduce system-level costs.”

GEN2 SiC Schottky diodes are available in ratings of 1200V at currents from 5 A to 10 A in either TO-220-2L or TO-252-2L packages. Compared to standard silicon bipolar power diodes, they allow circuit designers to dramatically reduce switching losses and enable substantial increases in the efficiency and robustness of power electronics systems.

They can accommodate large surge currents without thermal runaway, and operate at higher junction temperatures than their silicon counterparts. They also offer best-in-class stored capacitive charge and forward voltage drop.

Typical applications the diodes include power factor correction (PFC), buck/boost stages in DC-DC converters, free-wheeling diodes in inverter stages (switch-mode power supplies, solar, UPS, industrial drives) and high-frequency output rectification - wherever improvements in efficiency, reliability, and thermal management are desired. 

Designers and manufacturers of industrial power supplies, solar inverters, industrial drives, welding and plasma cutting equipment and EV/HEV charging stations will find them particularly useful, says Littelfuse.

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